Final California 2020 Integrated Report (303(d) List/305(b) Report)

Supporting Information

Regional Board 3 - Central Coast Region

Water Body Name: Carneros Creek (Monterey County)
Water Body ID: CAR3060001020090115165216
Water Body Type: River & Stream
 
DECISION ID
130175
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Fecal Coliform
Final Listing Decision: Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not Delist from 303(d) list (TMDL required list)(2018)
Revision Status Revised
Reason for Delisting: Applicable WQS attained; due to change in WQS
Expected TMDL Completion Date: 2027
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: This pollutant is being considered for removal from the CWA section 303(d) List under section 4 of the Listing Policy due to a change in water quality standards.

The State Water Boards Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California (the ISWEBE Plan) contains two bacteria water quality objectives applicable to the REC-1 beneficial use which were adopted on August 7, 2018: where the salinity level of a waterbody is equal to or less than 1 part per thousand 95 percent or more of the time, the E. coli bacteria objective applies; and where the salinity level of a waterbody is greater than 1 part per thousand 95 percent or more of the time, the Enterococci bacteria objective applies.

These objectives supersede the fecal coliform water quality objective for water contact recreation. Consequently, the fecal coliform objective for water contact recreation is no longer applicable to this waterbody and those LOEs have been removed from this decision. Therefore, this waterbody is being removed from the CWA section 303(d) List under section 4 of the Listing Policy due to a change in water quality standards.

However, three lines of evidence (LOEs) are available in the administrative record to assess this pollutant and the non-contact recreation use. Therefore, this pollutant is being considered for placement on the CWA section 303(d) List under section 3.3 of the Listing Policy. Under section 3.3 a single line of evidence is necessary to assess listing status.

Six of the 38 samples exceed the water quality objective for non-contact recreation.

After review of the available data and information for the non-contact recreation beneficial use, RWQCB staff concludes that the water body-pollutant combination should not be placed on the CWA section 303(d) List because applicable water quality standards for the pollutant are not being exceeded.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. Six of the 38 samples exceed the water quality objective for non-contact recreation, and this does not exceed the allowable frequency listed in Table 3.2 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be removed from the CWA section 303(d) List under section 4 of the Listing Policy due to a change in water quality standards.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 130175, Fecal Coliform
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26662
 
Pollutant: Fecal Coliform
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Non-Contact Recreation
 
Number of Samples: 18
Number of Exceedances: 5
 
Data and Information Type: PATHOGEN MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed CCAMP Salinas (Salinas) data for Carneros Creek to determine beneficial use support and results are as follows: 5 of 18 samples exceed the criterion for Coliform, Fecal.
Data Reference: Final Data File used for assessment: CCAMP Salinas Toxicity data
  Final Data File used for assessment: CCAMP Water Quality Data_file1
  Final Data File used for assessment: CCAMP Water Quality Data_file2
  Final Data File used for assessment: CCAMP Water Quality Data_file3
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: Fecal coliform concentration, based on a minimum of not less than five samples for any 30-day period, shall not exceed a log mean of 2000/100 ml, nor shall more than ten percent of samples collected during any 30-day period exceed 4000/100 ml.
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road].
Temporal Representation: Data was collected over the time period 4/26/1999-12/18/2006. Salinas watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 130175, Fecal Coliform
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 49753
 
Pollutant: Fecal Coliform
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Non-Contact Recreation
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PATHOGEN MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Coliform, Fecal.
Data Reference: Salinas Rotation field data 2007
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: Fecal coliform concentration, based on a minimum of not less than five samples for any 30-day period, shall not exceed a log mean of 2000/100 ml, nor shall more than ten percent of samples collected during any 30-day period exceed 4000/100 ml.
Objective/Criterion Reference: Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 1/16/2007-2/20/2007.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate.
QAPP Information Reference(s): Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
 
Line of Evidence (LOE) for Decision ID 130175, Fecal Coliform
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 150072
 
Pollutant: Fecal Coliform
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Non-Contact Recreation
 
Number of Samples: 18
Number of Exceedances: 1
 
Data and Information Type: PATHOGEN MONITORING
Data Used to Assess Water Quality: Water Board staff assessed data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 1 of the 18 samples exceeded the water quality threshold for Coliform, Fecal. The water quality threshold is based on a 10% exceedance rate that is calculated for a 30-Day peroid.
Data Reference: Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section 3.3.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states the following: Fecal coliform concentration, based on a minimum of not less than five samples for any 30-day period, shall not exceed a log mean of 2000/100 mL, nor shall more than ten percent of samples collected during any 30-day period exceed 4000/100 mL.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site(s), station(s): 306CAR
Temporal Representation: The samples were collected between the days of 2012-01-11 and 2018-11-06 .
Environmental Conditions:
QAPP Information: SWAMP 2008, SWAMP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
 
DECISION ID
126618
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Ammonia
Final Listing Decision: Do Not Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not Delist from 303(d) list (TMDL required list)(2018)
Revision Status Revised
Sources: No Source Analysis Available
Expected TMDL Completion Date: 2025
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: This pollutant is being considered for removal from the CWA section 303(d) List under section 4.1 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status.

Fifty-four lines of evidence (LOEs) are available in the administrative record to assess this pollutant.
Sample and exceedance counts for the lines of evidence with the fraction identified as “none” or "dissolved" are grouped together with those having the fraction “total”, based on the analytical method used. The following is a summary of the sample and exceedances for each beneficial use:

Based on LOEs summarizing un-ionized ammonia data, eight of the 76 samples exceed the water quality objective (Basin Plan) set to protect aquatic life. Note - sample and exceedance counts for the lines of evidence (LOEs) summarizing data for both the Cold and Warm Beneficial Use should be the same, since the water quality objective criteria used to assess these data are identical.

Based on LOEs summarizing total ammonia data (‘nitrogen, ammonia’ and ‘nitrogen as ammonia’) two of the 42 samples exceed the EPA's Aquatic Life Ambient Water Quality Criteria set to protect aquatic life.

Based on LOEs summarizing total ammonia data (‘nitrogen, ammonia’ and ‘nitrogen as ammonia’) zero of the 3636 samples exceed the EPA's Lifetime Health advisory level set to protect municipal and domestic supply uses.

Based on the readily available data and information, the weight of evidence indicates that the water body-pollutant combination should not be removed from the section 303(d) List because applicable water quality standards for the pollutant are being exceeded.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. Eight samples exceed the water quality objectives and this exceeds the allowable frequency listed in Table 4.1 of the Listing Policy.
4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) List because applicable water quality standards for the pollutant are being exceeded.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 184061
 
Pollutant: Nitrogen, ammonia (Total Ammonia)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 9
Number of Exceedances: 2
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB3 CCAMP Salinas Rotation data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 2 of the 9 samples exceeded the water quality threshold for Ammonia as N. Although a total of 10 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: The Total Ammonia criterion continuous concentration (expressed as a 30-day average) to protect aquatic life in freshwater is Temperature and pH dependent, and was calculated according to the formula listed in the Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013 document.
Objective/Criterion Reference: Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306CAR).
Temporal Representation: Data for this waterbody was collected over the date range 2012-06-26 to 2018-11-06
Environmental Conditions:
QAPP Information: SWAMP 2008, SWAMP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 49755
 
Pollutant: Ammonia (Unionized)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Ammonia as N, Unionized.
Data Reference: Salinas Rotation field data 2007
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan, Central Coast Basin General Objective, Chapter III, Section II.A.2 (General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/l (as N) in receiving waters (page III-4).
Objective/Criterion Reference: Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 1/16/2007-2/20/2007.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate.
QAPP Information Reference(s): Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 49726
 
Pollutant: Ammonia (Unionized)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Ammonia as N, Unionized.
Data Reference: Salinas Rotation field data 2007
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan, Central Coast Basin General Objective, Chapter III, Section II.A.2 (General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/l (as N) in receiving waters (page III-4) .
Objective/Criterion Reference: Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 1/16/2007-2/20/2007.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate.
QAPP Information Reference(s): Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 219449
 
Pollutant: Ammonia (Unionized)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 15
Number of Exceedances: 5
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB3 CCAMP Salinas Rotation data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 5 of the 15 samples exceeded the water quality threshold for Ammonia as N, Unionized. Although a total of 18 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan, Central Coast Basin General Objective, Chapter 3, Section 3.3.2 (Objectives for all Inland Surface Waters, Enclosed Bays, and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/L (as N) in receiving waters (page 32).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306CAR).
Temporal Representation: Data for this waterbody was collected over the date range 2012-01-11 to 2018-11-06
Environmental Conditions:
QAPP Information: SWAMP 2008, SWAMP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 219289
 
Pollutant: Ammonia (Unionized)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Ammonia as N, Unionized.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan, Central Coast Basin General Objective, Chapter 3, Section 3.3.2 (Objectives for all Inland Surface Waters, Enclosed Bays, and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/L (as N) in receiving waters (page 32).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2012-12-27 and 2013-03-06
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26680
 
Pollutant: Ammonia as Nitrogen
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 165
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed National Estuarine Research Reserve Monitoring Program (R3_ESNERR) data for Carneros Creek to determine beneficial use support and results are as follows: 0 of 165 samples exceed the criterion for Ammonia As N,
Data Reference: Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Field Data from 2006
  Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Water Quality Data from 2006
  Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Water Quality Data from 94-04
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: USEPA Health Advisory 2006 Edition of the Drinking Water Standards and Health Advisories (EPA 822-R-06-013, 2006).
Objective/Criterion Reference: 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013
 
Evaluation Guideline: EPA's Lifetime Health advisory level for total ammonia is 30.0 mg/L as stated on page 8 of the 2006 edition of the drinking water standards and health advisories. This Advisory Level is defined as "the concentration of a chemical in drinking water that is not expected to cause any adverse noncarcinogenic effects for up to ten days of exposure."
Guideline Reference: Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001.
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CARBLR - Carneros Creek]
Temporal Representation: Data was collected over the time period 1/20/1990-12/4/2006.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: QAPP was adopted for work conducted since 2005. Prior to 2005 no QAPP was in place and data entry was completed by volunteers. Multiple errors were identified in data and were flagged by RB staff (in communication with Elkhorn Slough Program staff) prior
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 49735
 
Pollutant: Ammonia as Nitrogen
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Ammonia As N, Total.
Data Reference: Salinas Rotation field data 2007
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Basin Plan).
Objective/Criterion Reference: Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.
 
Evaluation Guideline: EPA's Lifetime Health advisory level for total ammonia is 30.0 mg/L as stated on page 8 of the 2006 edition of the drinking water standards and health advisories. This Advisory Level is defined as "the concentration of a chemical in drinking water that is not expected to cause any adverse noncarcinogenic effects for up to ten days of exposure."
Guideline Reference: 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 1/16/2007-2/20/2007.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate.
QAPP Information Reference(s): Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26698
 
Pollutant: Ammonia as Nitrogen
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3352
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for Carneros Creek to determine beneficial use support and results are as follows: 0 of 3352 samples exceed the criterion for Ammonia As N, Total.
Data Reference: Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A
  Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: USEPA Health Advisory 2006 Edition of the Drinking Water Standards and Health Advisories (EPA 822-R-06-013, 2006).
Objective/Criterion Reference: 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013
 
Evaluation Guideline: EPA's Lifetime Health advisory level for total ammonia is 30.0 mg/L as stated on page 8 of the 2006 edition of the drinking water standards and health advisories. This Advisory Level is defined as "the concentration of a chemical in drinking water that is not expected to cause any adverse noncarcinogenic effects for up to ten days of exposure."
Guideline Reference: 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 9 monitoring sites [ CA-SMC - Carneros Creek at San Miguel Canyon Rd., CA-COR - Carneros Creek at Corey Rd., CA-KIR - Carneros Creek at Kirby Park, CA-BIR - Carneros Creek at Bend in road,
Temporal Representation: Data was collected over the time period 10/4/2000-3/20/2007.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26660
 
Pollutant: Ammonia as Nitrogen
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 21
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed CCAMP Salinas (Salinas) data for Carneros Creek to determine beneficial use support and results are as follows: 0 of 21 samples exceed the criterion for Ammonia as N, Total.
Data Reference: Final Data File used for assessment: CCAMP Salinas Toxicity data
  Final Data File used for assessment: CCAMP Water Quality Data_file1
  Final Data File used for assessment: CCAMP Water Quality Data_file2
  Final Data File used for assessment: CCAMP Water Quality Data_file3
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: USEPA Health Advisory 2006 Edition of the Drinking Water Standards and Health Advisories (EPA 822-R-06-013, 2006).
Objective/Criterion Reference: 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013
 
Evaluation Guideline: EPA's Lifetime Health advisory level for total ammonia is 30.0 mg/L as stated on page 8 of the 2006 edition of the drinking water standards and health advisories. This Advisory Level is defined as "the concentration of a chemical in drinking water that is not expected to cause any adverse noncarcinogenic effects for up to ten days of exposure."
Guideline Reference: 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road].
Temporal Representation: Data was collected over the time period 3/29/1999-12/18/2006. Salinas watershed area is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 52918
 
Pollutant: Ammonia as Nitrogen
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 32
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 32 samples exceed the criterion for Ammonia As N, Total.
Data Reference: Data from Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program, Jan. 2007-Jul. 2009
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Basin Plan).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: EPA's Lifetime Health advisory level for total ammonia is 30.0 mg/L as stated on page 8 of the 2006 edition of the drinking water standards and health advisories. This Advisory Level is defined as "the concentration of a chemical in drinking water that is not expected to cause any adverse noncarcinogenic effects for up to ten days of exposure."
Guideline Reference: 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CARBLR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 1/8/2007-7/7/2009.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: Data was collected following the Quality Assurance Project Plan for Elkhorn Slough National Estuarine Research Reserve's Volunteer Monthly Water Quality Program. Replicate data were identified in data and were qualified by RB Central Coast Water Board S
QAPP Information Reference(s): Quality Assurance Project Plan, Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program. May 15, 2009, Ver.1.3
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26659
 
Pollutant: Ammonia (Unionized)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 9
Number of Exceedances: 2
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed CCAMP Salinas (Salinas) data for Carneros Creek to determine beneficial use support and results are as follows: 2 of 9 samples exceed the criterion for Ammonia as N, Unionized.
Data Reference: Final Data File used for assessment: CCAMP Salinas Toxicity data
  Final Data File used for assessment: CCAMP Water Quality Data_file1
  Final Data File used for assessment: CCAMP Water Quality Data_file2
  Final Data File used for assessment: CCAMP Water Quality Data_file3
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan, Central Coast Basin General Objective, Chapter III, Section II.A.2 (General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/l (as N) in receiving waters (page III-4) .
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road].
Temporal Representation: Data was collected over the time period 1/23/2006-12/18/2006. Salinas watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 184093
 
Pollutant: Nitrogen, ammonia (Total Ammonia)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Ammonia as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: EPA's Lifetime Health advisory level for total ammonia is 30.0 mg/L as stated on page 8 of the 2012 edition of the drinking water standards and health advisories. This Advisory Level is defined as 'the concentration of a chemical in drinking water that is not expected to cause any adverse noncarcinogenic effects for a lifetime of exposure.'
Guideline Reference: 2018 Edition of the Drinking Water Standards and Health Advisories
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2012-12-27 and 2013-03-06
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 184164
 
Pollutant: Nitrogen, ammonia (Total Ammonia)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 8
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 8 samples exceeded the water quality threshold for Ammonia as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: EPA's Lifetime Health advisory level for total ammonia is 30.0 mg/L as stated on page 8 of the 2012 edition of the drinking water standards and health advisories. This Advisory Level is defined as 'the concentration of a chemical in drinking water that is not expected to cause any adverse noncarcinogenic effects for a lifetime of exposure.'
Guideline Reference: 2018 Edition of the Drinking Water Standards and Health Advisories
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-01-28 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 184368
 
Pollutant: Nitrogen, ammonia (Total Ammonia)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 9
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 9 samples exceeded the water quality threshold for Ammonia as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: EPA's Lifetime Health advisory level for total ammonia is 30.0 mg/L as stated on page 8 of the 2012 edition of the drinking water standards and health advisories. This Advisory Level is defined as 'the concentration of a chemical in drinking water that is not expected to cause any adverse noncarcinogenic effects for a lifetime of exposure.'
Guideline Reference: 2018 Edition of the Drinking Water Standards and Health Advisories
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 184387
 
Pollutant: Nitrogen, ammonia (Total Ammonia)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 7
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 7 samples exceeded the water quality threshold for Ammonia as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: EPA's Lifetime Health advisory level for total ammonia is 30.0 mg/L as stated on page 8 of the 2012 edition of the drinking water standards and health advisories. This Advisory Level is defined as 'the concentration of a chemical in drinking water that is not expected to cause any adverse noncarcinogenic effects for a lifetime of exposure.'
Guideline Reference: 2018 Edition of the Drinking Water Standards and Health Advisories
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 184122
 
Pollutant: Nitrogen, ammonia (Total Ammonia)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 9
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 9 samples exceeded the water quality threshold for Ammonia as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: EPA's Lifetime Health advisory level for total ammonia is 30.0 mg/L as stated on page 8 of the 2012 edition of the drinking water standards and health advisories. This Advisory Level is defined as 'the concentration of a chemical in drinking water that is not expected to cause any adverse noncarcinogenic effects for a lifetime of exposure.'
Guideline Reference: 2018 Edition of the Drinking Water Standards and Health Advisories
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 184224
 
Pollutant: Nitrogen, ammonia (Total Ammonia)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 20
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB3 CCAMP Salinas Rotation data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 20 samples exceeded the water quality threshold for Ammonia as N.
Data Reference: Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: EPA's Lifetime Health advisory level for total ammonia is 30.0 mg/L as stated on page 8 of the 2012 edition of the drinking water standards and health advisories. This Advisory Level is defined as 'the concentration of a chemical in drinking water that is not expected to cause any adverse noncarcinogenic effects for a lifetime of exposure.'
Guideline Reference: 2018 Edition of the Drinking Water Standards and Health Advisories
 
Spatial Representation: The samples were collected at 1 monitoring site (306CAR)
Temporal Representation: The samples were collected between the dates of 2012-01-11 and 2018-12-11
Environmental Conditions:
QAPP Information: SWAMP 2008, SWAMP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 183737
 
Pollutant: Nitrogen, ammonia (Total Ammonia)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 5 samples exceeded the water quality threshold for Ammonia as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Total Ammonia criterion continuous concentration (expressed as a 30-day average) to protect aquatic life in freshwater is Temperature and pH dependent, and was calculated according to the formula listed in the Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013 document.
Objective/Criterion Reference: Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 184057
 
Pollutant: Nitrogen, ammonia (Total Ammonia)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 6
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 6 samples exceeded the water quality threshold for Ammonia as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Total Ammonia criterion continuous concentration (expressed as a 30-day average) to protect aquatic life in freshwater is Temperature and pH dependent, and was calculated according to the formula listed in the Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013 document.
Objective/Criterion Reference: Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 184059
 
Pollutant: Nitrogen, ammonia (Total Ammonia)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 6
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 6 samples exceeded the water quality threshold for Ammonia as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Total Ammonia criterion continuous concentration (expressed as a 30-day average) to protect aquatic life in freshwater is Temperature and pH dependent, and was calculated according to the formula listed in the Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013 document.
Objective/Criterion Reference: Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 219256
 
Pollutant: Ammonia (Unionized)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 5 samples exceeded the water quality threshold for Ammonia as N, Unionized.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan, Central Coast Basin General Objective, Chapter 3, Section 3.3.2 (Objectives for all Inland Surface Waters, Enclosed Bays, and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/L (as N) in receiving waters (page 32).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2012-12-27 and 2013-03-13
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 219521
 
Pollutant: Ammonia (Unionized)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 7
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 7 samples exceeded the water quality threshold for Ammonia as N, Unionized.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan, Central Coast Basin General Objective, Chapter 3, Section 3.3.2 (Objectives for all Inland Surface Waters, Enclosed Bays, and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/L (as N) in receiving waters (page 32).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 219554
 
Pollutant: Ammonia (Unionized)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 9
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 9 samples exceeded the water quality threshold for Ammonia as N, Unionized.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan, Central Coast Basin General Objective, Chapter 3, Section 3.3.2 (Objectives for all Inland Surface Waters, Enclosed Bays, and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/L (as N) in receiving waters (page 32).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 219411
 
Pollutant: Ammonia (Unionized)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 5 samples exceeded the water quality threshold for Ammonia as N, Unionized.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan, Central Coast Basin General Objective, Chapter 3, Section 3.3.2 (Objectives for all Inland Surface Waters, Enclosed Bays, and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/L (as N) in receiving waters (page 32).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2012-12-27 and 2013-03-13
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 219409
 
Pollutant: Ammonia (Unionized)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 8
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 8 samples exceeded the water quality threshold for Ammonia as N, Unionized.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan, Central Coast Basin General Objective, Chapter 3, Section 3.3.2 (Objectives for all Inland Surface Waters, Enclosed Bays, and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/L (as N) in receiving waters (page 32).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-01-28 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 219641
 
Pollutant: Ammonia (Unionized)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 9
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 9 samples exceeded the water quality threshold for Ammonia as N, Unionized.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan, Central Coast Basin General Objective, Chapter 3, Section 3.3.2 (Objectives for all Inland Surface Waters, Enclosed Bays, and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/L (as N) in receiving waters (page 32).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 219323
 
Pollutant: Ammonia (Unionized)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 5 samples exceeded the water quality threshold for Ammonia as N, Unionized.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan, Central Coast Basin General Objective, Chapter 3, Section 3.3.2 (Objectives for all Inland Surface Waters, Enclosed Bays, and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/L (as N) in receiving waters (page 32).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2012-12-27 and 2013-03-13
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 219541
 
Pollutant: Ammonia (Unionized)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 9
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 9 samples exceeded the water quality threshold for Ammonia as N, Unionized.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan, Central Coast Basin General Objective, Chapter 3, Section 3.3.2 (Objectives for all Inland Surface Waters, Enclosed Bays, and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/L (as N) in receiving waters (page 32).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 219587
 
Pollutant: Ammonia (Unionized)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 9
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 9 samples exceeded the water quality threshold for Ammonia as N, Unionized.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan, Central Coast Basin General Objective, Chapter 3, Section 3.3.2 (Objectives for all Inland Surface Waters, Enclosed Bays, and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/L (as N) in receiving waters (page 32).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26650
 
Pollutant: Ammonia (Unionized)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 9
Number of Exceedances: 3
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Three out of 9 samples exceeded the general water quality objective (CCAMP, 2004; SWAMP, 2004).
Data Reference: Placeholder reference 2006 303(d)
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: The discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/L (as N) in receiving waters (Region 3 Basin Plan, Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a. General Objectives, page III-4)
Objective/Criterion Reference: Placeholder reference 2006 303(d)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were collected from one site.
Temporal Representation: Samples were collected from March 1999 to March 2000.
Environmental Conditions: Water body is located in the Bolsa Nueva hydrologic unit. The site is Carneros Creek in Los Lomas at Blohm Road (306CAR).
QAPP Information: CCAMP, SWAMP QAPP.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 184115
 
Pollutant: Nitrogen, ammonia (Total Ammonia)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 5 samples exceeded the water quality threshold for Ammonia as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Total Ammonia criterion continuous concentration (expressed as a 30-day average) to protect aquatic life in freshwater is Temperature and pH dependent, and was calculated according to the formula listed in the Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013 document.
Objective/Criterion Reference: Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 183736
 
Pollutant: Nitrogen, ammonia (Total Ammonia)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Ammonia as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Total Ammonia criterion continuous concentration (expressed as a 30-day average) to protect aquatic life in freshwater is Temperature and pH dependent, and was calculated according to the formula listed in the Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013 document.
Objective/Criterion Reference: Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2013-01-15 and 2013-03-13
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 184364
 
Pollutant: Nitrogen, ammonia (Total Ammonia)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Ammonia as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Total Ammonia criterion continuous concentration (expressed as a 30-day average) to protect aquatic life in freshwater is Temperature and pH dependent, and was calculated according to the formula listed in the Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013 document.
Objective/Criterion Reference: Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2012-12-27 and 2013-03-06
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 184096
 
Pollutant: Nitrogen, ammonia (Total Ammonia)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Ammonia as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Total Ammonia criterion continuous concentration (expressed as a 30-day average) to protect aquatic life in freshwater is Temperature and pH dependent, and was calculated according to the formula listed in the Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013 document.
Objective/Criterion Reference: Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2013-01-15 and 2013-03-13
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 184113
 
Pollutant: Nitrogen, ammonia (Total Ammonia)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Ammonia as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Total Ammonia criterion continuous concentration (expressed as a 30-day average) to protect aquatic life in freshwater is Temperature and pH dependent, and was calculated according to the formula listed in the Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013 document.
Objective/Criterion Reference: Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2013-01-15 and 2013-03-13
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 183934
 
Pollutant: Nitrogen, ammonia (Total Ammonia)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Ammonia as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Total Ammonia criterion continuous concentration (expressed as a 30-day average) to protect aquatic life in freshwater is Temperature and pH dependent, and was calculated according to the formula listed in the Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013 document.
Objective/Criterion Reference: Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2013-01-15 and 2013-03-13
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 184070
 
Pollutant: Nitrogen, ammonia (Total Ammonia)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Ammonia as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Total Ammonia criterion continuous concentration (expressed as a 30-day average) to protect aquatic life in freshwater is Temperature and pH dependent, and was calculated according to the formula listed in the Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013 document.
Objective/Criterion Reference: Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2012-12-27 and 2013-03-06
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 184071
 
Pollutant: Nitrogen, ammonia (Total Ammonia)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Ammonia as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Total Ammonia criterion continuous concentration (expressed as a 30-day average) to protect aquatic life in freshwater is Temperature and pH dependent, and was calculated according to the formula listed in the Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013 document.
Objective/Criterion Reference: Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2013-01-15 and 2013-03-13
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 183896
 
Pollutant: Nitrogen, ammonia (Total Ammonia)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Ammonia as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Total Ammonia criterion continuous concentration (expressed as a 30-day average) to protect aquatic life in freshwater is Temperature and pH dependent, and was calculated according to the formula listed in the Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013 document.
Objective/Criterion Reference: Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2013-01-15 and 2013-03-13
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 184330
 
Pollutant: Nitrogen, ammonia (Total Ammonia)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 5 samples exceeded the water quality threshold for Ammonia as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Total Ammonia criterion continuous concentration (expressed as a 30-day average) to protect aquatic life in freshwater is Temperature and pH dependent, and was calculated according to the formula listed in the Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013 document.
Objective/Criterion Reference: Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 184141
 
Pollutant: Nitrogen, ammonia (Total Ammonia)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 6
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 6 samples exceeded the water quality threshold for Ammonia as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Total Ammonia criterion continuous concentration (expressed as a 30-day average) to protect aquatic life in freshwater is Temperature and pH dependent, and was calculated according to the formula listed in the Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013 document.
Objective/Criterion Reference: Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 184242
 
Pollutant: Nitrogen, ammonia (Total Ammonia)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 5 samples exceeded the water quality threshold for Ammonia as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Total Ammonia criterion continuous concentration (expressed as a 30-day average) to protect aquatic life in freshwater is Temperature and pH dependent, and was calculated according to the formula listed in the Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013 document.
Objective/Criterion Reference: Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 184261
 
Pollutant: Nitrogen, ammonia (Total Ammonia)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 9
Number of Exceedances: 2
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB3 CCAMP Salinas Rotation data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 2 of the 9 samples exceeded the water quality threshold for Ammonia as N. Although a total of 10 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: The Total Ammonia criterion continuous concentration (expressed as a 30-day average) to protect aquatic life in freshwater is Temperature and pH dependent, and was calculated according to the formula listed in the Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013 document.
Objective/Criterion Reference: Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306CAR).
Temporal Representation: Data for this waterbody was collected over the date range 2012-06-26 to 2018-11-06
Environmental Conditions:
QAPP Information: SWAMP 2008, SWAMP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 183892
 
Pollutant: Nitrogen, ammonia (Total Ammonia)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 6
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 6 samples exceeded the water quality threshold for Ammonia as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Total Ammonia criterion continuous concentration (expressed as a 30-day average) to protect aquatic life in freshwater is Temperature and pH dependent, and was calculated according to the formula listed in the Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013 document.
Objective/Criterion Reference: Aquatic Life Ambient Water Quality Criteria for Ammonia - Freshwater 2013
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 184361
 
Pollutant: Nitrogen, ammonia (Total Ammonia)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 5 samples exceeded the water quality threshold for Ammonia as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: EPA's Lifetime Health advisory level for total ammonia is 30.0 mg/L as stated on page 8 of the 2012 edition of the drinking water standards and health advisories. This Advisory Level is defined as 'the concentration of a chemical in drinking water that is not expected to cause any adverse noncarcinogenic effects for a lifetime of exposure.'
Guideline Reference: 2018 Edition of the Drinking Water Standards and Health Advisories
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2012-12-27 and 2013-03-13
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 184077
 
Pollutant: Nitrogen, ammonia (Total Ammonia)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 5 samples exceeded the water quality threshold for Ammonia as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: EPA's Lifetime Health advisory level for total ammonia is 30.0 mg/L as stated on page 8 of the 2012 edition of the drinking water standards and health advisories. This Advisory Level is defined as 'the concentration of a chemical in drinking water that is not expected to cause any adverse noncarcinogenic effects for a lifetime of exposure.'
Guideline Reference: 2018 Edition of the Drinking Water Standards and Health Advisories
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2012-12-27 and 2013-03-13
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 184178
 
Pollutant: Nitrogen, ammonia (Total Ammonia)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 5 samples exceeded the water quality threshold for Ammonia as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: EPA's Lifetime Health advisory level for total ammonia is 30.0 mg/L as stated on page 8 of the 2012 edition of the drinking water standards and health advisories. This Advisory Level is defined as 'the concentration of a chemical in drinking water that is not expected to cause any adverse noncarcinogenic effects for a lifetime of exposure.'
Guideline Reference: 2018 Edition of the Drinking Water Standards and Health Advisories
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2012-12-27 and 2013-03-13
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 219321
 
Pollutant: Ammonia (Unionized)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 5 samples exceeded the water quality threshold for Ammonia as N, Unionized.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan, Central Coast Basin General Objective, Chapter 3, Section 3.3.2 (Objectives for all Inland Surface Waters, Enclosed Bays, and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/L (as N) in receiving waters (page 32).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2012-12-27 and 2013-03-13
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 219561
 
Pollutant: Ammonia (Unionized)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 8
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 8 samples exceeded the water quality threshold for Ammonia as N, Unionized.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan, Central Coast Basin General Objective, Chapter 3, Section 3.3.2 (Objectives for all Inland Surface Waters, Enclosed Bays, and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/L (as N) in receiving waters (page 32).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-01-28 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 219622
 
Pollutant: Ammonia (Unionized)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 15
Number of Exceedances: 5
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB3 CCAMP Salinas Rotation data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 5 of the 15 samples exceeded the water quality threshold for Ammonia as N, Unionized. Although a total of 18 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan, Central Coast Basin General Objective, Chapter 3, Section 3.3.2 (Objectives for all Inland Surface Waters, Enclosed Bays, and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/L (as N) in receiving waters (page 32).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306CAR).
Temporal Representation: Data for this waterbody was collected over the date range 2012-01-11 to 2018-11-06
Environmental Conditions:
QAPP Information: SWAMP 2008, SWAMP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 219325
 
Pollutant: Ammonia (Unionized)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 5 samples exceeded the water quality threshold for Ammonia as N, Unionized.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan, Central Coast Basin General Objective, Chapter 3, Section 3.3.2 (Objectives for all Inland Surface Waters, Enclosed Bays, and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/L (as N) in receiving waters (page 32).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2012-12-27 and 2013-03-13
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 219295
 
Pollutant: Ammonia (Unionized)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 5 samples exceeded the water quality threshold for Ammonia as N, Unionized.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan, Central Coast Basin General Objective, Chapter 3, Section 3.3.2 (Objectives for all Inland Surface Waters, Enclosed Bays, and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/L (as N) in receiving waters (page 32).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2012-12-27 and 2013-03-13
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 219531
 
Pollutant: Ammonia (Unionized)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Ammonia as N, Unionized.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan, Central Coast Basin General Objective, Chapter 3, Section 3.3.2 (Objectives for all Inland Surface Waters, Enclosed Bays, and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/L (as N) in receiving waters (page 32).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2012-12-27 and 2013-03-06
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126618, Ammonia
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 219342
 
Pollutant: Ammonia (Unionized)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 7
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 7 samples exceeded the water quality threshold for Ammonia as N, Unionized.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan, Central Coast Basin General Objective, Chapter 3, Section 3.3.2 (Objectives for all Inland Surface Waters, Enclosed Bays, and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/L (as N) in receiving waters (page 32).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
 
DECISION ID
125752
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Nitrate
Final Listing Decision: Do Not Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: List on 303(d) list (TMDL required list)(2018)
Revision Status Revised
Sources: No Source Analysis Available
Expected TMDL Completion Date: 2025
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: This pollutant is being considered for removal from the CWA section 303(d) List under sections 4.1 and 4.11 of the Listing Policy. Under section 4.1 of the Policy, a minimum of one line of evidence is needed to assess listing status. Under section 4.11, additional lines of evidence are necessary to support a listing decision.

Sixty-nine lines of evidence are available in the administrative record to assess this pollutant. Lines of evidence for the pollutant name Nitrate and for the pollutant name Nitrogen, Nitrate are combined (same pollutant). Where the fraction is none, not recorded, or total, staff assumed that the fraction is dissolved, based on the analytical method. In these cases, sample and exceedance counts are summed for the purpose of making this decision.

The Municipal and Domestic Supply beneficial use is fully supported. A total of 194 of the 3,643 nitrate samples and one of the 61 nitrate/nitrite samples exceed this water quality objective.

The Aquatic Life beneficial uses are not supported. Since the 2010 Integrated Report assessment cycle, Central Coast Water Board staff assessed nitrate data using an evaluation guideline (Central Coast Region Technical Report, 2010) used to interpret the narrative water quality objective for biostimulatory substances, set to protect Cold and Warm Freshwater Habitat beneficial uses. A total of 16 of the 53 nitrate samples and 30 of the 73 nitrate/nitrite samples exceed this evaluation guideline. In addition, and in accordance with section 4.11 of the Listing Policy, the following evidence supports the conclusion that nitrate contributes to or causes a bio-stimulatory response in this waterbody.

1. Dissolved oxygen for this water body ranged from 0.71 mg/L to 14.49 mg/L, often exceeding (falling below) the Cold Freshwater Habitat water quality objective of 7.0 mg/L and at times exceeds the upper dissolved oxygen screening of 13.0 mg/L (R3 NNE Technical Report, 2010). This water body is on the 303(d) List for dissolved oxygen.
2. Water column chlorophyll a concentration ranged from 1.0 to 970 ug/L, frequently exceeding the screening threshold of 15 ug/L (R3 NNE Technical Report, 2010).
3. Using site-specific data from this waterbody, the California Benthic Biomass Predictor Tool, v. 13 (Tetratech, 2007) predicted a benthic algal contribution to oxygen deficit for this water body of 1.68 mg/L. This exceeds the screening threshold for benthic algal contribution to oxygen deficit of 1.25 mg/L (R3 NNE Technical Report, 2010).

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the CWA section 303(d) List.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. A total of 16 of the 53 nitrate samples and 30 of the 73 nitrate/nitrite samples exceed the evaluation guideline (Central Coast Region Technical Report, 2010) for Cold and Warm Freshwater Habitat. These exceed the allowable frequency listed in Table 4.1 of the Listing Policy and in accordance with section 4.11 of the Listing Policy, there is sufficient supporting evidence to support the conclusion that nitrate causes or contributes to eutrophic conditions in the water body segment.
4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded.
 
State Board Review of Regional Board Conclusion and Recommendation: This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. A total of 16 of the 53 nitrate samples and 30 of the 73 nitrate/nitrite samples exceed the evaluation guideline (Central Coast Region Technical Report, 2010) for Cold and Warm Freshwater Habitat. These exceed the allowable frequency listed in Table 4.1 of the Listing Policy and in accordance with section 4.11 of the Listing Policy, there is sufficient supporting evidence to support the conclusion that nitrate causes or contributes to eutrophic conditions in the water body segment.
4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met.
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 171529
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 2 samples exceeded the water quality threshold for Nitrate + Nitrite as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2014-12-12 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 171963
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 12
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 12 samples exceeded the water quality threshold for Nitrate + Nitrite as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All inland surface waters, enclosed bays, and estuaries shall not contain concentrations of inorganic chemicals in excess of the maximum contaminant levels for primary drinking water standards specified in California Code of Regulations, Title 22, Division 4, Chapter 15, Sections 64431 and 64433.2.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The California Maximum Contaminant Level for nitrate + nitrite (as N) is 10. mg/L (California Code of Regulations, Title 22).
Guideline Reference: California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2013-03-13
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 172096
 
Pollutant: Nitrogen, Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 2 samples exceeded the water quality threshold for Nitrate as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2014-12-12 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 173237
 
Pollutant: Nitrogen, Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed MBNMS Snapshot Day data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 1 samples exceeded the water quality threshold for Nitrate as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-05-07 and 2011-05-07
Environmental Conditions:
QAPP Information: Monterey Bay NMS. 2003. California Coast Wide Snapshot Day 2003 Quality Assurance Project Plan (QAPP).
QAPP Information Reference(s): California Coast Wide Snapshot Day 2003 Quality Assurance Project Plan (QAPP)
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 172348
 
Pollutant: Nitrogen, Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 2 samples exceeded the water quality threshold for Nitrate as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2014-12-12 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 172543
 
Pollutant: Nitrogen, Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed MBNMS Snapshot Day data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Nitrate as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All inland surface waters, enclosed bays, and estuaries shall not contain concentrations of inorganic chemicals in excess of the maximum contaminant levels for primary drinking water standards specified in California Code of Regulations, Title 22, Division 4, Chapter 15, Sections 64431 and 64433.2.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The California Maximum Contaminant Level for nitrate (as N) 10.0 mg/L (California Code of Regulations, Title 22).
Guideline Reference: California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-05-07 and 2011-05-07
Environmental Conditions:
QAPP Information: Monterey Bay NMS. 2003. California Coast Wide Snapshot Day 2003 Quality Assurance Project Plan (QAPP).
QAPP Information Reference(s): California Coast Wide Snapshot Day 2003 Quality Assurance Project Plan (QAPP)
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 173107
 
Pollutant: Nitrogen, Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 2
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 2 of 2 samples exceeded the water quality threshold for Nitrate as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2014-12-12 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 172111
 
Pollutant: Nitrogen, Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 2 samples exceeded the water quality threshold for Nitrate as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2014-12-12 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 172094
 
Pollutant: Nitrogen, Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 2
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 2 of 2 samples exceeded the water quality threshold for Nitrate as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2014-12-12 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 172783
 
Pollutant: Nitrogen, Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Nitrate as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All inland surface waters, enclosed bays, and estuaries shall not contain concentrations of inorganic chemicals in excess of the maximum contaminant levels for primary drinking water standards specified in California Code of Regulations, Title 22, Division 4, Chapter 15, Sections 64431 and 64433.2.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The California Maximum Contaminant Level for nitrate (as N) 10.0 mg/L (California Code of Regulations, Title 22).
Guideline Reference: California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2014-12-12 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 172806
 
Pollutant: Nitrogen, Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Nitrate as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All inland surface waters, enclosed bays, and estuaries shall not contain concentrations of inorganic chemicals in excess of the maximum contaminant levels for primary drinking water standards specified in California Code of Regulations, Title 22, Division 4, Chapter 15, Sections 64431 and 64433.2.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The California Maximum Contaminant Level for nitrate (as N) 10.0 mg/L (California Code of Regulations, Title 22).
Guideline Reference: California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2014-12-12 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 173060
 
Pollutant: Nitrogen, Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Nitrate as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All inland surface waters, enclosed bays, and estuaries shall not contain concentrations of inorganic chemicals in excess of the maximum contaminant levels for primary drinking water standards specified in California Code of Regulations, Title 22, Division 4, Chapter 15, Sections 64431 and 64433.2.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The California Maximum Contaminant Level for nitrate (as N) 10.0 mg/L (California Code of Regulations, Title 22).
Guideline Reference: California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2014-12-12 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 172799
 
Pollutant: Nitrogen, Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed MBNMS Snapshot Day data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Nitrate as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All inland surface waters, enclosed bays, and estuaries shall not contain concentrations of inorganic chemicals in excess of the maximum contaminant levels for primary drinking water standards specified in California Code of Regulations, Title 22, Division 4, Chapter 15, Sections 64431 and 64433.2.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The California Maximum Contaminant Level for nitrate (as N) 10.0 mg/L (California Code of Regulations, Title 22).
Guideline Reference: California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-05-07 and 2012-05-05
Environmental Conditions:
QAPP Information: Monterey Bay NMS. 2003. California Coast Wide Snapshot Day 2003 Quality Assurance Project Plan (QAPP).
QAPP Information Reference(s): California Coast Wide Snapshot Day 2003 Quality Assurance Project Plan (QAPP)
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 173398
 
Pollutant: Nitrogen, Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed MBNMS Snapshot Day data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 1 samples exceeded the water quality threshold for Nitrate as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-05-07 and 2011-05-07
Environmental Conditions:
QAPP Information: Monterey Bay NMS. 2003. California Coast Wide Snapshot Day 2003 Quality Assurance Project Plan (QAPP).
QAPP Information Reference(s): California Coast Wide Snapshot Day 2003 Quality Assurance Project Plan (QAPP)
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 172364
 
Pollutant: Nitrogen, Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 2 samples exceeded the water quality threshold for Nitrate as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2014-12-12 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 172491
 
Pollutant: Nitrogen, Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed MBNMS Snapshot Day data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Nitrate as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-05-07 and 2012-05-05
Environmental Conditions:
QAPP Information: Monterey Bay NMS. 2003. California Coast Wide Snapshot Day 2003 Quality Assurance Project Plan (QAPP).
QAPP Information Reference(s): California Coast Wide Snapshot Day 2003 Quality Assurance Project Plan (QAPP)
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 52831
 
Pollutant: Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 29
Number of Exceedances: 4
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 4 of 29 samples exceed the criterion for Nitrate as N.
Data Reference: Data from Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program, Jan. 2007-Jul. 2009
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Basin Plan).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Staff Report Division of Water Quality Nutrient Screening Tools for Use in the Clean Water Act Section 303(d) Listing Process
Guideline Reference: Technical Approach to Develop Nutrient Numeric Endpoints for California. U.S. EPA Region IX. State Water Resources Control Board. 68-C-02-108-To-111
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CARBLR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 1/8/2007-7/7/2009.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: Data was collected following the Quality Assurance Project Plan for Elkhorn Slough National Estuarine Research Reserve's Volunteer Monthly Water Quality Program. Replicate data were identified in data and were qualified by RB Central Coast Water Board S
QAPP Information Reference(s): Quality Assurance Project Plan, Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program. May 15, 2009, Ver.1.3
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 49728
 
Pollutant: Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Nitrate as N.
Data Reference: Salinas Rotation field data 2007
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Basin Plan).
Objective/Criterion Reference: Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Technical Approach to Develop Nutrient Numeric Endpoints for California. U.S. EPA Region IX. State Water Resources Control Board. 68-C-02-108-To-111
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 1/16/2007-2/20/2007.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate.
QAPP Information Reference(s): Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26701
 
Pollutant: Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3371
Number of Exceedances: 189
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for Carneros Creek to determine beneficial use support and results are as follows: 189 of 3371 samples exceed the criterion for Nitrate as N.
Data Reference: Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A
  Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin Objective for municipal and domestic supply uses of inland surface waters (Section II.A.2) states the following: waters shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Article 4, Chapter 15, Section 64435, Tables 2 and 3 as listed in Table 3-2. The maximum contaminant level listed in Table 3-2 (inorganic and fluoride concentrations not to be exceeded in domestic or municipal supply) for nitrate is 10.0 mg/L (NO3 as N).
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
Objective/Criterion Reference: Title 22, Division 4, Ch. 15, Article 4, Section 64431, Table 64431-A
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 9 monitoring sites [ CA-SMC - Carneros Creek at San Miguel Canyon Rd., CA-COR - Carneros Creek at Corey Rd., CA-KIR - Carneros Creek at Kirby Park, CA-BIR - Carneros Creek at Bend in road,
Temporal Representation: Data was collected over the time period 10/4/2000-3/20/2007.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26702
 
Pollutant: Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for Carneros Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Nitrate as N.
Data Reference: Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin Objective for municipal and domestic supply uses of inland surface waters (Section II.A.2) states the following: waters shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Article 4, Chapter 15, Section 64435, Tables 2 and 3 as listed in Table 3-2. The maximum contaminant level listed in Table 3-2 (inorganic and fluoride concentrations not to be exceeded in domestic or municipal supply) for nitrate is 10.0 mg/L (NO3 as N).
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
Objective/Criterion Reference: Title 22, Division 4, Ch. 15, Article 4, Section 64431, Table 64431-A
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306-CARNE-1 - Carneros Creek]
Temporal Representation: Data was collected on a single day 5/1/2004. Coastal Watershed Council Snapshot Day Monitoring is conducted annually.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26681
 
Pollutant: Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 171
Number of Exceedances: 4
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed National Estuarine Research Reserve Monitoring Program (R3_ESNERR) data for Carneros Creek to determine beneficial use support and results are as follows: 4 of 171 samples exceed the criterion for Nitrate as N.
Data Reference: Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Field Data from 2006
  Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Water Quality Data from 2006
  Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Water Quality Data from 94-04
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin Objective for municipal and domestic supply uses of inland surface waters (Section II.A.2) states the following: waters shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Article 4, Chapter 15, Section 64435, Tables 2 and 3 as listed in Table 3-2. The maximum contaminant level listed in Table 3-2 (inorganic and fluoride concentrations not to be exceeded in domestic or municipal supply) for nitrate is 10.0 mg/L (NO3 as N).
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
Objective/Criterion Reference: Title 22, Division 4, Ch. 15, Article 4, Section 64431, Table 64431-A
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CARBLR - Carneros Creek]
Temporal Representation: Data was collected over the time period 1/20/1990-12/4/2006.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: QAPP was adopted for work conducted since 2005. Prior to 2005 no QAPP was in place and data entry was completed by volunteers. Multiple errors were identified in data and were flagged by RB staff (in communication with Elkhorn Slough Program staff) prior
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26654
 
Pollutant: Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 21
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed CCAMP Salinas (Salinas) data for Carneros Creek to determine beneficial use support and results are as follows: 0 of 21 samples exceed the criterion for Nitrate as N.
Data Reference: Final Data File used for assessment: CCAMP Salinas Toxicity data
  Final Data File used for assessment: CCAMP Water Quality Data_file1
  Final Data File used for assessment: CCAMP Water Quality Data_file2
  Final Data File used for assessment: CCAMP Water Quality Data_file3
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when nitrate exceeds 30 mg/L NO3 as N in irrigation supply water.
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road].
Temporal Representation: Data was collected over the time period 3/29/1999-12/18/2006. Salinas watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26658
 
Pollutant: Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 21
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed CCAMP Salinas (Salinas) data for Carneros Creek to determine beneficial use support and results are as follows: 0 of 21 samples exceed the criterion for Nitrate as N.
Data Reference: Final Data File used for assessment: CCAMP Salinas Toxicity data
  Final Data File used for assessment: CCAMP Water Quality Data_file1
  Final Data File used for assessment: CCAMP Water Quality Data_file2
  Final Data File used for assessment: CCAMP Water Quality Data_file3
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin Objective for municipal and domestic supply uses of inland surface waters (Section II.A.2) states the following: waters shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Article 4, Chapter 15, Section 64435, Tables 2 and 3 as listed in Table 3-2. The maximum contaminant level listed in Table 3-2 (inorganic and fluoride concentrations not to be exceeded in domestic or municipal supply) for nitrate is 10.0 mg/L (NO3 as N).
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
Objective/Criterion Reference: Title 22, Division 4, Ch. 15, Article 4, Section 64431, Table 64431-A
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 3/29/1999-12/18/2006. Salinas watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rot
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 49737
 
Pollutant: Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Nitrate as N.
Data Reference: Salinas Rotation field data 2007
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The California Maximum Contaminant Level for nitrate (NO3 as N) incorporated by reference in the Basin Plan is 10.0 mg/L (Basin Plan).
Objective/Criterion Reference: Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 1/16/2007-2/20/2007.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate.
QAPP Information Reference(s): Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 52837
 
Pollutant: Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 29
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 29 samples exceed the criterion for Nitrate as N.
Data Reference: Data from Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program, Jan. 2007-Jul. 2009
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The California Maximum Contaminant Level for nitrate (NO3 as N) incorporated by reference in the Basin Plan is 10.0 mg/L (Basin Plan).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CARBLR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 1/8/2007-7/7/2009.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: Data was collected following the Quality Assurance Project Plan for Elkhorn Slough National Estuarine Research Reserve's Volunteer Monthly Water Quality Program. Replicate data were identified in data and were qualified by RB Central Coast Water Board S
QAPP Information Reference(s): Quality Assurance Project Plan, Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program. May 15, 2009, Ver.1.3
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 52841
 
Pollutant: Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 29
Number of Exceedances: 4
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 4 of 29 samples exceed the criterion for Nitrate as N.
Data Reference: Data from Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program, Jan. 2007-Jul. 2009
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Basin Plan).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Staff Report Division of Water Quality Nutrient Screening Tools for Use in the Clean Water Act Section 303(d) Listing Process
Guideline Reference: Technical Approach to Develop Nutrient Numeric Endpoints for California. U.S. EPA Region IX. State Water Resources Control Board. 68-C-02-108-To-111
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CARBLR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 1/8/2007-7/7/2009.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: Data was collected following the Quality Assurance Project Plan for Elkhorn Slough National Estuarine Research Reserve's Volunteer Monthly Water Quality Program. Replicate data were identified in data and were qualified by RB Central Coast Water Board S
QAPP Information Reference(s): Quality Assurance Project Plan, Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program. May 15, 2009, Ver.1.3
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 49766
 
Pollutant: Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Nitrate as N.
Data Reference: Salinas Rotation field data 2007
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Basin Plan).
Objective/Criterion Reference: Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Technical Approach to Develop Nutrient Numeric Endpoints for California. U.S. EPA Region IX. State Water Resources Control Board. 68-C-02-108-To-111
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 1/16/2007-2/20/2007.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate.
QAPP Information Reference(s): Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 171983
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 7
Number of Exceedances: 2
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB3 CCAMP Salinas Rotation data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 2 of 7 samples exceeded the water quality threshold for Nitrate + Nitrite as N.
Data Reference: Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306CAR)
Temporal Representation: The samples were collected between the dates of 2012-01-11 and 2012-08-15
Environmental Conditions:
QAPP Information: SWAMP 2008, SWAMP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 171809
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 11
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 11 samples exceeded the water quality threshold for Nitrate + Nitrite as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All inland surface waters, enclosed bays, and estuaries shall not contain concentrations of inorganic chemicals in excess of the maximum contaminant levels for primary drinking water standards specified in California Code of Regulations, Title 22, Division 4, Chapter 15, Sections 64431 and 64433.2.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The California Maximum Contaminant Level for nitrate + nitrite (as N) is 10. mg/L (California Code of Regulations, Title 22).
Guideline Reference: California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-01-28 and 2013-03-13
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 171320
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Nitrate + Nitrite as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All inland surface waters, enclosed bays, and estuaries shall not contain concentrations of inorganic chemicals in excess of the maximum contaminant levels for primary drinking water standards specified in California Code of Regulations, Title 22, Division 4, Chapter 15, Sections 64431 and 64433.2.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The California Maximum Contaminant Level for nitrate + nitrite (as N) is 10. mg/L (California Code of Regulations, Title 22).
Guideline Reference: California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2014-12-12 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 171422
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Nitrate + Nitrite as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All inland surface waters, enclosed bays, and estuaries shall not contain concentrations of inorganic chemicals in excess of the maximum contaminant levels for primary drinking water standards specified in California Code of Regulations, Title 22, Division 4, Chapter 15, Sections 64431 and 64433.2.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The California Maximum Contaminant Level for nitrate + nitrite (as N) is 10. mg/L (California Code of Regulations, Title 22).
Guideline Reference: California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2014-12-12 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 171944
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 12
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 12 samples exceeded the water quality threshold for Nitrate + Nitrite as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All inland surface waters, enclosed bays, and estuaries shall not contain concentrations of inorganic chemicals in excess of the maximum contaminant levels for primary drinking water standards specified in California Code of Regulations, Title 22, Division 4, Chapter 15, Sections 64431 and 64433.2.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The California Maximum Contaminant Level for nitrate + nitrite (as N) is 10. mg/L (California Code of Regulations, Title 22).
Guideline Reference: California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2013-03-13
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 171319
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 2
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 2 of 2 samples exceeded the water quality threshold for Nitrate + Nitrite as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2014-12-12 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 171905
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 7
Number of Exceedances: 5
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 5 of 7 samples exceeded the water quality threshold for Nitrate + Nitrite as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2013-03-06
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 171425
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 2 samples exceeded the water quality threshold for Nitrate + Nitrite as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2014-12-12 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 172820
 
Pollutant: Nitrogen, Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 15
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB3 CCAMP Salinas Rotation data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 15 samples exceeded the water quality threshold for Nitrate as N. Although a total of 16 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: All inland surface waters, enclosed bays, and estuaries shall not contain concentrations of inorganic chemicals in excess of the maximum contaminant levels for primary drinking water standards specified in California Code of Regulations, Title 22, Division 4, Chapter 15, Sections 64431 and 64433.2.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The California Maximum Contaminant Level for nitrate (as N) 10.0 mg/L (California Code of Regulations, Title 22).
Guideline Reference: California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water
 
Spatial Representation: The samples were collected at 1 monitoring site (306CAR).
Temporal Representation: Data for this waterbody was collected over the date range 2012-01-11 to 2018-12-11
Environmental Conditions:
QAPP Information: SWAMP 2008, SWAMP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 172416
 
Pollutant: Nitrogen, Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed MBNMS Snapshot Day data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Nitrate as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-05-07 and 2012-05-05
Environmental Conditions:
QAPP Information: Monterey Bay NMS. 2003. California Coast Wide Snapshot Day 2003 Quality Assurance Project Plan (QAPP).
QAPP Information Reference(s): California Coast Wide Snapshot Day 2003 Quality Assurance Project Plan (QAPP)
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 173336
 
Pollutant: Nitrogen, Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 10
Number of Exceedances: 5
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB3 CCAMP Salinas Rotation data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 5 of the 10 samples exceeded the water quality threshold for Nitrate as N. Although a total of 16 samples were collected, 6 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306CAR).
Temporal Representation: Data for this waterbody was collected over the date range 2012-01-11 to 2018-12-11
Environmental Conditions:
QAPP Information: SWAMP 2008, SWAMP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 172066
 
Pollutant: Nitrogen, Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed MBNMS Snapshot Day data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 1 samples exceeded the water quality threshold for Nitrate as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-05-07 and 2011-05-07
Environmental Conditions:
QAPP Information: Monterey Bay NMS. 2003. California Coast Wide Snapshot Day 2003 Quality Assurance Project Plan (QAPP).
QAPP Information Reference(s): California Coast Wide Snapshot Day 2003 Quality Assurance Project Plan (QAPP)
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 172267
 
Pollutant: Nitrogen, Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 1
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed MBNMS Snapshot Day data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 1 samples exceeded the water quality threshold for Nitrate as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All inland surface waters, enclosed bays, and estuaries shall not contain concentrations of inorganic chemicals in excess of the maximum contaminant levels for primary drinking water standards specified in California Code of Regulations, Title 22, Division 4, Chapter 15, Sections 64431 and 64433.2.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The California Maximum Contaminant Level for nitrate (as N) 10.0 mg/L (California Code of Regulations, Title 22).
Guideline Reference: California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-05-07 and 2011-05-07
Environmental Conditions:
QAPP Information: Monterey Bay NMS. 2003. California Coast Wide Snapshot Day 2003 Quality Assurance Project Plan (QAPP).
QAPP Information Reference(s): California Coast Wide Snapshot Day 2003 Quality Assurance Project Plan (QAPP)
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 173278
 
Pollutant: Nitrogen, Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 2 samples exceeded the water quality threshold for Nitrate as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2014-12-12 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 172823
 
Pollutant: Nitrogen, Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 2 samples exceeded the water quality threshold for Nitrate as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2014-12-12 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 172644
 
Pollutant: Nitrogen, Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Nitrate as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All inland surface waters, enclosed bays, and estuaries shall not contain concentrations of inorganic chemicals in excess of the maximum contaminant levels for primary drinking water standards specified in California Code of Regulations, Title 22, Division 4, Chapter 15, Sections 64431 and 64433.2.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The California Maximum Contaminant Level for nitrate (as N) 10.0 mg/L (California Code of Regulations, Title 22).
Guideline Reference: California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2014-12-12 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 172859
 
Pollutant: Nitrogen, Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 10
Number of Exceedances: 5
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB3 CCAMP Salinas Rotation data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 5 of the 10 samples exceeded the water quality threshold for Nitrate as N. Although a total of 16 samples were collected, 6 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306CAR).
Temporal Representation: Data for this waterbody was collected over the date range 2012-01-11 to 2018-12-11
Environmental Conditions:
QAPP Information: SWAMP 2008, SWAMP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 172710
 
Pollutant: Nitrogen, Nitrate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed MBNMS Snapshot Day data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 1 samples exceeded the water quality threshold for Nitrate as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-05-07 and 2011-05-07
Environmental Conditions:
QAPP Information: Monterey Bay NMS. 2003. California Coast Wide Snapshot Day 2003 Quality Assurance Project Plan (QAPP).
QAPP Information Reference(s): California Coast Wide Snapshot Day 2003 Quality Assurance Project Plan (QAPP)
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 49729
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Nitrate/Nitrite as N.
Data Reference: Salinas Rotation field data 2007
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Basin Plan).
Objective/Criterion Reference: Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Technical Approach to Develop Nutrient Numeric Endpoints for California. U.S. EPA Region IX. State Water Resources Control Board. 68-C-02-108-To-111
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 1/16/2007-2/20/2007.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate.
QAPP Information Reference(s): Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 52868
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 14
Number of Exceedances: 3
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 3 of 14 samples exceed the criterion for Nitrate/Nitrite as N.
Data Reference: Data from Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program, Jan. 2007-Jul. 2009
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Basin Plan).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Staff Report Division of Water Quality Nutrient Screening Tools for Use in the Clean Water Act Section 303(d) Listing Process
Guideline Reference: Technical Approach to Develop Nutrient Numeric Endpoints for California. U.S. EPA Region IX. State Water Resources Control Board. 68-C-02-108-To-111
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CARBLR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 1/8/2007-2/3/2009.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: Data was collected following the Quality Assurance Project Plan for Elkhorn Slough National Estuarine Research Reserve's Volunteer Monthly Water Quality Program. Replicate data were identified in data and were qualified by RB Central Coast Water Board S
QAPP Information Reference(s): Quality Assurance Project Plan, Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program. May 15, 2009, Ver.1.3
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 49738
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Nitrate/Nitrite as N.
Data Reference: Salinas Rotation field data 2007
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The California Maximum Contaminant Level for nitrate + nitrite (as N) that is incorporated by reference in the Basin Plan is 10.0 mg/L (Basin Plan).
Objective/Criterion Reference: Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 1/16/2007-2/20/2007.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate.
QAPP Information Reference(s): Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26689
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 9
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed National Estuarine Research Reserve Monitoring Program (R3_ESNERR) data for Carneros Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for Nitrate/Nitrite
Data Reference: Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Field Data from 2006
  Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Water Quality Data from 2006
  Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Water Quality Data from 94-04
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: OEHHA public Health Goals for Nitrate and Nitrogen in Drinking Water (December 1997). Page 6.
Objective/Criterion Reference: Public health goals for nitrate and nitrite in drinking water
 
Evaluation Guideline: OEHHA Public Health Goal states that sum of the concentration of nitrate + nitrite shall not exceed 10 mg/L (NO3+NO2 expressed as N).
Guideline Reference: Public health goals for nitrate and nitrite in drinking water
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CARBLR - Carneros Creek]
Temporal Representation: Data was collected over the time period 1/10/2006-12/4/2006.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: QAPP was adopted for work conducted since 2005. Prior to 2005 no QAPP was in place and data entry was completed by volunteers. Multiple errors were identified in data and were flagged by RB staff (in communication with Elkhorn Slough Program staff) prior
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 52892
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 14
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 14 samples exceed the criterion for Nitrate/Nitrite as N.
Data Reference: Data from Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program, Jan. 2007-Jul. 2009
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The California Maximum Contaminant Level for nitrate + nitrite (as N) that is incorporated by reference in the Basin Plan is 10.0 mg/L (Basin Plan).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CARBLR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 1/8/2007-2/3/2009.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: Data was collected following the Quality Assurance Project Plan for Elkhorn Slough National Estuarine Research Reserve's Volunteer Monthly Water Quality Program. Replicate data were identified in data and were qualified by RB Central Coast Water Board S
QAPP Information Reference(s): Quality Assurance Project Plan, Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program. May 15, 2009, Ver.1.3
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 52907
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 14
Number of Exceedances: 3
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 3 of 14 samples exceed the criterion for Nitrate/Nitrite as N.
Data Reference: Data from Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program, Jan. 2007-Jul. 2009
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Basin Plan).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Staff Report Division of Water Quality Nutrient Screening Tools for Use in the Clean Water Act Section 303(d) Listing Process
Guideline Reference: Technical Approach to Develop Nutrient Numeric Endpoints for California. U.S. EPA Region IX. State Water Resources Control Board. 68-C-02-108-To-111
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CARBLR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 1/8/2007-2/3/2009.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: Data was collected following the Quality Assurance Project Plan for Elkhorn Slough National Estuarine Research Reserve's Volunteer Monthly Water Quality Program. Replicate data were identified in data and were qualified by RB Central Coast Water Board S
QAPP Information Reference(s): Quality Assurance Project Plan, Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program. May 15, 2009, Ver.1.3
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 49767
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Nitrate/Nitrite as N.
Data Reference: Salinas Rotation field data 2007
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Basin Plan).
Objective/Criterion Reference: Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
Guideline Reference: Technical Approach to Develop Nutrient Numeric Endpoints for California. U.S. EPA Region IX. State Water Resources Control Board. 68-C-02-108-To-111
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 1/16/2007-2/20/2007.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate.
QAPP Information Reference(s): Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 171884
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 12
Number of Exceedances: 4
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 4 of 12 samples exceeded the water quality threshold for Nitrate + Nitrite as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2013-03-13
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 171642
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 12
Number of Exceedances: 7
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 7 of 12 samples exceeded the water quality threshold for Nitrate + Nitrite as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2013-03-13
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 171410
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 12
Number of Exceedances: 4
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 4 of 12 samples exceeded the water quality threshold for Nitrate + Nitrite as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2013-03-13
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 171825
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 2
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 2 of 2 samples exceeded the water quality threshold for Nitrate + Nitrite as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2014-12-12 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 171665
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 2
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 2 of 2 samples exceeded the water quality threshold for Nitrate + Nitrite as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2014-12-12 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 171447
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 7
Number of Exceedances: 2
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB3 CCAMP Salinas Rotation data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 2 of 7 samples exceeded the water quality threshold for Nitrate + Nitrite as N.
Data Reference: Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306CAR)
Temporal Representation: The samples were collected between the dates of 2012-01-11 and 2012-08-15
Environmental Conditions:
QAPP Information: SWAMP 2008, SWAMP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 171220
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 2
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 2 of 2 samples exceeded the water quality threshold for Nitrate + Nitrite as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2014-12-12 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 171105
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 2 samples exceeded the water quality threshold for Nitrate + Nitrite as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2014-12-12 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 171768
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 7
Number of Exceedances: 5
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 5 of 7 samples exceeded the water quality threshold for Nitrate + Nitrite as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2013-03-06
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 171080
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 2 samples exceeded the water quality threshold for Nitrate + Nitrite as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2014-12-12 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 171520
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Nitrate + Nitrite as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All inland surface waters, enclosed bays, and estuaries shall not contain concentrations of inorganic chemicals in excess of the maximum contaminant levels for primary drinking water standards specified in California Code of Regulations, Title 22, Division 4, Chapter 15, Sections 64431 and 64433.2.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The California Maximum Contaminant Level for nitrate + nitrite (as N) is 10. mg/L (California Code of Regulations, Title 22).
Guideline Reference: California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2014-12-12 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 171939
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 11
Number of Exceedances: 3
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 3 of 11 samples exceeded the water quality threshold for Nitrate + Nitrite as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-01-28 and 2013-03-13
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 171879
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 12
Number of Exceedances: 7
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 7 of 12 samples exceeded the water quality threshold for Nitrate + Nitrite as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2013-03-13
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 171892
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 7
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB3 CCAMP Salinas Rotation data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 7 samples exceeded the water quality threshold for Nitrate + Nitrite as N.
Data Reference: Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: All inland surface waters, enclosed bays, and estuaries shall not contain concentrations of inorganic chemicals in excess of the maximum contaminant levels for primary drinking water standards specified in California Code of Regulations, Title 22, Division 4, Chapter 15, Sections 64431 and 64433.2.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The California Maximum Contaminant Level for nitrate + nitrite (as N) is 10. mg/L (California Code of Regulations, Title 22).
Guideline Reference: California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water
 
Spatial Representation: The samples were collected at 1 monitoring site (306CAR)
Temporal Representation: The samples were collected between the dates of 2012-01-11 and 2012-08-15
Environmental Conditions:
QAPP Information: SWAMP 2008, SWAMP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 171732
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 11
Number of Exceedances: 3
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 3 of 11 samples exceeded the water quality threshold for Nitrate + Nitrite as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N.
Guideline Reference: Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-01-28 and 2013-03-13
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 171791
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 7
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 7 samples exceeded the water quality threshold for Nitrate + Nitrite as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All inland surface waters, enclosed bays, and estuaries shall not contain concentrations of inorganic chemicals in excess of the maximum contaminant levels for primary drinking water standards specified in California Code of Regulations, Title 22, Division 4, Chapter 15, Sections 64431 and 64433.2.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The California Maximum Contaminant Level for nitrate + nitrite (as N) is 10. mg/L (California Code of Regulations, Title 22).
Guideline Reference: California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2013-03-06
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125752, Nitrate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 171657
 
Pollutant: Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Nitrate + Nitrite as N.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All inland surface waters, enclosed bays, and estuaries shall not contain concentrations of inorganic chemicals in excess of the maximum contaminant levels for primary drinking water standards specified in California Code of Regulations, Title 22, Division 4, Chapter 15, Sections 64431 and 64433.2.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The California Maximum Contaminant Level for nitrate + nitrite (as N) is 10. mg/L (California Code of Regulations, Title 22).
Guideline Reference: California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2014-12-12 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
 
DECISION ID
113606
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Oxygen, Dissolved
Final Listing Decision: Do Not Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not Delist from 303(d) list (TMDL required list)(2018)
Revision Status Revised
Sources: No Source Analysis Available
Expected TMDL Completion Date: 2025
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: This pollutant is being considered for removal from the section 303(d) List under section 4.2 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status.

Twenty-five lines of evidence are available in the administrative record to assess this pollutant.

Four hundred six of 1,007 samples exceed the cold freshwater habitat water quality objective (Basin Plan). One hundred sixteen of 207 samples exceed the water quality objective for fish spawning (Basin Plan). Eighty of the 207 samples exceed the water quality objective for warm freshwater habitat (Basin Plan). Note that there is no difference between samples fractions ‘dissolved’ and ‘total,’ therefore sample and exceedance counts will be summed for the purpose of this decision.

Previous decisions (pre-2020) included dissolved oxygen saturation LOEs as ancillary evidence. This decision will no longer include dissolved oxygen saturation and these LOEs will be retired next cycle.

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the section 303(d) List.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. Four hundred six of 1,007 samples exceed the cold freshwater habitat objective, one hundred sixteen of 207 samples exceed the fish spawning objective, and eighty of the 207 samples exceed the warm freshwater habitat objective. These exceed the allowable frequency listed in Table 4.2 of the Listing Policy.
4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) List because applicable water quality standards for the pollutant are being exceeded.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 113606, Oxygen, Dissolved
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 174032
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 44
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 44 samples exceeded the water quality threshold for Oxygen, Dissolved.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113606, Oxygen, Dissolved
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 174088
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 35
Number of Exceedances: 26
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 26 of 35 samples exceeded the water quality threshold for Oxygen, Dissolved.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The dissolved oxygen concentration shall not be reduced below 5.0 mg/l at any time (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-01-28 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113606, Oxygen, Dissolved
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 173894
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 44
Number of Exceedances: 41
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 41 of 44 samples exceeded the water quality threshold for Oxygen, Dissolved.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113606, Oxygen, Dissolved
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 174666
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Fish Spawning
 
Number of Samples: 42
Number of Exceedances: 14
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 14 of 42 samples exceeded the water quality threshold for Oxygen, Dissolved.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113606, Oxygen, Dissolved
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26690
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 170
Number of Exceedances: 78
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed National Estuarine Research Reserve Monitoring Program (R3_ESNERR) data for Carneros Creek to determine beneficial use support and results are as follows: 78 of 170 samples exceed the criterion for Oxygen, Disso
Data Reference: Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Field Data from 2006
  Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Water Quality Data from 2006
  Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Water Quality Data from 94-04
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan, Central Coast Basin, Cold Water Habitat Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time.
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CARBLR - Carneros Creek]
Temporal Representation: Data was collected over the time period 1/20/1990-10/10/2006.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: QAPP was adopted for work conducted since 2005. Prior to 2005 no QAPP was in place and data entry was completed by volunteers. Multiple errors were identified in data and were flagged by RB staff (in communication with Elkhorn Slough Program staff) prior
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 113606, Oxygen, Dissolved
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26674
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for Carneros Creek to determine beneficial use support and results are as follows: 1 of 2 samples exceed the criterion for Oxygen, Dissolved.
Data Reference: Final Data File used for assessment: CCAMP Water Quality Data_file1
  Final Data File used for assessment: CCAMP Water Quality Data_file2
  Final Data File used for assessment: CCAMP Water Quality Data_file3
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan, Central Coast Basin, Cold Water Habitat Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time.
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 7/6/1999-7/27/1999. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 113606, Oxygen, Dissolved
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 52869
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Oxygen, Dissolved.
Data Reference: Data from Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program, Jan. 2007-Jul. 2009
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time (Basin Plan).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CARBLR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 3/5/2007-7/10/2007.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: Data was collected following the Quality Assurance Project Plan for Elkhorn Slough National Estuarine Research Reserve's Volunteer Monthly Water Quality Program. Replicate data were identified in data and were qualified by RB Central Coast Water Board S
QAPP Information Reference(s): Quality Assurance Project Plan, Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program. May 15, 2009, Ver.1.3
 
Line of Evidence (LOE) for Decision ID 113606, Oxygen, Dissolved
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26699
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 598
Number of Exceedances: 195
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for Carneros Creek to determine beneficial use support and results are as follows: 195 of 598 samples exceed the criterion for Oxygen, Dissolved.
Data Reference: Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A
  Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan, Central Coast Basin, Cold Water Habitat Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time.
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 9 monitoring sites [ CA-COR - Carneros Creek at Corey Rd., CA-SMC - Carneros Creek at San Miguel Canyon Rd., CA-KIR - Carneros Creek at Kirby Park, CA-BIR - Carneros Creek at Bend in road,
Temporal Representation: Data was collected over the time period 10/4/2000-2/11/2007.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 113606, Oxygen, Dissolved
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26703
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for Carneros Creek to determine beneficial use support and results are as follows: 1 of 1 samples exceed the criterion for Oxygen, Dissolved.
Data Reference: Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan, Central Coast Basin, Cold Water Habitat Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time.
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306-CARNE-1 - Carneros Creek]
Temporal Representation: Data was collected on a single day 5/1/2004. Coastal Watershed Council Snapshot Day Monitoring is conducted annually.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 113606, Oxygen, Dissolved
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26671
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 22
Number of Exceedances: 13
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed CCAMP Salinas (Salinas) data for Carneros Creek to determine beneficial use support and results are as follows: 13 of 22 samples exceed the criterion for Oxygen, Dissolved.
Data Reference: Final Data File used for assessment: CCAMP Salinas Toxicity data
  Final Data File used for assessment: CCAMP Water Quality Data_file1
  Final Data File used for assessment: CCAMP Water Quality Data_file2
  Final Data File used for assessment: CCAMP Water Quality Data_file3
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan, Central Coast Basin, Cold Water Habitat Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time.
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 3/1/1999-12/18/2006. Salinas watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rota
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 113606, Oxygen, Dissolved
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 49730
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 2
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 2 of 2 samples exceed the criterion for Oxygen, Dissolved.
Data Reference: Salinas Rotation field data 2007
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time (Basin Plan).
Objective/Criterion Reference: Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 1/16/2007-2/20/2007.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate.
QAPP Information Reference(s): Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
 
Line of Evidence (LOE) for Decision ID 113606, Oxygen, Dissolved
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 174235
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 22
Number of Exceedances: 20
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 20 of 22 samples exceeded the water quality threshold for Oxygen, Dissolved.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2011-05-07
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113606, Oxygen, Dissolved
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 174328
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 20
Number of Exceedances: 9
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB3 CCAMP Salinas Rotation data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 9 of 20 samples exceeded the water quality threshold for Oxygen, Dissolved.
Data Reference: Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306CAR)
Temporal Representation: The samples were collected between the dates of 2012-01-11 and 2018-12-11
Environmental Conditions:
QAPP Information: SWAMP 2008, SWAMP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 113606, Oxygen, Dissolved
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 174116
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 42
Number of Exceedances: 14
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 14 of 42 samples exceeded the water quality threshold for Oxygen, Dissolved.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113606, Oxygen, Dissolved
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 174107
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 35
Number of Exceedances: 31
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 31 of 35 samples exceeded the water quality threshold for Oxygen, Dissolved.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-01-28 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113606, Oxygen, Dissolved
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 174108
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 44
Number of Exceedances: 24
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 24 of 44 samples exceeded the water quality threshold for Oxygen, Dissolved.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The dissolved oxygen concentration shall not be reduced below 5.0 mg/l at any time (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113606, Oxygen, Dissolved
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 174061
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Fish Spawning
 
Number of Samples: 44
Number of Exceedances: 41
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 41 of 44 samples exceeded the water quality threshold for Oxygen, Dissolved.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113606, Oxygen, Dissolved
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 174267
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Fish Spawning
 
Number of Samples: 44
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 44 samples exceeded the water quality threshold for Oxygen, Dissolved.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113606, Oxygen, Dissolved
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 174296
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Fish Spawning
 
Number of Samples: 20
Number of Exceedances: 9
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB3 CCAMP Salinas Rotation data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 9 of 20 samples exceeded the water quality threshold for Oxygen, Dissolved.
Data Reference: Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306CAR)
Temporal Representation: The samples were collected between the dates of 2012-01-11 and 2018-12-11
Environmental Conditions:
QAPP Information: SWAMP 2008, SWAMP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 113606, Oxygen, Dissolved
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 174665
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Fish Spawning
 
Number of Samples: 35
Number of Exceedances: 31
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 31 of 35 samples exceeded the water quality threshold for Oxygen, Dissolved.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-01-28 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113606, Oxygen, Dissolved
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 173910
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Fish Spawning
 
Number of Samples: 22
Number of Exceedances: 20
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 20 of 22 samples exceeded the water quality threshold for Oxygen, Dissolved.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2011-05-07
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113606, Oxygen, Dissolved
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 174321
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 42
Number of Exceedances: 6
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 6 of 42 samples exceeded the water quality threshold for Oxygen, Dissolved.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The dissolved oxygen concentration shall not be reduced below 5.0 mg/l at any time (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113606, Oxygen, Dissolved
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 174062
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 44
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 44 samples exceeded the water quality threshold for Oxygen, Dissolved.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The dissolved oxygen concentration shall not be reduced below 5.0 mg/l at any time (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113606, Oxygen, Dissolved
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 174699
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 20
Number of Exceedances: 8
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB3 CCAMP Salinas Rotation data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 8 of 20 samples exceeded the water quality threshold for Oxygen, Dissolved.
Data Reference: Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: The dissolved oxygen concentration shall not be reduced below 5.0 mg/l at any time (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306CAR)
Temporal Representation: The samples were collected between the dates of 2012-01-11 and 2018-12-11
Environmental Conditions:
QAPP Information: SWAMP 2008, SWAMP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 113606, Oxygen, Dissolved
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 173948
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 22
Number of Exceedances: 16
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 16 of 22 samples exceeded the water quality threshold for Oxygen, Dissolved.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The dissolved oxygen concentration shall not be reduced below 5.0 mg/l at any time (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33)
Temporal Representation: The samples were collected between the dates of 2010-12-22 and 2011-05-07
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
 
DECISION ID
113611
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Turbidity
Final Listing Decision: Do Not Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not Delist from 303(d) list (TMDL required list)(2018)
Revision Status Revised
Sources: No Source Analysis Available
Expected TMDL Completion Date: 2035
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: This pollutant is being considered for removal from the Clean Water Act (CWA) section 303(d) List under section 4.2 of the Listing Policy. Under section 4.2 a single line of evidence is necessary to assess listing status.

A total of 15 lines of evidence are available in the administrative record to assess this pollutant. Sample and exceedance counts for the lines of evidence with the fraction identified as “none” or “not recorded” are grouped together with those having the fraction “total”, based on the analytical method used. Once summed, a total of 210 of 405 samples exceed the evaluation guideline for cold freshwater habitat (Sigler et al. 1984) and 31 of 66 samples exceed the evaluation guideline for warm freshwater habitat (Shoup, D.E. and Wahl D.H., 2009) used to interpret the water quality objectives for the aquatic life beneficial uses.

After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) List.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. A total of 210 of 405 samples exceed the evaluation guideline for cold freshwater habitat and 31 of 66 samples exceed the evaluation guideline for warm freshwater habitat and this exceeds the allowable frequency listed in Table 4.2 of the Listing Policy.
4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 113611, Turbidity
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 183148
 
Pollutant: Turbidity
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 13
Number of Exceedances: 7
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB3 CCAMP Salinas Rotation data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 7 of 13 samples exceeded the water quality threshold for Turbidity.
Data Reference: Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. (Basin Plan)
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Turbidities of 25 NTU or greater can cause a reduction in juvenile salmonid growth due to interference with their ability to find food (Sigler et al. 1984).
Guideline Reference: Effects of chronic turbidity on density and growth of steelheads and coho salmon. Transactions of the American Fisheries Society 113:142-150
 
Spatial Representation: The samples were collected at 1 monitoring site (306CAR)
Temporal Representation: The samples were collected between the dates of 2012-01-11 and 2018-12-11
Environmental Conditions:
QAPP Information: SWAMP 2008, SWAMP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 113611, Turbidity
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26678
 
Pollutant: Turbidity
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 9
Number of Exceedances: 6
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed CCAMP Salinas (Salinas) data for Carneros Creek to determine beneficial use support and results are as follows: 6 of 9 samples exceed the criterion for Turbidity(NTU).
Data Reference: Final Data File used for assessment: CCAMP Salinas Toxicity data
  Final Data File used for assessment: CCAMP Water Quality Data_file1
  Final Data File used for assessment: CCAMP Water Quality Data_file2
  Final Data File used for assessment: CCAMP Water Quality Data_file3
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries.
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline: Sigler et al. (1984) states that turbidities of 25 NTU's or greater caused reduction in juvenile salmonid growth due to interference with their ability to find food.
Guideline Reference: Effects of chronic turbidity on density and growth of steelheads and coho salmon. Transactions of the American Fisheries Society 113:142-150
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 1/23/2006-12/18/2006. Salinas watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rot
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 113611, Turbidity
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 182350
 
Pollutant: Turbidity
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 13
Number of Exceedances: 5
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 5 of 13 samples exceeded the water quality threshold for Turbidity.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. (Basin Plan)
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Turbidities of 25 NTU or greater can cause a reduction in juvenile salmonid growth due to interference with their ability to find food (Sigler et al. 1984).
Guideline Reference: Effects of chronic turbidity on density and growth of steelheads and coho salmon. Transactions of the American Fisheries Society 113:142-150
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2012-12-06 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113611, Turbidity
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 182981
 
Pollutant: Turbidity
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 13
Number of Exceedances: 9
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 9 of 13 samples exceeded the water quality threshold for Turbidity.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Turbidities of 40 NTU or greater can cause a reduced foraging efficiency and a shift in prey selection in piscivorous fish (largemouth bass) due to interference with their ability to find prey (Shoup, D.E. and Wahl D.H., 2009).
Guideline Reference: The Effects of Turbidity on Prey Selection by Piscivorous Largemouth Bass
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2012-12-06 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113611, Turbidity
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 182902
 
Pollutant: Turbidity
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 13
Number of Exceedances: 7
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 7 of 13 samples exceeded the water quality threshold for Turbidity.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Turbidities of 40 NTU or greater can cause a reduced foraging efficiency and a shift in prey selection in piscivorous fish (largemouth bass) due to interference with their ability to find prey (Shoup, D.E. and Wahl D.H., 2009).
Guideline Reference: The Effects of Turbidity on Prey Selection by Piscivorous Largemouth Bass
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2012-12-06 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113611, Turbidity
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 183068
 
Pollutant: Turbidity
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 13
Number of Exceedances: 5
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 5 of 13 samples exceeded the water quality threshold for Turbidity.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Turbidities of 40 NTU or greater can cause a reduced foraging efficiency and a shift in prey selection in piscivorous fish (largemouth bass) due to interference with their ability to find prey (Shoup, D.E. and Wahl D.H., 2009).
Guideline Reference: The Effects of Turbidity on Prey Selection by Piscivorous Largemouth Bass
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2012-12-06 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113611, Turbidity
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 182242
 
Pollutant: Turbidity
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 13
Number of Exceedances: 10
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 10 of 13 samples exceeded the water quality threshold for Turbidity.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. (Basin Plan)
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Turbidities of 25 NTU or greater can cause a reduction in juvenile salmonid growth due to interference with their ability to find food (Sigler et al. 1984).
Guideline Reference: Effects of chronic turbidity on density and growth of steelheads and coho salmon. Transactions of the American Fisheries Society 113:142-150
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2012-12-06 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113611, Turbidity
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 182955
 
Pollutant: Turbidity
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 13
Number of Exceedances: 9
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 9 of 13 samples exceeded the water quality threshold for Turbidity.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. (Basin Plan)
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Turbidities of 25 NTU or greater can cause a reduction in juvenile salmonid growth due to interference with their ability to find food (Sigler et al. 1984).
Guideline Reference: Effects of chronic turbidity on density and growth of steelheads and coho salmon. Transactions of the American Fisheries Society 113:142-150
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2012-12-06 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113611, Turbidity
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 183138
 
Pollutant: Turbidity
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 14
Number of Exceedances: 4
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 4 of 14 samples exceeded the water quality threshold for Turbidity.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Turbidities of 40 NTU or greater can cause a reduced foraging efficiency and a shift in prey selection in piscivorous fish (largemouth bass) due to interference with their ability to find prey (Shoup, D.E. and Wahl D.H., 2009).
Guideline Reference: The Effects of Turbidity on Prey Selection by Piscivorous Largemouth Bass
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2012-12-06 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113611, Turbidity
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 183024
 
Pollutant: Turbidity
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 13
Number of Exceedances: 6
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB3 CCAMP Salinas Rotation data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 6 of 13 samples exceeded the water quality threshold for Turbidity.
Data Reference: Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Turbidities of 40 NTU or greater can cause a reduced foraging efficiency and a shift in prey selection in piscivorous fish (largemouth bass) due to interference with their ability to find prey (Shoup, D.E. and Wahl D.H., 2009).
Guideline Reference: The Effects of Turbidity on Prey Selection by Piscivorous Largemouth Bass
 
Spatial Representation: The samples were collected at 1 monitoring site (306CAR)
Temporal Representation: The samples were collected between the dates of 2012-01-11 and 2018-12-11
Environmental Conditions:
QAPP Information: SWAMP 2008, SWAMP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 113611, Turbidity
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26691
 
Pollutant: Turbidity
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 186
Number of Exceedances: 95
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed National Estuarine Research Reserve Monitoring Program (R3_ESNERR) data for Carneros Creek to determine beneficial use support and results are as follows: 95 of 186 samples exceed the criterion for Turbidity(NTU
Data Reference: Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Field Data from 2006
  Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Water Quality Data from 2006
  Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Water Quality Data from 94-04
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries.
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline: Sigler et al. (1984) states that turbidities of 25 NTU's or greater caused reduction in juvenile salmonid growth due to interference with their ability to find food.
Guideline Reference: Effects of chronic turbidity on density and growth of steelheads and coho salmon. Transactions of the American Fisheries Society 113:142-150
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CARBLR - Carneros Creek]
Temporal Representation: Data was collected over the time period 1/20/1990-10/10/2006.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: QAPP was adopted for work conducted since 2005. Prior to 2005 no QAPP was in place and data entry was completed by volunteers. Multiple errors were identified in data and were flagged by RB staff (in communication with Elkhorn Slough Program staff) prior
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 113611, Turbidity
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26692
 
Pollutant: Turbidity
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 137
Number of Exceedances: 71
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for Carneros Creek to determine beneficial use support and results are as follows: 71 of 137 samples exceed the criterion for Turbidity(NTU).
Data Reference: Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A
  Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries.
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline: Sigler et al. (1984) states that turbidities of 25 NTU's or greater caused reduction in juvenile salmonid growth due to interference with their ability to find food.
Guideline Reference: Effects of chronic turbidity on density and growth of steelheads and coho salmon. Transactions of the American Fisheries Society 113:142-150
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 8 monitoring sites [ CA-SMC - Carneros Creek at San Miguel Canyon Rd., CA-KIR - Carneros Creek at Kirby Park, CA-COR - Carneros Creek at Corey Rd., CA-BIR - Carneros Creek at Bend in road,
Temporal Representation: Data was collected over the time period 9/21/2005-2/11/2007.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 113611, Turbidity
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 52961
 
Pollutant: Turbidity
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 5
Number of Exceedances: 3
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 3 of 5 samples exceed the criterion for Turbidity(NTU).
Data Reference: Data from Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program, Jan. 2007-Jul. 2009
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. (Basin Plan)
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Turbidities of 25 NTU or greater can cause a reduction in juvenile salmonid growth due to interference with their ability to find food (Sigler et al. 1984).
Guideline Reference: Effects of chronic turbidity on density and growth of steelheads and coho salmon. Transactions of the American Fisheries Society 113:142-150
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CARBLR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 3/5/2007-7/10/2007.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: Data was collected following the Quality Assurance Project Plan for Elkhorn Slough National Estuarine Research Reserve's Volunteer Monthly Water Quality Program. Replicate data were identified in data and were qualified by RB Central Coast Water Board S
QAPP Information Reference(s): Quality Assurance Project Plan, Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program. May 15, 2009, Ver.1.3
 
Line of Evidence (LOE) for Decision ID 113611, Turbidity
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 49733
 
Pollutant: Turbidity
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Turbidity(NTU).
Data Reference: Salinas Rotation field data 2007
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. (Basin Plan)
Objective/Criterion Reference: Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.
 
Evaluation Guideline: Turbidities of 25 NTU or greater can cause a reduction in juvenile salmonid growth due to interference with their ability to find food (Sigler et al. 1984).
Guideline Reference: Effects of chronic turbidity on density and growth of steelheads and coho salmon. Transactions of the American Fisheries Society 113:142-150
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 1/16/2007-2/20/2007.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate.
QAPP Information Reference(s): Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
 
Line of Evidence (LOE) for Decision ID 113611, Turbidity
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 182210
 
Pollutant: Turbidity
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 14
Number of Exceedances: 4
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 4 of 14 samples exceeded the water quality threshold for Turbidity.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. (Basin Plan)
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Turbidities of 25 NTU or greater can cause a reduction in juvenile salmonid growth due to interference with their ability to find food (Sigler et al. 1984).
Guideline Reference: Effects of chronic turbidity on density and growth of steelheads and coho salmon. Transactions of the American Fisheries Society 113:142-150
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2012-12-06 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
 
DECISION ID
113608
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: pH
Final Listing Decision: Do Not Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not Delist from 303(d) list (TMDL required list)(2018)
Revision Status Revised
Sources: No Source Analysis Available
Expected TMDL Completion Date: 2035
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: This pollutant is being considered for removal from the Clean Water Act section 303(d) List under sections 4.2 of the Listing Policy. Under this section, a single line of evidence is necessary to assess listing status.

Fifty-four lines of evidence are available in the administrative record to assess this pollutant. Two hundred twenty-one of the 956 samples exceed the maximum pH water quality objective for Municipal and Domestic Supply, Contact and Non-contact Recreation beneficial uses. Two hundred thirty-two of the 956 samples exceed the maximum pH water quality objective for Cold Freshwater Habitat and 84 of 117 samples exceeded the Agriculture Supply objective.

After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) List because applicable water quality standards for the pollutant are being exceeded.

This conclusion is based on the staff findings that:

1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. Two hundred twenty-one of the 956 samples exceed the maximum pH water quality objective for Municipal and Domestic Supply, Contact and Non-contact Recreation beneficial uses, 232 of the 956 samples exceed the maximum pH water quality objective for Cold Freshwater Habitat, 84 of 117 samples exceeded the Agriculture Supply objective and these exceed the allowable frequency listed in Table 4.2 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) List because applicable water quality standards for the pollutant are being exceeded.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 177770
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 21
Number of Exceedances: 21
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 21 of 21 samples exceeded the water quality threshold for pH.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for warm fresh water habitat (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 7.0 nor raised above 8.5.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-03 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 178119
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 21
Number of Exceedances: 11
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 11 of 21 samples exceeded the water quality threshold for pH.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for water contact recreation (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 6.5 nor raised above 8.3.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-03 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 178549
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Non-Contact Recreation
 
Number of Samples: 21
Number of Exceedances: 11
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 11 of 21 samples exceeded the water quality threshold for pH.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 6.5 nor raised above 8.3.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-03 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 177840
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Non-Contact Recreation
 
Number of Samples: 13
Number of Exceedances: 7
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB3 CCAMP Salinas Rotation data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 7 of 13 samples exceeded the water quality threshold for pH.
Data Reference: Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 6.5 nor raised above 8.3.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306CAR)
Temporal Representation: The samples were collected between the dates of 2012-06-26 and 2018-11-06
Environmental Conditions:
QAPP Information: SWAMP 2008, SWAMP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 177748
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 13
Number of Exceedances: 7
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB3 CCAMP Salinas Rotation data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 7 of 13 samples exceeded the water quality threshold for pH.
Data Reference: Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for municipal and domestic supply (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 6.5 nor raised above 8.3.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306CAR)
Temporal Representation: The samples were collected between the dates of 2012-06-26 and 2018-11-06
Environmental Conditions:
QAPP Information: SWAMP 2008, SWAMP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 177873
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Non-Contact Recreation
 
Number of Samples: 24
Number of Exceedances: 3
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 3 of 24 samples exceeded the water quality threshold for pH.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 6.5 nor raised above 8.3.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-01-03 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 178681
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 24
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 24 samples exceeded the water quality threshold for pH.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for water contact recreation (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 6.5 nor raised above 8.3.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-01-03 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 177656
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 21
Number of Exceedances: 21
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 21 of 21 samples exceeded the water quality threshold for pH.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for cold fresh water habitat (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 7.0 nor raised above 8.5.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-03 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 177059
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 10
Number of Exceedances: 10
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 10 of 10 samples exceeded the water quality threshold for pH.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for cold fresh water habitat (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 7.0 nor raised above 8.5.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33)
Temporal Representation: The samples were collected between the dates of 2011-01-03 and 2011-05-07
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 178647
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 13
Number of Exceedances: 7
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB3 CCAMP Salinas Rotation data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 7 of 13 samples exceeded the water quality threshold for pH.
Data Reference: Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for water contact recreation (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 6.5 nor raised above 8.3.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306CAR)
Temporal Representation: The samples were collected between the dates of 2012-06-26 and 2018-11-06
Environmental Conditions:
QAPP Information: SWAMP 2008, SWAMP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 177304
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 13
Number of Exceedances: 7
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB3 CCAMP Salinas Rotation data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 7 of 13 samples exceeded the water quality threshold for pH.
Data Reference: Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for cold fresh water habitat (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 7.0 nor raised above 8.5.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306CAR)
Temporal Representation: The samples were collected between the dates of 2012-06-26 and 2018-11-06
Environmental Conditions:
QAPP Information: SWAMP 2008, SWAMP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 177972
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 24
Number of Exceedances: 3
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 3 of 24 samples exceeded the water quality threshold for pH.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for municipal and domestic supply (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 6.5 nor raised above 8.3.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-01-03 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 178198
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 13
Number of Exceedances: 7
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB3 CCAMP Salinas Rotation data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 7 of 13 samples exceeded the water quality threshold for pH.
Data Reference: Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for warm fresh water habitat (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 7.0 nor raised above 8.5.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306CAR)
Temporal Representation: The samples were collected between the dates of 2012-06-26 and 2018-11-06
Environmental Conditions:
QAPP Information: SWAMP 2008, SWAMP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 178585
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Non-Contact Recreation
 
Number of Samples: 10
Number of Exceedances: 6
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 6 of 10 samples exceeded the water quality threshold for pH.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 6.5 nor raised above 8.3.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33)
Temporal Representation: The samples were collected between the dates of 2011-01-03 and 2011-05-07
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 177661
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 24
Number of Exceedances: 11
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 11 of 24 samples exceeded the water quality threshold for pH.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for cold fresh water habitat (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 7.0 nor raised above 8.5.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-01-03 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 177778
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 10
Number of Exceedances: 10
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 10 of 10 samples exceeded the water quality threshold for pH.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for warm fresh water habitat (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 7.0 nor raised above 8.5.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33)
Temporal Representation: The samples were collected between the dates of 2011-01-03 and 2011-05-07
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 177874
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Non-Contact Recreation
 
Number of Samples: 24
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 24 samples exceeded the water quality threshold for pH.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 6.5 nor raised above 8.3.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-01-03 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 178633
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 10
Number of Exceedances: 6
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 6 of 10 samples exceeded the water quality threshold for pH.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for water contact recreation (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 6.5 nor raised above 8.3.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33)
Temporal Representation: The samples were collected between the dates of 2011-01-03 and 2011-05-07
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 178655
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 24
Number of Exceedances: 3
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 3 of 24 samples exceeded the water quality threshold for pH.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for water contact recreation (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 6.5 nor raised above 8.3.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-01-03 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 177240
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 24
Number of Exceedances: 10
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 10 of 24 samples exceeded the water quality threshold for pH.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for cold fresh water habitat (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 7.0 nor raised above 8.5.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-01-03 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 177802
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 24
Number of Exceedances: 11
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 11 of 24 samples exceeded the water quality threshold for pH.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for warm fresh water habitat (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 7.0 nor raised above 8.5.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-01-03 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 179222
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 25
Number of Exceedances: 16
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 16 of 25 samples exceeded the water quality threshold for pH.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for water contact recreation (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 6.5 nor raised above 8.3.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-01-03 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 178054
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 21
Number of Exceedances: 11
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 11 of 21 samples exceeded the water quality threshold for pH.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for municipal and domestic supply (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 6.5 nor raised above 8.3.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-03 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 177684
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 10
Number of Exceedances: 6
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 6 of 10 samples exceeded the water quality threshold for pH.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for municipal and domestic supply (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 6.5 nor raised above 8.3.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33)
Temporal Representation: The samples were collected between the dates of 2011-01-03 and 2011-05-07
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 178865
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 25
Number of Exceedances: 25
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 25 of 25 samples exceeded the water quality threshold for pH.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for warm fresh water habitat (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 7.0 nor raised above 8.5.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-01-03 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 177689
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 25
Number of Exceedances: 16
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 16 of 25 samples exceeded the water quality threshold for pH.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for municipal and domestic supply (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 6.5 nor raised above 8.3.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-01-03 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 177317
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 25
Number of Exceedances: 25
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 25 of 25 samples exceeded the water quality threshold for pH.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for cold fresh water habitat (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 7.0 nor raised above 8.5.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-01-03 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 177838
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Non-Contact Recreation
 
Number of Samples: 25
Number of Exceedances: 16
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 16 of 25 samples exceeded the water quality threshold for pH.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 6.5 nor raised above 8.3.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-01-03 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 177305
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 24
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 24 samples exceeded the water quality threshold for pH.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for municipal and domestic supply (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 6.5 nor raised above 8.3.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-01-03 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 178864
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 24
Number of Exceedances: 10
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 10 of 24 samples exceeded the water quality threshold for pH.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for warm fresh water habitat (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 7.0 nor raised above 8.5.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-01-03 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 52902
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 5
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 5 samples exceed the criterion for pH.
Data Reference: Data from Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program, Jan. 2007-Jul. 2009
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The pH value shall not be depressed below 7.0 or raised above 8.5 (Basin Plan).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CARBLR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 3/5/2007-7/10/2007.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: Data was collected following the Quality Assurance Project Plan for Elkhorn Slough National Estuarine Research Reserve's Volunteer Monthly Water Quality Program. Replicate data were identified in data and were qualified by RB Central Coast Water Board S
QAPP Information Reference(s): Quality Assurance Project Plan, Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program. May 15, 2009, Ver.1.3
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26694
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 642
Number of Exceedances: 71
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for Carneros Creek to determine beneficial use support and results are as follows: 71 of 642 samples exceed the criterion for pH.
Data Reference: Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A
  Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: For waters not mentioned by a specific beneficial use, the pH value shall not be depressed below 7.0 or raised above 8.5.
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 9 monitoring sites [ CA-COR - Carneros Creek at Corey Rd., CA-SMC - Carneros Creek at San Miguel Canyon Rd., CA-KIR - Carneros Creek at Kirby Park, CA-BIR - Carneros Creek at Bend in road,
Temporal Representation: Data was collected over the time period 10/4/2000-2/11/2007.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26665
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 9
Number of Exceedances: 4
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed CCAMP Salinas (Salinas) data for Carneros Creek to determine beneficial use support and results are as follows: 4 of 9 samples exceed the criterion for pH.
Data Reference: Final Data File used for assessment: CCAMP Salinas Toxicity data
  Final Data File used for assessment: CCAMP Water Quality Data_file1
  Final Data File used for assessment: CCAMP Water Quality Data_file2
  Final Data File used for assessment: CCAMP Water Quality Data_file3
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: For waters not mentioned by a specific beneficial use, the pH value shall not be depressed below 7.0 or raised above 8.5.
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road].
Temporal Representation: Data was collected over the time period 1/23/2006-12/18/2006. Salinas watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26707
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for Carneros Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for pH.
Data Reference: Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: For waters not mentioned by a specific beneficial use, the pH value shall not be depressed below 7.0 or raised above 8.5.
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306-CARNE-1 - Carneros Creek]
Temporal Representation: Data was collected on a single day 5/1/2004. Coastal Watershed Council Snapshot Day Monitoring is conducted annually.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 49732
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 2
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 2 of 2 samples exceed the criterion for pH.
Data Reference: Salinas Rotation field data 2007
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The pH value shall not be depressed below 7.0 or raised above 8.5 (Basin Plan).
Objective/Criterion Reference: Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 1/16/2007-2/20/2007.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate.
QAPP Information Reference(s): Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26682
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 180
Number of Exceedances: 70
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed National Estuarine Research Reserve Monitoring Program (R3_ESNERR) data for Carneros Creek to determine beneficial use support and results are as follows: 70 of 180 samples exceed the criterion for pH.
Data Reference: Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Field Data from 2006
  Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Water Quality Data from 2006
  Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Water Quality Data from 94-04
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: For waters not mentioned by a specific beneficial use, the pH value shall not be depressed below 7.0 or raised above 8.5.
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CARBLR - Carneros Creek]
Temporal Representation: Data was collected over the time period 1/20/1990-10/10/2006.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: QAPP was adopted for work conducted since 2005. Prior to 2005 no QAPP was in place and data entry was completed by volunteers. Multiple errors were identified in data and were flagged by RB staff (in communication with Elkhorn Slough Program staff) prior
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 49739
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 2
Number of Exceedances: 2
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 2 of 2 samples exceed the criterion for pH.
Data Reference: Salinas Rotation field data 2007
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The pH value shall not be depressed below 6.5 or raised above 8.3 (Basin Plan).
Objective/Criterion Reference: Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 1/16/2007-2/20/2007.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate.
QAPP Information Reference(s): Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26708
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for Carneros Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for pH.
Data Reference: Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin, Section II.A.2. Municipal and Domestic Supply Objectives, Section II.A.2.a states the following: The pH value shall neither be depressed below 6.5 or raised above 8.3.
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306-CARNE-1 - Carneros Creek]
Temporal Representation: Data was collected on a single day 5/1/2004. Coastal Watershed Council Snapshot Day Monitoring is conducted annually.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26684
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 180
Number of Exceedances: 59
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed National Estuarine Research Reserve Monitoring Program (R3_ESNERR) data for Carneros Creek to determine beneficial use support and results are as follows: 59 of 180 samples exceed the criterion for pH.
Data Reference: Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Field Data from 2006
  Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Water Quality Data from 2006
  Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Water Quality Data from 94-04
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin, Section II.A.2. Municipal and Domestic Supply Objectives, Section II.A.2.a states the following: The pH value shall neither be depressed below 6.5 or raised above 8.3.
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CARBLR - Carneros Creek]
Temporal Representation: Data was collected over the time period 1/20/1990-10/10/2006.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: QAPP was adopted for work conducted since 2005. Prior to 2005 no QAPP was in place and data entry was completed by volunteers. Multiple errors were identified in data and were flagged by RB staff (in communication with Elkhorn Slough Program staff) prior
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26666
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 9
Number of Exceedances: 4
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed CCAMP Salinas (Salinas) data for Carneros Creek to determine beneficial use support and results are as follows: 4 of 9 samples exceed the criterion for pH.
Data Reference: Final Data File used for assessment: CCAMP Salinas Toxicity data
  Final Data File used for assessment: CCAMP Water Quality Data_file1
  Final Data File used for assessment: CCAMP Water Quality Data_file2
  Final Data File used for assessment: CCAMP Water Quality Data_file3
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin, Section II.A.2. Municipal and Domestic Supply Objectives, Section II.A.2.a states the following: The pH value shall neither be depressed below 6.5 or raised above 8.3.
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road].
Temporal Representation: Data was collected over the time period 1/23/2006-12/18/2006. Salinas watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 52915
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 5
Number of Exceedances: 3
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 3 of 5 samples exceed the criterion for pH.
Data Reference: Data from Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program, Jan. 2007-Jul. 2009
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The pH value shall not be depressed below 6.5 or raised above 8.3 (Basin Plan).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CARBLR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 3/5/2007-7/10/2007.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: Data was collected following the Quality Assurance Project Plan for Elkhorn Slough National Estuarine Research Reserve's Volunteer Monthly Water Quality Program. Replicate data were identified in data and were qualified by RB Central Coast Water Board S
QAPP Information Reference(s): Quality Assurance Project Plan, Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program. May 15, 2009, Ver.1.3
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26695
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 642
Number of Exceedances: 109
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for Carneros Creek to determine beneficial use support and results are as follows: 109 of 642 samples exceed the criterion for pH.
Data Reference: Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A
  Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin, Section II.A.2. Municipal and Domestic Supply Objectives, Section II.A.2.a states the following: The pH value shall neither be depressed below 6.5 or raised above 8.3.
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 9 monitoring sites [ CA-COR - Carneros Creek at Corey Rd., CA-SMC - Carneros Creek at San Miguel Canyon Rd., CA-KIR - Carneros Creek at Kirby Park, CA-BIR - Carneros Creek at Bend in road,
Temporal Representation: Data was collected over the time period 10/4/2000-2/11/2007.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 49754
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Non-Contact Recreation
 
Number of Samples: 2
Number of Exceedances: 2
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 2 of 2 samples exceed the criterion for pH.
Data Reference: Salinas Rotation field data 2007
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The pH value shall neither be depressed below 6.5 nor raised above 8.3 (Basin Plan).
Objective/Criterion Reference: Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 1/16/2007-2/20/2007.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate.
QAPP Information Reference(s): Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26710
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Non-Contact Recreation
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for Carneros Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for pH.
Data Reference: Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3.
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306-CARNE-1 - Carneros Creek]
Temporal Representation: Data was collected on a single day 5/1/2004. Coastal Watershed Council Snapshot Day Monitoring is conducted annually.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 52945
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Non-Contact Recreation
 
Number of Samples: 5
Number of Exceedances: 3
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 3 of 5 samples exceed the criterion for pH.
Data Reference: Data from Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program, Jan. 2007-Jul. 2009
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The pH value shall neither be depressed below 6.5 nor raised above 8.3 (Basin Plan).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CARBLR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 3/5/2007-7/10/2007.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: Data was collected following the Quality Assurance Project Plan for Elkhorn Slough National Estuarine Research Reserve's Volunteer Monthly Water Quality Program. Replicate data were identified in data and were qualified by RB Central Coast Water Board S
QAPP Information Reference(s): Quality Assurance Project Plan, Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program. May 15, 2009, Ver.1.3
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26668
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Non-Contact Recreation
 
Number of Samples: 9
Number of Exceedances: 4
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed CCAMP Salinas (Salinas) data for Carneros Creek to determine beneficial use support and results are as follows: 4 of 9 samples exceed the criterion for pH.
Data Reference: Final Data File used for assessment: CCAMP Salinas Toxicity data
  Final Data File used for assessment: CCAMP Water Quality Data_file1
  Final Data File used for assessment: CCAMP Water Quality Data_file2
  Final Data File used for assessment: CCAMP Water Quality Data_file3
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3.
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 1/23/2006-12/18/2006. Salinas watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rot
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26697
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Non-Contact Recreation
 
Number of Samples: 642
Number of Exceedances: 109
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for Carneros Creek to determine beneficial use support and results are as follows: 109 of 642 samples exceed the criterion for pH.
Data Reference: Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A
  Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3.
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 9 monitoring sites [ CA-COR - Carneros Creek at Corey Rd., CA-SMC - Carneros Creek at San Miguel Canyon Rd., CA-KIR - Carneros Creek at Kirby Park, CA-BIR - Carneros Creek at Bend in road,
Temporal Representation: Data was collected over the time period 10/4/2000-2/11/2007.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26686
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Non-Contact Recreation
 
Number of Samples: 180
Number of Exceedances: 59
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed National Estuarine Research Reserve Monitoring Program (R3_ESNERR) data for Carneros Creek to determine beneficial use support and results are as follows: 59 of 180 samples exceed the criterion for pH.
Data Reference: Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Field Data from 2006
  Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Water Quality Data from 2006
  Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Water Quality Data from 94-04
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3.
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CARBLR - Carneros Creek]
Temporal Representation: Data was collected over the time period 1/20/1990-10/10/2006.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: QAPP was adopted for work conducted since 2005. Prior to 2005 no QAPP was in place and data entry was completed by volunteers. Multiple errors were identified in data and were flagged by RB staff (in communication with Elkhorn Slough Program staff) prior
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 52938
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 5
Number of Exceedances: 3
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 3 of 5 samples exceed the criterion for pH.
Data Reference: Data from Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program, Jan. 2007-Jul. 2009
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The pH value shall neither be depressed below 6.5 nor raised above 8.3 (Basin Plan).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CARBLR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 3/5/2007-7/10/2007.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: Data was collected following the Quality Assurance Project Plan for Elkhorn Slough National Estuarine Research Reserve's Volunteer Monthly Water Quality Program. Replicate data were identified in data and were qualified by RB Central Coast Water Board S
QAPP Information Reference(s): Quality Assurance Project Plan, Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program. May 15, 2009, Ver.1.3
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 49742
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 2
Number of Exceedances: 2
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 2 of 2 samples exceed the criterion for pH.
Data Reference: Salinas Rotation field data 2007
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The pH value shall neither be depressed below 6.5 nor raised above 8.3 (Basin Plan).
Objective/Criterion Reference: Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 1/16/2007-2/20/2007.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate.
QAPP Information Reference(s): Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26685
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 180
Number of Exceedances: 59
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed National Estuarine Research Reserve Monitoring Program (R3_ESNERR) data for Carneros Creek to determine beneficial use support and results are as follows: 59 of 180 samples exceed the criterion for pH.
Data Reference: Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Field Data from 2006
  Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Water Quality Data from 2006
  Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Water Quality Data from 94-04
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for water contact recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3.
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CARBLR - Carneros Creek]
Temporal Representation: Data was collected over the time period 1/20/1990-10/10/2006.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: QAPP was adopted for work conducted since 2005. Prior to 2005 no QAPP was in place and data entry was completed by volunteers. Multiple errors were identified in data and were flagged by RB staff (in communication with Elkhorn Slough Program staff) prior
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26667
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 9
Number of Exceedances: 4
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed CCAMP Salinas (Salinas) data for Carneros Creek to determine beneficial use support and results are as follows: 4 of 9 samples exceed the criterion for pH.
Data Reference: Final Data File used for assessment: CCAMP Salinas Toxicity data
  Final Data File used for assessment: CCAMP Water Quality Data_file1
  Final Data File used for assessment: CCAMP Water Quality Data_file2
  Final Data File used for assessment: CCAMP Water Quality Data_file3
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for water contact recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3.
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road].
Temporal Representation: Data was collected over the time period 1/23/2006-12/18/2006. Salinas watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26696
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 642
Number of Exceedances: 109
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for Carneros Creek to determine beneficial use support and results are as follows: 109 of 642 samples exceed the criterion for pH.
Data Reference: Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A
  Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for water contact recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3.
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 9 monitoring sites [ CA-COR - Carneros Creek at Corey Rd., CA-SMC - Carneros Creek at San Miguel Canyon Rd., CA-KIR - Carneros Creek at Kirby Park, CA-BIR - Carneros Creek at Bend in road,
Temporal Representation: Data was collected over the time period 10/4/2000-2/11/2007.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 113608, pH
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26709
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for Carneros Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for pH.
Data Reference: Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Water Quality Control Plan, Central Coast Basin objective for water contact recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3.
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306-CARNE-1 - Carneros Creek]
Temporal Representation: Data was collected on a single day 5/1/2004. Coastal Watershed Council Snapshot Day Monitoring is conducted annually.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data.
QAPP Information Reference(s):
 
 
DECISION ID
113620
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Aldicarb
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
 
 
Line of Evidence (LOE) for Decision ID 113620, Aldicarb
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 157228
 
Pollutant: Aldicarb
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Aldicarb.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Aldicarb is the USEPA Aquatic Life Benchmark of 0.46 ug/L for a fish (chronic).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
Line of Evidence (LOE) for Decision ID 113620, Aldicarb
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 157210
 
Pollutant: Aldicarb
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Aldicarb.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Aldicarb is the USEPA Aquatic Life Benchmark of 0.46 ug/L for a fish (chronic).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
 
DECISION ID
113621
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Aldrin
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: This pollutant is being considered for placement on the section 303(d) List under sections 3.1 of the Listing Policy. Under sections 3.1, one line of evidence is necessary to assess listing status in water samples.

Sixteen lines of evidence are available in the administrative record to assess this pollutant.

Zero of 12 water samples exceeded the evaluation guideline applied to protect aquatic life beneficial uses (CTR 2000).

Zero of 0 water samples exceeded the evaluation guideline applied to protect commercial or recreational collection beneficial uses (CTR 2000). Although a total of 12 samples were collected, 12 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Zero of 0 water samples exceeded the evaluation guideline applied to protect drinking water (CTR 2000). Although a total of 12 samples were collected, 12 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) List in the Water Quality Limited Segments category. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. No samples exceeded the evaluation guidelines, and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation:
 
 
Line of Evidence (LOE) for Decision ID 113621, Aldrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 157004
 
Pollutant: Aldrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Aldrin.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion maximum concentration to protect aquatic life in freshwater is 3 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113621, Aldrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 157000
 
Pollutant: Aldrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Aldrin.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion maximum concentration to protect aquatic life in freshwater is 3 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113621, Aldrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 157046
 
Pollutant: Aldrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Aldrin. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Aldrin criteria for the protection of human health from the consumption of water and organisms is 0.00013 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113621, Aldrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 156999
 
Pollutant: Aldrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Aldrin.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion maximum concentration to protect aquatic life in freshwater is 3 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113621, Aldrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 157049
 
Pollutant: Aldrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Aldrin.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion maximum concentration to protect aquatic life in freshwater is 3 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113621, Aldrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 157325
 
Pollutant: Aldrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Aldrin. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.00014 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113621, Aldrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 157349
 
Pollutant: Aldrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Aldrin.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion maximum concentration to protect aquatic life in freshwater is 3 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113621, Aldrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 157324
 
Pollutant: Aldrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Aldrin. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Aldrin criteria for the protection of human health from the consumption of water and organisms is 0.00013 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113621, Aldrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 157347
 
Pollutant: Aldrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Aldrin. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.00014 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113621, Aldrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 157026
 
Pollutant: Aldrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Aldrin. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.00014 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113621, Aldrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 157002
 
Pollutant: Aldrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Aldrin. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.00014 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113621, Aldrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 157346
 
Pollutant: Aldrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Aldrin. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Aldrin criteria for the protection of human health from the consumption of water and organisms is 0.00013 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113621, Aldrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 157345
 
Pollutant: Aldrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Aldrin.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion maximum concentration to protect aquatic life in freshwater is 3 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113621, Aldrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 157003
 
Pollutant: Aldrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Aldrin. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Aldrin criteria for the protection of human health from the consumption of water and organisms is 0.00013 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113621, Aldrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 157047
 
Pollutant: Aldrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Aldrin.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion maximum concentration to protect aquatic life in freshwater is 3 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113621, Aldrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 157025
 
Pollutant: Aldrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Aldrin.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion maximum concentration to protect aquatic life in freshwater is 3 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
 
DECISION ID
113597
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Azinphos-methyl (Guthion)
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
 
 
Line of Evidence (LOE) for Decision ID 113597, Azinphos-methyl (Guthion)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 159034
 
Pollutant: Azinphos-methyl (Guthion)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The Criterion Continuous Concentration for freshwater aquatic life is 0.01 ug/L (National Recommended Water Quality Criteria, EPA 2016)
Guideline Reference: National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113597, Azinphos-methyl (Guthion)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 158593
 
Pollutant: Azinphos-methyl (Guthion)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The Criterion Continuous Concentration for freshwater aquatic life is 0.01 ug/L (National Recommended Water Quality Criteria, EPA 2016)
Guideline Reference: National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113597, Azinphos-methyl (Guthion)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 158761
 
Pollutant: Azinphos-methyl (Guthion)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The Criterion Continuous Concentration for freshwater aquatic life is 0.01 ug/L (National Recommended Water Quality Criteria, EPA 2016)
Guideline Reference: National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113597, Azinphos-methyl (Guthion)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 158762
 
Pollutant: Azinphos-methyl (Guthion)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The Criterion Continuous Concentration for freshwater aquatic life is 0.01 ug/L (National Recommended Water Quality Criteria, EPA 2016)
Guideline Reference: National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113597, Azinphos-methyl (Guthion)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 158530
 
Pollutant: Azinphos-methyl (Guthion)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The Criterion Continuous Concentration for freshwater aquatic life is 0.01 ug/L (National Recommended Water Quality Criteria, EPA 2016)
Guideline Reference: National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113597, Azinphos-methyl (Guthion)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 158639
 
Pollutant: Azinphos-methyl (Guthion)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The Criterion Continuous Concentration for freshwater aquatic life is 0.01 ug/L (National Recommended Water Quality Criteria, EPA 2016)
Guideline Reference: National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113597, Azinphos-methyl (Guthion)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 158704
 
Pollutant: Azinphos-methyl (Guthion)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The Criterion Continuous Concentration for freshwater aquatic life is 0.01 ug/L (National Recommended Water Quality Criteria, EPA 2016)
Guideline Reference: National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113597, Azinphos-methyl (Guthion)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 158721
 
Pollutant: Azinphos-methyl (Guthion)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The Criterion Continuous Concentration for freshwater aquatic life is 0.01 ug/L (National Recommended Water Quality Criteria, EPA 2016)
Guideline Reference: National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
 
DECISION ID
113625
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Bensulide
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: This pollutant is being considered for placement on the Clean Water Act (CWA) section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

A total of two lines of evidence are available in the administrative record to assess this pollutant. A total of zero of one sample exceeds the evaluation guideline for the cold freshwater habitat beneficial use and zero of one sample exceeds the evaluation guideline for the warm freshwater habitat beneficial use. The readily available data and information are insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. A total of zero of one sample exceeds the evaluation guideline for the cold freshwater habitat beneficial use and zero of one sample exceeds the evaluation guideline for the warm freshwater habitat beneficial use and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
 
 
Line of Evidence (LOE) for Decision ID 113625, Bensulide
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 159163
 
Pollutant: Bensulide
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Bensulide.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Bensulide is the USEPA Aquatic Life Benchmark of 11 ug/L for an invertebrate (chronic).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
Line of Evidence (LOE) for Decision ID 113625, Bensulide
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 158956
 
Pollutant: Bensulide
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Bensulide.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Bensulide is the USEPA Aquatic Life Benchmark of 11 ug/L for an invertebrate (chronic).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
 
DECISION ID
113583
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Carbaryl
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
 
 
Line of Evidence (LOE) for Decision ID 113583, Carbaryl
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 160097
 
Pollutant: Carbaryl
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Carbaryl.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The USEPA drinking water health advisory for carbaryl is 40 ug/L.
Guideline Reference: 2018 Edition of the Drinking Water Standards and Health Advisories
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
Line of Evidence (LOE) for Decision ID 113583, Carbaryl
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 160666
 
Pollutant: Carbaryl
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Carbaryl.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The Criterion Continuous Concentration for freshwater aquatic life is 2.1 ug/L (National Recommended Water Quality Criteria, EPA 2016)
Guideline Reference: National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
Line of Evidence (LOE) for Decision ID 113583, Carbaryl
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 160198
 
Pollutant: Carbaryl
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Carbaryl.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The Criterion Continuous Concentration for freshwater aquatic life is 2.1 ug/L (National Recommended Water Quality Criteria, EPA 2016)
Guideline Reference: National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
 
DECISION ID
113584
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Carbofuran
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
 
 
Line of Evidence (LOE) for Decision ID 113584, Carbofuran
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 160603
 
Pollutant: Carbofuran
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Carbofuran.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Carbofuran is the USEPA Aquatic Life Benchmark of 0.75 ug/L for an invertibrate (chronic).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
Line of Evidence (LOE) for Decision ID 113584, Carbofuran
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 160510
 
Pollutant: Carbofuran
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Carbofuran.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Carbofuran is the USEPA Aquatic Life Benchmark of 0.75 ug/L for an invertibrate (chronic).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
Line of Evidence (LOE) for Decision ID 113584, Carbofuran
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 160604
 
Pollutant: Carbofuran
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Carbofuran.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All inland surface waters, enclosed bays, and estuaries shall not contain concentrations of organic chemicals in excess of the maximum contaminant levels for primary drinking water standards specified in California Code of Regulations, Title 22, Division 4, Chapter 15, Article 5.5, Section 64444, Table 64444-A.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The California Maximum Contaminant Level for Carbofuran is 0.018 mg/L (California Code of Regulations, Title 22).
Guideline Reference: California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
 
DECISION ID
113585
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Chlordane
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

Sixteen lines of evidence (LOEs) are available in the administrative record to assess this pollutant.

Zero of the zero water samples exceeded the evaluation guideline for Cold and Warm Freshwater Habitats applied to protect for the aquatic life beneficial use. Though twelve sample(s) were collected (three samples each taken at four separate stations), all results had to be thrown out due to quantitation issues.

Zero of zero water samples exceeded the evaluation guideline applied to protect for the commercial beneficial use, though twelve sample(s) were collected (three samples each taken at four separate stations), all results had to be thrown out due to quantitation issues.

Zero of zero water samples exceeded the evaluation guideline applied to protect for the municipal and domestic supply beneficial use, though twelve sample(s) were collected (three samples each taken at four separate stations), all results had to be thrown out due to quantitation issues.

This sample size is insufficient to determine an applicable beneficial use support rating with the power and confidence of the Listing Policy. In accordance with Table 3.1 of the Listing Policy, a minimum of 16 samples is needed to determine if a beneficial use is fully supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported.

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. Zero water samples exceed the evaluation guidelines and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
 
 
Line of Evidence (LOE) for Decision ID 113585, Chlordane
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 156150
 
Pollutant: Chlordane
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordanes. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.0043 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113585, Chlordane
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 156142
 
Pollutant: Chlordane
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordanes. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.00059 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113585, Chlordane
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 156152
 
Pollutant: Chlordane
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordanes. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The total chlordane (cis plus trans) criteria for the protection of human health from the consumption of water and organisms is 0.00057 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113585, Chlordane
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 156143
 
Pollutant: Chlordane
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordanes. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.0043 ug/L A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113585, Chlordane
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 156157
 
Pollutant: Chlordane
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordanes. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The total chlordane (cis plus trans) criteria for the protection of human health from the consumption of water and organisms is 0.00057 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113585, Chlordane
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 156149
 
Pollutant: Chlordane
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordanes. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.0043 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113585, Chlordane
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 156134
 
Pollutant: Chlordane
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordanes. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.0043 ug/L A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113585, Chlordane
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 156135
 
Pollutant: Chlordane
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordanes. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.0043 ug/L A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113585, Chlordane
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 156155
 
Pollutant: Chlordane
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordanes. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The total chlordane (cis plus trans) criteria for the protection of human health from the consumption of water and organisms is 0.00057 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113585, Chlordane
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 156159
 
Pollutant: Chlordane
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordanes. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The total chlordane (cis plus trans) criteria for the protection of human health from the consumption of water and organisms is 0.00057 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113585, Chlordane
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 156137
 
Pollutant: Chlordane
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordanes. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.0043 ug/L A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113585, Chlordane
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 156139
 
Pollutant: Chlordane
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordanes. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.0043 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113585, Chlordane
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 156144
 
Pollutant: Chlordane
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordanes. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.00059 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113585, Chlordane
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 156148
 
Pollutant: Chlordane
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordanes. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.00059 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113585, Chlordane
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 156151
 
Pollutant: Chlordane
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordanes. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.0043 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113585, Chlordane
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 156147
 
Pollutant: Chlordane
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordanes. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.00059 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
 
DECISION ID
130038
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: DDD (Dichlorodiphenyldichloroethane)
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: This pollutant is being considered for placement on the section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

Eight lines of evidence are available in the administrative record to assess this pollutant.

Eight LOEs summarize water samples. Twelve samples were collected and compared to the DDD evaluation guidelines (California Toxics Rule, 2000), set to protect for commercial or recreational collection of fish, shellfish, or other organisms, and municipal beneficial uses. However, all samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. No water samples are included in the assessment because laboratory data reporting limit(s) were above the water quality threshold. This does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation:
 
 
Line of Evidence (LOE) for Decision ID 130038, DDD (Dichlorodiphenyldichloroethane)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163634
 
Pollutant: DDD (Dichlorodiphenyldichloroethane)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The 4,4'-DDD criteria for the protection of human health from the consumption of water and organisms is 0.00083 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 130038, DDD (Dichlorodiphenyldichloroethane)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163629
 
Pollutant: DDD (Dichlorodiphenyldichloroethane)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption of 4,4'-DDD is 0.00084 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 130038, DDD (Dichlorodiphenyldichloroethane)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163654
 
Pollutant: DDD (Dichlorodiphenyldichloroethane)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption of 4,4'-DDD is 0.00084 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 130038, DDD (Dichlorodiphenyldichloroethane)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163632
 
Pollutant: DDD (Dichlorodiphenyldichloroethane)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The 4,4'-DDD criteria for the protection of human health from the consumption of water and organisms is 0.00083 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 130038, DDD (Dichlorodiphenyldichloroethane)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163655
 
Pollutant: DDD (Dichlorodiphenyldichloroethane)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The 4,4'-DDD criteria for the protection of human health from the consumption of water and organisms is 0.00083 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 130038, DDD (Dichlorodiphenyldichloroethane)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163633
 
Pollutant: DDD (Dichlorodiphenyldichloroethane)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The 4,4'-DDD criteria for the protection of human health from the consumption of water and organisms is 0.00083 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 130038, DDD (Dichlorodiphenyldichloroethane)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163610
 
Pollutant: DDD (Dichlorodiphenyldichloroethane)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption of 4,4'-DDD is 0.00084 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 130038, DDD (Dichlorodiphenyldichloroethane)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163652
 
Pollutant: DDD (Dichlorodiphenyldichloroethane)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption of 4,4'-DDD is 0.00084 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
 
DECISION ID
129584
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: DDT (Dichlorodiphenyltrichloroethane)
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: This pollutant is being considered for placement on the section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

Twelve lines of evidence are available in the administrative record to assess this pollutant.

Twelve LOEs summarize water samples. One of one water samples exceed the DDT evaluation guideline (California Toxics Rule, 2000), set to protect for aquatic life beneficial uses. One of one water samples exceed the DDT evaluation guideline (California Toxics Rule, 2000), set to protect for the municipal beneficial uses. Note that multiple samples were not used because the laboratory data reporting limits were above the water quality threshold and therefore could not be quantified with the level of certainty required by the listing policy.

After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. One of one water sample exceeds the evaluation guidelines for aquatic life and one of one water sample exceeds the evaluation guidelines for the municipal beneficial use. This does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation:
 
 
Line of Evidence (LOE) for Decision ID 129584, DDT (Dichlorodiphenyltrichloroethane)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163782
 
Pollutant: DDT (Dichlorodiphenyltrichloroethane)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The 4,4'-DDT criteria for the protection of human health from the consumption of water and organisms is 0.00059 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 129584, DDT (Dichlorodiphenyltrichloroethane)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163778
 
Pollutant: DDT (Dichlorodiphenyltrichloroethane)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 1
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 1 of the 1 samples exceeded the water quality threshold for DDT(p,p'). Although a total of 3 samples were collected, 2 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The 4,4'-DDT criteria for the protection of human health from the consumption of water and organisms is 0.00059 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 129584, DDT (Dichlorodiphenyltrichloroethane)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163741
 
Pollutant: DDT (Dichlorodiphenyltrichloroethane)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The 4,4'-DDT criterion continuous concentrations to protect aquatic life in freshwater is 0.001 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 129584, DDT (Dichlorodiphenyltrichloroethane)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163719
 
Pollutant: DDT (Dichlorodiphenyltrichloroethane)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The 4,4'-DDT criterion continuous concentrations to protect aquatic life in freshwater is 0.001 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 129584, DDT (Dichlorodiphenyltrichloroethane)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163721
 
Pollutant: DDT (Dichlorodiphenyltrichloroethane)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The 4,4'-DDT criterion continuous concentrations to protect aquatic life in freshwater is 0.001 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 129584, DDT (Dichlorodiphenyltrichloroethane)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163760
 
Pollutant: DDT (Dichlorodiphenyltrichloroethane)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 1 of the 1 samples exceeded the water quality threshold for DDT(p,p'). Although a total of 3 samples were collected, 2 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The 4,4'-DDT criterion continuous concentrations to protect aquatic life in freshwater is 0.001 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 129584, DDT (Dichlorodiphenyltrichloroethane)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163799
 
Pollutant: DDT (Dichlorodiphenyltrichloroethane)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The 4,4'-DDT criteria for the protection of human health from the consumption of water and organisms is 0.00059 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 129584, DDT (Dichlorodiphenyltrichloroethane)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163739
 
Pollutant: DDT (Dichlorodiphenyltrichloroethane)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 1 of the 1 samples exceeded the water quality threshold for DDT(p,p'). Although a total of 3 samples were collected, 2 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The 4,4'-DDT criterion continuous concentrations to protect aquatic life in freshwater is 0.001 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 129584, DDT (Dichlorodiphenyltrichloroethane)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163781
 
Pollutant: DDT (Dichlorodiphenyltrichloroethane)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The 4,4'-DDT criteria for the protection of human health from the consumption of water and organisms is 0.00059 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 129584, DDT (Dichlorodiphenyltrichloroethane)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163718
 
Pollutant: DDT (Dichlorodiphenyltrichloroethane)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The 4,4'-DDT criterion continuous concentrations to protect aquatic life in freshwater is 0.001 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 129584, DDT (Dichlorodiphenyltrichloroethane)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163757
 
Pollutant: DDT (Dichlorodiphenyltrichloroethane)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The 4,4'-DDT criterion continuous concentrations to protect aquatic life in freshwater is 0.001 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 129584, DDT (Dichlorodiphenyltrichloroethane)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163780
 
Pollutant: DDT (Dichlorodiphenyltrichloroethane)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The 4,4'-DDT criterion continuous concentrations to protect aquatic life in freshwater is 0.001 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
 
DECISION ID
113590
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Diazinon
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: This pollutant is being considered for placement on the section 303(d) List under sections 3.1 and 3.6 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

Eight lines of evidence are available in the administrative record to assess this pollutant. Zero of seven water samples exceeded the aquatic life evaluation guideline (Finlayson, 2004). This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported using table 3.1.

After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List because applicable water quality standards are not being exceeded.

This conclusion is based on the staff findings that:

1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.

2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.

3. Zero samples exceeded the water quality objectives. This does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy.

4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation:
 
 
Line of Evidence (LOE) for Decision ID 113590, Diazinon
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163511
 
Pollutant: Diazinon
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Diazinon. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The freshwater chronic value for diazinon is 0.1 ug/L, expressed as a continuous concentration (Finlayson, 2004).
Guideline Reference: Water quality for diazinon. Memorandum to J. Karkoski, Central Valley RWQCB. Rancho Cordova, CA: Pesticide Investigation Unit, CA Department of Fish and Game
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113590, Diazinon
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163771
 
Pollutant: Diazinon
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Diazinon. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The freshwater chronic value for diazinon is 0.1 ug/L, expressed as a continuous concentration (Finlayson, 2004).
Guideline Reference: Water quality for diazinon. Memorandum to J. Karkoski, Central Valley RWQCB. Rancho Cordova, CA: Pesticide Investigation Unit, CA Department of Fish and Game
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113590, Diazinon
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 164024
 
Pollutant: Diazinon
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Diazinon. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The freshwater chronic value for diazinon is 0.1 ug/L, expressed as a continuous concentration (Finlayson, 2004).
Guideline Reference: Water quality for diazinon. Memorandum to J. Karkoski, Central Valley RWQCB. Rancho Cordova, CA: Pesticide Investigation Unit, CA Department of Fish and Game
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113590, Diazinon
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163640
 
Pollutant: Diazinon
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Diazinon.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The freshwater chronic value for diazinon is 0.1 ug/L, expressed as a continuous concentration (Finlayson, 2004).
Guideline Reference: Water quality for diazinon. Memorandum to J. Karkoski, Central Valley RWQCB. Rancho Cordova, CA: Pesticide Investigation Unit, CA Department of Fish and Game
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
Line of Evidence (LOE) for Decision ID 113590, Diazinon
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163643
 
Pollutant: Diazinon
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Diazinon. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The freshwater chronic value for diazinon is 0.1 ug/L, expressed as a continuous concentration (Finlayson, 2004).
Guideline Reference: Water quality for diazinon. Memorandum to J. Karkoski, Central Valley RWQCB. Rancho Cordova, CA: Pesticide Investigation Unit, CA Department of Fish and Game
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113590, Diazinon
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163968
 
Pollutant: Diazinon
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Diazinon.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The freshwater chronic value for diazinon is 0.1 ug/L, expressed as a continuous concentration (Finlayson, 2004).
Guideline Reference: Water quality for diazinon. Memorandum to J. Karkoski, Central Valley RWQCB. Rancho Cordova, CA: Pesticide Investigation Unit, CA Department of Fish and Game
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
Line of Evidence (LOE) for Decision ID 113590, Diazinon
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 164196
 
Pollutant: Diazinon
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Diazinon. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The freshwater chronic value for diazinon is 0.1 ug/L, expressed as a continuous concentration (Finlayson, 2004).
Guideline Reference: Water quality for diazinon. Memorandum to J. Karkoski, Central Valley RWQCB. Rancho Cordova, CA: Pesticide Investigation Unit, CA Department of Fish and Game
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113590, Diazinon
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163555
 
Pollutant: Diazinon
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Diazinon. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The freshwater chronic value for diazinon is 0.1 ug/L, expressed as a continuous concentration (Finlayson, 2004).
Guideline Reference: Water quality for diazinon. Memorandum to J. Karkoski, Central Valley RWQCB. Rancho Cordova, CA: Pesticide Investigation Unit, CA Department of Fish and Game
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
 
DECISION ID
113591
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Dichlorvos
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
 
 
Line of Evidence (LOE) for Decision ID 113591, Dichlorvos
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 164336
 
Pollutant: Dichlorvos
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Dichlorvos.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The USEPA IRIS one-in-a-million cancer risk estimate from oral exposure for dichlorvos is 0.1 ug/L.
Guideline Reference: IRIS Database Calculations (summary)
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
Line of Evidence (LOE) for Decision ID 113591, Dichlorvos
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 164337
 
Pollutant: Dichlorvos
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dichlorvos. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Dichlorvos is the USEPA Aquatic Life Benchmark of 0.0058 ug/L for a invertebrate (acute).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-04-26 to 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
Line of Evidence (LOE) for Decision ID 113591, Dichlorvos
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 164332
 
Pollutant: Dichlorvos
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dichlorvos. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Dichlorvos is the USEPA Aquatic Life Benchmark of 0.0058 ug/L for a invertebrate (acute).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-04-26 to 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
 
DECISION ID
113592
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Dieldrin
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

Sixteen lines of evidence (LOEs) are available in the administrative record to assess this pollutant.

Zero of the eight water samples exceeded the evaluation guideline for Cold and Warm Freshwater Habitats applied to protect for the aquatic life beneficial use. Although twelve sample(s) were collected (three samples each taken at four separate stations), four sample results had to be thrown out due to quantitation issues.

Zero of zero water samples exceeded the evaluation guideline applied to protect for the commercial beneficial use, though twelve sample(s) were collected (three samples each taken at four separate stations), all results had to be thrown out due to quantitation issues.

Zero of zero water samples exceeded the evaluation guideline applied to protect for the municipal and domestic supply beneficial use, though twelve sample(s) were collected (three samples each taken at four separate stations), all results had to be thrown out due to quantitation issues.

This sample size is insufficient to determine an applicable beneficial use support rating with the power and confidence of the Listing Policy. In accordance with Table 3.1 of the Listing Policy, a minimum of 16 samples is needed to determine if a beneficial use is fully supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported.

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. Zero water samples exceed the evaluation guidelines and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List because it cannot be determined if applicable water quality standards are not being exceeded.
 
 
Line of Evidence (LOE) for Decision ID 113592, Dieldrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 164502
 
Pollutant: Dieldrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Dieldrin. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.056 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113592, Dieldrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 164468
 
Pollutant: Dieldrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.00014 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113592, Dieldrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 164446
 
Pollutant: Dieldrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Dieldrin. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.056 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113592, Dieldrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 164467
 
Pollutant: Dieldrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.00014 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113592, Dieldrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 164428
 
Pollutant: Dieldrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Dieldrin. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.056 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113592, Dieldrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 164449
 
Pollutant: Dieldrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Dieldrin. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.056 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113592, Dieldrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 164425
 
Pollutant: Dieldrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.00014 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113592, Dieldrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 164206
 
Pollutant: Dieldrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Dieldrin. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.056 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113592, Dieldrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 164464
 
Pollutant: Dieldrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Dieldrin. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.056 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113592, Dieldrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 164447
 
Pollutant: Dieldrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Dieldrin criteria for the protection of human health from the consumption of water and organisms is 0.00014 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113592, Dieldrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 164503
 
Pollutant: Dieldrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Dieldrin. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.056 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113592, Dieldrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 164484
 
Pollutant: Dieldrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Dieldrin criteria for the protection of human health from the consumption of water and organisms is 0.00014 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113592, Dieldrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 164483
 
Pollutant: Dieldrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Dieldrin. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.056 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113592, Dieldrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 164448
 
Pollutant: Dieldrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.00014 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113592, Dieldrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 164487
 
Pollutant: Dieldrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Dieldrin criteria for the protection of human health from the consumption of water and organisms is 0.00014 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113592, Dieldrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 164485
 
Pollutant: Dieldrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Dieldrin criteria for the protection of human health from the consumption of water and organisms is 0.00014 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
 
DECISION ID
113618
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Dimethoate
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
 
 
Line of Evidence (LOE) for Decision ID 113618, Dimethoate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 164687
 
Pollutant: Dimethoate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Dimethoate.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Dimethoate is the USEPA Aquatic Life Benchmark of 0.5 ug/L for a invertebrate (acute).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
Line of Evidence (LOE) for Decision ID 113618, Dimethoate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 164671
 
Pollutant: Dimethoate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Dimethoate.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Dimethoate is the USEPA Aquatic Life Benchmark of 0.5 ug/L for a invertebrate (acute).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
 
DECISION ID
113593
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Disulfoton
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: This decision was made by SWRCB staff.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
 
 
Line of Evidence (LOE) for Decision ID 113593, Disulfoton
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165204
 
Pollutant: Disulfoton
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Disulfoton. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The USEPA drinking water health advisory for disulfoton is 0.7 ug/L.
Guideline Reference: 2018 Edition of the Drinking Water Standards and Health Advisories
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113593, Disulfoton
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165091
 
Pollutant: Disulfoton
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Disulfoton. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Disulfoton is the USEPA Aquatic Life Benchmark of 0.01 ug/L for an invertebrate (chronic).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113593, Disulfoton
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165231
 
Pollutant: Disulfoton
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Disulfoton. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Disulfoton is the USEPA Aquatic Life Benchmark of 0.01 ug/L for an invertebrate (chronic).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113593, Disulfoton
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165255
 
Pollutant: Disulfoton
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Disulfoton. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The USEPA drinking water health advisory for disulfoton is 0.7 ug/L.
Guideline Reference: 2018 Edition of the Drinking Water Standards and Health Advisories
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113593, Disulfoton
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165179
 
Pollutant: Disulfoton
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Disulfoton. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The USEPA drinking water health advisory for disulfoton is 0.7 ug/L.
Guideline Reference: 2018 Edition of the Drinking Water Standards and Health Advisories
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113593, Disulfoton
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165159
 
Pollutant: Disulfoton
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Disulfoton. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Disulfoton is the USEPA Aquatic Life Benchmark of 0.01 ug/L for an invertebrate (chronic).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113593, Disulfoton
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165228
 
Pollutant: Disulfoton
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Disulfoton. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Disulfoton is the USEPA Aquatic Life Benchmark of 0.01 ug/L for an invertebrate (chronic).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113593, Disulfoton
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165038
 
Pollutant: Disulfoton
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Disulfoton. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Disulfoton is the USEPA Aquatic Life Benchmark of 0.01 ug/L for an invertebrate (chronic).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113593, Disulfoton
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165156
 
Pollutant: Disulfoton
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Disulfoton. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Disulfoton is the USEPA Aquatic Life Benchmark of 0.01 ug/L for an invertebrate (chronic).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113593, Disulfoton
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 164947
 
Pollutant: Disulfoton
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Disulfoton. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Disulfoton is the USEPA Aquatic Life Benchmark of 0.01 ug/L for an invertebrate (chronic).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113593, Disulfoton
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 164994
 
Pollutant: Disulfoton
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Disulfoton. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Disulfoton is the USEPA Aquatic Life Benchmark of 0.01 ug/L for an invertebrate (chronic).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113593, Disulfoton
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 164989
 
Pollutant: Disulfoton
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Disulfoton. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The USEPA drinking water health advisory for disulfoton is 0.7 ug/L.
Guideline Reference: 2018 Edition of the Drinking Water Standards and Health Advisories
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
 
DECISION ID
113594
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Endosulfan sulfate
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: This decision was made by SWRCB staff.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
 
 
Line of Evidence (LOE) for Decision ID 113594, Endosulfan sulfate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165525
 
Pollutant: Endosulfan sulfate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endosulfan Sulfate.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 240 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113594, Endosulfan sulfate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165526
 
Pollutant: Endosulfan sulfate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endosulfan Sulfate.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Endosulfan Sulfate criteria for endosulfan sulfate to protect human health for waters that include the designated use of MUN is 110 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113594, Endosulfan sulfate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165528
 
Pollutant: Endosulfan sulfate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endosulfan Sulfate.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Endosulfan Sulfate criteria for endosulfan sulfate to protect human health for waters that include the designated use of MUN is 110 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113594, Endosulfan sulfate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165503
 
Pollutant: Endosulfan sulfate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endosulfan Sulfate.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 240 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113594, Endosulfan sulfate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165505
 
Pollutant: Endosulfan sulfate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endosulfan Sulfate.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 240 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113594, Endosulfan sulfate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165527
 
Pollutant: Endosulfan sulfate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endosulfan Sulfate.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Endosulfan Sulfate criteria for endosulfan sulfate to protect human health for waters that include the designated use of MUN is 110 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113594, Endosulfan sulfate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165530
 
Pollutant: Endosulfan sulfate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endosulfan Sulfate.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Endosulfan Sulfate criteria for endosulfan sulfate to protect human health for waters that include the designated use of MUN is 110 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113594, Endosulfan sulfate
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165524
 
Pollutant: Endosulfan sulfate
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endosulfan Sulfate.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 240 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
 
DECISION ID
113595
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Endrin
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

Sixteen lines of evidence (LOEs) are available in the administrative record to assess this pollutant.

Zero of the eight water samples exceeded the evaluation guideline for Cold and Warm Freshwater Habitats applied to protect for the aquatic life beneficial use. Although twelve sample(s) were collected (three samples each taken at four separate stations), four sample results had to be thrown out due to quantitation issues.

Zero of 12 water samples exceeded the evaluation guideline applied to protect for the commercial beneficial use.

Zero of 12 water samples exceeded the evaluation guideline applied to protect for the municipal and domestic supply beneficial use.

This sample size is insufficient to determine an applicable beneficial use support rating with the power and confidence of the Listing Policy. In accordance with Table 3.1 of the Listing Policy, a minimum of 16 samples is needed to determine if a beneficial use is fully supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported.

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. Zero water samples exceed the evaluation guidelines and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List because it cannot be determined if applicable water quality standards are not being exceeded.
 
 
Line of Evidence (LOE) for Decision ID 113595, Endrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165552
 
Pollutant: Endrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endrin.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.81ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113595, Endrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165597
 
Pollutant: Endrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endrin. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.036 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113595, Endrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165549
 
Pollutant: Endrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endrin.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.81ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113595, Endrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165619
 
Pollutant: Endrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endrin. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.036 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113595, Endrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165594
 
Pollutant: Endrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endrin. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.036 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113595, Endrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165572
 
Pollutant: Endrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endrin. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.036 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113595, Endrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165548
 
Pollutant: Endrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endrin.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.81ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113595, Endrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165620
 
Pollutant: Endrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endrin.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.81ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113595, Endrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165269
 
Pollutant: Endrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endrin.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Endrin criteria for the protection of human health from the consumption of water and organisms is 0.76 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113595, Endrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165596
 
Pollutant: Endrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endrin. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.036 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113595, Endrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165618
 
Pollutant: Endrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endrin.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Endrin criteria for the protection of human health from the consumption of water and organisms is 0.76 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113595, Endrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165593
 
Pollutant: Endrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endrin. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.036 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113595, Endrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165574
 
Pollutant: Endrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endrin. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.036 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113595, Endrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165268
 
Pollutant: Endrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endrin. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.036 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113595, Endrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165270
 
Pollutant: Endrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endrin.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Endrin criteria for the protection of human health from the consumption of water and organisms is 0.76 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113595, Endrin
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165595
 
Pollutant: Endrin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endrin.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Endrin criteria for the protection of human health from the consumption of water and organisms is 0.76 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
 
DECISION ID
113613
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Ethion
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: This decision was made by SWRCB staff.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
 
 
Line of Evidence (LOE) for Decision ID 113613, Ethion
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165921
 
Pollutant: Ethion
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Ethion. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Ethion is the USEPA Aquatic Life Benchmark of 0.028 ug/L for invertebrates (acute).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113613, Ethion
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165643
 
Pollutant: Ethion
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Ethion. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Ethion is the USEPA Aquatic Life Benchmark of 0.028 ug/L for invertebrates (acute).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113613, Ethion
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165826
 
Pollutant: Ethion
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Ethion. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Ethion is the USEPA Aquatic Life Benchmark of 0.028 ug/L for invertebrates (acute).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113613, Ethion
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165706
 
Pollutant: Ethion
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Ethion. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Ethion is the USEPA Aquatic Life Benchmark of 0.028 ug/L for invertebrates (acute).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113613, Ethion
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165809
 
Pollutant: Ethion
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Ethion.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The USEPA expected safe lifetime exposure limit in drinking water for Ethion, calculated using the IRIS Reference Dose, is 3.5 ug/L. This was calculated assuming 70 kg body weight, 2 liters/day water consumption, 20% relative source contribution from drinking water, and 0.0005 mg/kg/day as the reference dose.
Guideline Reference: IRIS Reference Summary (Various Pollutants)
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113613, Ethion
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165703
 
Pollutant: Ethion
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Ethion.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The USEPA expected safe lifetime exposure limit in drinking water for Ethion, calculated using the IRIS Reference Dose, is 3.5 ug/L. This was calculated assuming 70 kg body weight, 2 liters/day water consumption, 20% relative source contribution from drinking water, and 0.0005 mg/kg/day as the reference dose.
Guideline Reference: IRIS Reference Summary (Various Pollutants)
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113613, Ethion
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165763
 
Pollutant: Ethion
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Ethion. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Ethion is the USEPA Aquatic Life Benchmark of 0.028 ug/L for invertebrates (acute).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113613, Ethion
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165937
 
Pollutant: Ethion
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Ethion.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The USEPA expected safe lifetime exposure limit in drinking water for Ethion, calculated using the IRIS Reference Dose, is 3.5 ug/L. This was calculated assuming 70 kg body weight, 2 liters/day water consumption, 20% relative source contribution from drinking water, and 0.0005 mg/kg/day as the reference dose.
Guideline Reference: IRIS Reference Summary (Various Pollutants)
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113613, Ethion
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165665
 
Pollutant: Ethion
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Ethion. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Ethion is the USEPA Aquatic Life Benchmark of 0.028 ug/L for invertebrates (acute).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113613, Ethion
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165870
 
Pollutant: Ethion
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Ethion. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Ethion is the USEPA Aquatic Life Benchmark of 0.028 ug/L for invertebrates (acute).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113613, Ethion
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165747
 
Pollutant: Ethion
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Ethion.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The USEPA expected safe lifetime exposure limit in drinking water for Ethion, calculated using the IRIS Reference Dose, is 3.5 ug/L. This was calculated assuming 70 kg body weight, 2 liters/day water consumption, 20% relative source contribution from drinking water, and 0.0005 mg/kg/day as the reference dose.
Guideline Reference: IRIS Reference Summary (Various Pollutants)
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113613, Ethion
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165641
 
Pollutant: Ethion
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Ethion. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Ethion is the USEPA Aquatic Life Benchmark of 0.028 ug/L for invertebrates (acute).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
 
DECISION ID
113619
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Ethoprop
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
 
 
Line of Evidence (LOE) for Decision ID 113619, Ethoprop
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 166292
 
Pollutant: Ethoprop
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Ethoprop.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Ethoprop is the USEPA Aquatic Life Benchmark of 0.8 ug/L for a invertebrate (acute).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
Line of Evidence (LOE) for Decision ID 113619, Ethoprop
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 166049
 
Pollutant: Ethoprop
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Ethoprop.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Ethoprop is the USEPA Aquatic Life Benchmark of 0.8 ug/L for a invertebrate (acute).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
 
DECISION ID
113598
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Heptachlor
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
 
 
Line of Evidence (LOE) for Decision ID 113598, Heptachlor
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167241
 
Pollutant: Heptachlor
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.0038 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113598, Heptachlor
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167262
 
Pollutant: Heptachlor
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Heptachlor criteria for the protection of human health from the consumption of water and organisms is 0.00021 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113598, Heptachlor
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167203
 
Pollutant: Heptachlor
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.00021 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113598, Heptachlor
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167223
 
Pollutant: Heptachlor
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Heptachlor criteria for the protection of human health from the consumption of water and organisms is 0.00021 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113598, Heptachlor
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167201
 
Pollutant: Heptachlor
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.0038 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113598, Heptachlor
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167182
 
Pollutant: Heptachlor
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.0038 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113598, Heptachlor
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167202
 
Pollutant: Heptachlor
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.00021 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113598, Heptachlor
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167181
 
Pollutant: Heptachlor
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.0038 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113598, Heptachlor
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167183
 
Pollutant: Heptachlor
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.0038 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113598, Heptachlor
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167219
 
Pollutant: Heptachlor
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.0038 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113598, Heptachlor
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167240
 
Pollutant: Heptachlor
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.0038 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113598, Heptachlor
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167263
 
Pollutant: Heptachlor
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Heptachlor criteria for the protection of human health from the consumption of water and organisms is 0.00021 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113598, Heptachlor
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167184
 
Pollutant: Heptachlor
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.00021 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113598, Heptachlor
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167199
 
Pollutant: Heptachlor
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.0038 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113598, Heptachlor
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167222
 
Pollutant: Heptachlor
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.00021 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113598, Heptachlor
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167242
 
Pollutant: Heptachlor
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Heptachlor criteria for the protection of human health from the consumption of water and organisms is 0.00021 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
 
DECISION ID
113599
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Heptachlor epoxide
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
 
 
Line of Evidence (LOE) for Decision ID 113599, Heptachlor epoxide
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 166998
 
Pollutant: Heptachlor epoxide
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Heptachlor Epoxide criteria for the protection of human health from the consumption of water and organisms is 0.00010 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113599, Heptachlor epoxide
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167016
 
Pollutant: Heptachlor epoxide
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.0038 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113599, Heptachlor epoxide
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167017
 
Pollutant: Heptachlor epoxide
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Heptachlor Epoxide criteria for the protection of human health from the consumption of water and organisms is 0.00010 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113599, Heptachlor epoxide
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167281
 
Pollutant: Heptachlor epoxide
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.00011 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113599, Heptachlor epoxide
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167278
 
Pollutant: Heptachlor epoxide
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.0038 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113599, Heptachlor epoxide
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167300
 
Pollutant: Heptachlor epoxide
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Heptachlor Epoxide criteria for the protection of human health from the consumption of water and organisms is 0.00010 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113599, Heptachlor epoxide
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167056
 
Pollutant: Heptachlor epoxide
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.00011 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113599, Heptachlor epoxide
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167036
 
Pollutant: Heptachlor epoxide
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.0038 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113599, Heptachlor epoxide
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167018
 
Pollutant: Heptachlor epoxide
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.0038 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113599, Heptachlor epoxide
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 166999
 
Pollutant: Heptachlor epoxide
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.0038 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113599, Heptachlor epoxide
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167280
 
Pollutant: Heptachlor epoxide
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.0038 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113599, Heptachlor epoxide
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167037
 
Pollutant: Heptachlor epoxide
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.0038 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113599, Heptachlor epoxide
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167299
 
Pollutant: Heptachlor epoxide
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Heptachlor Epoxide criteria for the protection of human health from the consumption of water and organisms is 0.00010 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113599, Heptachlor epoxide
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 166996
 
Pollutant: Heptachlor epoxide
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentrations to protect aquatic life in freshwater is 0.0038 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113599, Heptachlor epoxide
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167019
 
Pollutant: Heptachlor epoxide
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.00011 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113599, Heptachlor epoxide
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167020
 
Pollutant: Heptachlor epoxide
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.00011 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
 
DECISION ID
113623
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Hexachlorocyclohexane (HCH), alpha
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: This decision was made by SWRCB staff.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
 
 
Line of Evidence (LOE) for Decision ID 113623, Hexachlorocyclohexane (HCH), alpha
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167032
 
Pollutant: Hexachlorocyclohexane (HCH), alpha
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for HCH, alpha-. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The BHC, alpha criteria for the protection of human health from the consumption of water and organisms is 0.0039 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113623, Hexachlorocyclohexane (HCH), alpha
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 166755
 
Pollutant: Hexachlorocyclohexane (HCH), alpha
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for HCH, alpha-. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The BHC, alpha criteria for the protection of human health from the consumption of water and organisms is 0.0039 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113623, Hexachlorocyclohexane (HCH), alpha
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 166751
 
Pollutant: Hexachlorocyclohexane (HCH), alpha
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for HCH, alpha-. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The BHC, alpha criteria for the protection of human health from the consumption of water and organisms is 0.0039 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113623, Hexachlorocyclohexane (HCH), alpha
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167030
 
Pollutant: Hexachlorocyclohexane (HCH), alpha
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, alpha-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.013 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113623, Hexachlorocyclohexane (HCH), alpha
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 166736
 
Pollutant: Hexachlorocyclohexane (HCH), alpha
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, alpha-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.013 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113623, Hexachlorocyclohexane (HCH), alpha
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167033
 
Pollutant: Hexachlorocyclohexane (HCH), alpha
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for HCH, alpha-. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The BHC, alpha criteria for the protection of human health from the consumption of water and organisms is 0.0039 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113623, Hexachlorocyclohexane (HCH), alpha
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 166734
 
Pollutant: Hexachlorocyclohexane (HCH), alpha
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, alpha-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.013 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113623, Hexachlorocyclohexane (HCH), alpha
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 166753
 
Pollutant: Hexachlorocyclohexane (HCH), alpha
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, alpha-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.013 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
 
DECISION ID
113622
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Hexachlorocyclohexane (HCH), beta
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: This decision was made by SWRCB staff.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
 
 
Line of Evidence (LOE) for Decision ID 113622, Hexachlorocyclohexane (HCH), beta
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167075
 
Pollutant: Hexachlorocyclohexane (HCH), beta
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, beta-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.046 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113622, Hexachlorocyclohexane (HCH), beta
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167052
 
Pollutant: Hexachlorocyclohexane (HCH), beta
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, beta-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.046 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113622, Hexachlorocyclohexane (HCH), beta
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167076
 
Pollutant: Hexachlorocyclohexane (HCH), beta
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, beta-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The BHC, beta criteria for the protection of human health from the consumption of water and organisms is 0.014 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113622, Hexachlorocyclohexane (HCH), beta
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167074
 
Pollutant: Hexachlorocyclohexane (HCH), beta
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, beta-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The BHC, beta criteria for the protection of human health from the consumption of water and organisms is 0.014 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113622, Hexachlorocyclohexane (HCH), beta
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167055
 
Pollutant: Hexachlorocyclohexane (HCH), beta
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, beta-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.046 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113622, Hexachlorocyclohexane (HCH), beta
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167054
 
Pollutant: Hexachlorocyclohexane (HCH), beta
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, beta-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.046 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113622, Hexachlorocyclohexane (HCH), beta
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167078
 
Pollutant: Hexachlorocyclohexane (HCH), beta
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, beta-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The BHC, beta criteria for the protection of human health from the consumption of water and organisms is 0.014 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113622, Hexachlorocyclohexane (HCH), beta
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167077
 
Pollutant: Hexachlorocyclohexane (HCH), beta
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, beta-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The BHC, beta criteria for the protection of human health from the consumption of water and organisms is 0.014 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
 
DECISION ID
113614
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Imidacloprid
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
 
 
Line of Evidence (LOE) for Decision ID 113614, Imidacloprid
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167171
 
Pollutant: Imidacloprid
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Imidacloprid. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Aquatic life should not be affected unacceptably if the 4-day average concentration of Imidacloprid does not exceed 0.016 ug/L. (UC Davis Water Quality Criteria)
Guideline Reference: Water Quality Criteria Report for Imidacloprid Phase III: Application of the pesticide water quality criteria methodology. Department of Environmental Toxicology. University of California, Davis
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-04-26 to 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
Line of Evidence (LOE) for Decision ID 113614, Imidacloprid
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167211
 
Pollutant: Imidacloprid
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Imidacloprid. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Aquatic life should not be affected unacceptably if the 4-day average concentration of Imidacloprid does not exceed 0.016 ug/L. (UC Davis Water Quality Criteria)
Guideline Reference: Water Quality Criteria Report for Imidacloprid Phase III: Application of the pesticide water quality criteria methodology. Department of Environmental Toxicology. University of California, Davis
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-04-26 to 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
 
DECISION ID
113600
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

Sixteen lines of evidence (LOEs) are available in the administrative record to assess this pollutant.

Zero of the 12 water samples exceeded the evaluation guideline for Cold and Warm Freshwater Habitats applied to protect for the aquatic life beneficial use.

Zero of 12 water samples exceeded the evaluation guideline applied to protect for the commercial beneficial use,

Zero of eight water samples exceeded the evaluation guideline applied to protect for the municipal and domestic supply beneficial use. Although twelve sample(s) were collected (three samples each taken at four separate stations), four sample results had to be thrown out due to quantitation issues.

This sample size is insufficient to determine an applicable beneficial use support rating with the power and confidence of the Listing Policy. In accordance with Table 3.1 of the Listing Policy, a minimum of 16 samples is needed to determine if a beneficial use is fully supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported.

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. Zero water samples exceed the evaluation guidelines and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
 
 
Line of Evidence (LOE) for Decision ID 113600, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167160
 
Pollutant: Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, gamma-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The gamma-BHC (Lindane) criteria for the protection of human health from the consumption of water and organisms is 0.019 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113600, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167138
 
Pollutant: Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for HCH, gamma-.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.063 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113600, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167122
 
Pollutant: Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, gamma-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The gamma-BHC (Lindane) criteria for the protection of human health from the consumption of water and organisms is 0.019 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113600, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167141
 
Pollutant: Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for HCH, gamma-.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion maximum concentration to protect aquatic life in freshwater is 0.95 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113600, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167161
 
Pollutant: Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for HCH, gamma-.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion maximum concentration to protect aquatic life in freshwater is 0.95 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113600, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167121
 
Pollutant: Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for HCH, gamma-.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion maximum concentration to protect aquatic life in freshwater is 0.95 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113600, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167098
 
Pollutant: Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for HCH, gamma-.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.063 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113600, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167094
 
Pollutant: Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for HCH, gamma-.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion maximum concentration to protect aquatic life in freshwater is 0.95 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113600, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167099
 
Pollutant: Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for HCH, gamma-.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.063 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113600, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167096
 
Pollutant: Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for HCH, gamma-.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion maximum concentration to protect aquatic life in freshwater is 0.95 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113600, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167143
 
Pollutant: Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for HCH, gamma-.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion maximum concentration to protect aquatic life in freshwater is 0.95 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113600, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167118
 
Pollutant: Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for HCH, gamma-.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion maximum concentration to protect aquatic life in freshwater is 0.95 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113600, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167095
 
Pollutant: Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for HCH, gamma-.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.063 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113600, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167139
 
Pollutant: Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, gamma-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The gamma-BHC (Lindane) criteria for the protection of human health from the consumption of water and organisms is 0.019 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113600, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167117
 
Pollutant: Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for HCH, gamma-.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion maximum concentration to protect aquatic life in freshwater is 0.95 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113600, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 167159
 
Pollutant: Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, gamma-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The gamma-BHC (Lindane) criteria for the protection of human health from the consumption of water and organisms is 0.019 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
 
DECISION ID
113601
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Malathion
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: This pollutant is being considered for placement on the section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

Fifteen lines of evidence are available in the administrative record to assess this pollutant. Zero of zero samples exceed the evaluation guideline (Faria et al., 2010) applied to protect aquatic life beneficial uses. In this case, some samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. Zero of 13 samples exceed the evaluation guideline for drinking water (USEPA drinking water health advisory). These sample sizes are insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1.

After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List because applicable water quality standards are not being exceeded.

This conclusion is based on the staff findings that:

1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.

2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.

3. Zero samples exceeded the evaluation guidelines and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. These sample sizes are insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation:
 
 
Line of Evidence (LOE) for Decision ID 113601, Malathion
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 168957
 
Pollutant: Malathion
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Aquatic life should not be affected unacceptably if the four-day average concentration of malathion does not exceed 0.028 ug/L more than once every three years on the average (Faria et al., 2010).
Guideline Reference: Aquatic life water quality criteria derived via the UC Davis method: l. Organophosphate insecticides. Reviews of Environmental Contamination and Toxicology 216:1-48.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-04-26 to 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
Line of Evidence (LOE) for Decision ID 113601, Malathion
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 169083
 
Pollutant: Malathion
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Aquatic life should not be affected unacceptably if the four-day average concentration of malathion does not exceed 0.028 ug/L more than once every three years on the average (Faria et al., 2010).
Guideline Reference: Aquatic life water quality criteria derived via the UC Davis method: l. Organophosphate insecticides. Reviews of Environmental Contamination and Toxicology 216:1-48.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113601, Malathion
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 168985
 
Pollutant: Malathion
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Aquatic life should not be affected unacceptably if the four-day average concentration of malathion does not exceed 0.028 ug/L more than once every three years on the average (Faria et al., 2010).
Guideline Reference: Aquatic life water quality criteria derived via the UC Davis method: l. Organophosphate insecticides. Reviews of Environmental Contamination and Toxicology 216:1-48.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113601, Malathion
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 168526
 
Pollutant: Malathion
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Malathion.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The USEPA drinking water health advisory for malathion is 500 ug/L.
Guideline Reference: 2018 Edition of the Drinking Water Standards and Health Advisories
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113601, Malathion
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 168719
 
Pollutant: Malathion
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Aquatic life should not be affected unacceptably if the four-day average concentration of malathion does not exceed 0.028 ug/L more than once every three years on the average (Faria et al., 2010).
Guideline Reference: Aquatic life water quality criteria derived via the UC Davis method: l. Organophosphate insecticides. Reviews of Environmental Contamination and Toxicology 216:1-48.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-04-26 to 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
Line of Evidence (LOE) for Decision ID 113601, Malathion
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 168794
 
Pollutant: Malathion
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Malathion.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The USEPA drinking water health advisory for malathion is 500 ug/L.
Guideline Reference: 2018 Edition of the Drinking Water Standards and Health Advisories
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113601, Malathion
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 168679
 
Pollutant: Malathion
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Aquatic life should not be affected unacceptably if the four-day average concentration of malathion does not exceed 0.028 ug/L more than once every three years on the average (Faria et al., 2010).
Guideline Reference: Aquatic life water quality criteria derived via the UC Davis method: l. Organophosphate insecticides. Reviews of Environmental Contamination and Toxicology 216:1-48.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113601, Malathion
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 168882
 
Pollutant: Malathion
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Aquatic life should not be affected unacceptably if the four-day average concentration of malathion does not exceed 0.028 ug/L more than once every three years on the average (Faria et al., 2010).
Guideline Reference: Aquatic life water quality criteria derived via the UC Davis method: l. Organophosphate insecticides. Reviews of Environmental Contamination and Toxicology 216:1-48.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113601, Malathion
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 168593
 
Pollutant: Malathion
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Aquatic life should not be affected unacceptably if the four-day average concentration of malathion does not exceed 0.028 ug/L more than once every three years on the average (Faria et al., 2010).
Guideline Reference: Aquatic life water quality criteria derived via the UC Davis method: l. Organophosphate insecticides. Reviews of Environmental Contamination and Toxicology 216:1-48.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113601, Malathion
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 168658
 
Pollutant: Malathion
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Malathion.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The USEPA drinking water health advisory for malathion is 500 ug/L.
Guideline Reference: 2018 Edition of the Drinking Water Standards and Health Advisories
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
Line of Evidence (LOE) for Decision ID 113601, Malathion
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 168651
 
Pollutant: Malathion
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Aquatic life should not be affected unacceptably if the four-day average concentration of malathion does not exceed 0.028 ug/L more than once every three years on the average (Faria et al., 2010).
Guideline Reference: Aquatic life water quality criteria derived via the UC Davis method: l. Organophosphate insecticides. Reviews of Environmental Contamination and Toxicology 216:1-48.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113601, Malathion
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 168881
 
Pollutant: Malathion
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Malathion.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The USEPA drinking water health advisory for malathion is 500 ug/L.
Guideline Reference: 2018 Edition of the Drinking Water Standards and Health Advisories
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113601, Malathion
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 168720
 
Pollutant: Malathion
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Aquatic life should not be affected unacceptably if the four-day average concentration of malathion does not exceed 0.028 ug/L more than once every three years on the average (Faria et al., 2010).
Guideline Reference: Aquatic life water quality criteria derived via the UC Davis method: l. Organophosphate insecticides. Reviews of Environmental Contamination and Toxicology 216:1-48.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113601, Malathion
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 168888
 
Pollutant: Malathion
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Malathion.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The USEPA drinking water health advisory for malathion is 500 ug/L.
Guideline Reference: 2018 Edition of the Drinking Water Standards and Health Advisories
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113601, Malathion
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 168401
 
Pollutant: Malathion
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Aquatic life should not be affected unacceptably if the four-day average concentration of malathion does not exceed 0.028 ug/L more than once every three years on the average (Faria et al., 2010).
Guideline Reference: Aquatic life water quality criteria derived via the UC Davis method: l. Organophosphate insecticides. Reviews of Environmental Contamination and Toxicology 216:1-48.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
 
DECISION ID
130711
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Mercury
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: This pollutant is being considered for placement on the section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

Sixteen lines of evidence are available in the administrative record to assess this pollutant.

Sixteen LOEs summarize water samples:
- Zero of twelve water samples exceed the mercury evaluation guideline (National Recommended Water Quality Criteria, EPA 2016), set to protect for aquatic life beneficial uses.
- Zero of twelve water samples exceed the mercury evaluation guideline (California Toxics Rule, 2000), set to protect for the commercial or recreational collection of fish, shellfish, or organisms beneficial use.
- Zero of twelve water samples exceed the mercury water quality objective (Basin Plan), set to protect for agricultural supply beneficial use.
- Zero of twelve water samples exceed the mercury evaluation guideline (California Toxics Rule, 2000), set to protect for the municipal and domestic supply beneficial use.

After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. No water samples exceeded the evaluation guidelines, and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation:
 
 
Line of Evidence (LOE) for Decision ID 130711, Mercury
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 169131
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Mercury.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The mercury criteria for the protection of human health from the consumption of water and organisms for mercury is 0.050 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 130711, Mercury
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 169530
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Mercury.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.051 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 130711, Mercury
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 169232
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Mercury.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.051 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 130711, Mercury
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 169528
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Mercury.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain concentrations of chemical constituents known to be deleterious to fish or wildlife (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The Criterion Continuous Concentration for freshwater aquatic life is 0.77 ug/L (National Recommended Water Quality Criteria, EPA 2016)
Guideline Reference: National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 130711, Mercury
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 168831
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Mercury.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain concentrations of chemical constituents known to be deleterious to fish or wildlife (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The Criterion Continuous Concentration for freshwater aquatic life is 0.77 ug/L (National Recommended Water Quality Criteria, EPA 2016)
Guideline Reference: National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 130711, Mercury
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 169432
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Mercury.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain concentrations of chemical constituents known to be deleterious to fish or wildlife (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The Criterion Continuous Concentration for freshwater aquatic life is 0.77 ug/L (National Recommended Water Quality Criteria, EPA 2016)
Guideline Reference: National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 130711, Mercury
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 169428
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Mercury.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain concentrations of chemical constituents known to be deleterious to fish or wildlife (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The Criterion Continuous Concentration for freshwater aquatic life is 0.77 ug/L (National Recommended Water Quality Criteria, EPA 2016)
Guideline Reference: National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 130711, Mercury
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 169489
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Mercury.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The mercury criteria for the protection of human health from the consumption of water and organisms for mercury is 0.050 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 130711, Mercury
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 169488
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Mercury.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain concentrations of chemical constituents known to be deleterious to fish or wildlife (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The Criterion Continuous Concentration for freshwater aquatic life is 0.77 ug/L (National Recommended Water Quality Criteria, EPA 2016)
Guideline Reference: National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 130711, Mercury
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 169406
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Mercury.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The mercury criteria for the protection of human health from the consumption of water and organisms for mercury is 0.050 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 130711, Mercury
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 169259
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Mercury.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.051 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 130711, Mercury
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 169226
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Mercury.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The mercury criteria for the protection of human health from the consumption of water and organisms for mercury is 0.050 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 130711, Mercury
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 169153
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Mercury.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain concentrations of chemical constituents known to be deleterious to fish or wildlife (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The Criterion Continuous Concentration for freshwater aquatic life is 0.77 ug/L (National Recommended Water Quality Criteria, EPA 2016)
Guideline Reference: National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 130711, Mercury
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 169121
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Mercury.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain concentrations of chemical constituents known to be deleterious to fish or wildlife (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The Criterion Continuous Concentration for freshwater aquatic life is 0.77 ug/L (National Recommended Water Quality Criteria, EPA 2016)
Guideline Reference: National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 130711, Mercury
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 169366
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Mercury.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.051 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 130711, Mercury
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 169158
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Mercury.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain concentrations of chemical constituents known to be deleterious to fish or wildlife (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The Criterion Continuous Concentration for freshwater aquatic life is 0.77 ug/L (National Recommended Water Quality Criteria, EPA 2016)
Guideline Reference: National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
 
DECISION ID
113617
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Methidathion
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
 
 
Line of Evidence (LOE) for Decision ID 113617, Methidathion
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 169565
 
Pollutant: Methidathion
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Methidathion.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Methidathion is the USEPA Aquatic Life Benchmark of 0.66 ug/L for a invertebrate (acute).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
Line of Evidence (LOE) for Decision ID 113617, Methidathion
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 169690
 
Pollutant: Methidathion
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Methidathion.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: Based on USEPA IRIS reference dose (RfD) as a drinking water level, the drinking water health advisory level for methidathion is 0.7 ug/L. This was calculated assuming 70 kg body weight, 2 liters/day water consumption, and 20% relative source contribution from drinking water. An additional uncertainty factor of 10 is used for Class C carcinogens.
Guideline Reference: IRIS Database Calculations (summary)
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
Line of Evidence (LOE) for Decision ID 113617, Methidathion
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 169736
 
Pollutant: Methidathion
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Methidathion.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Methidathion is the USEPA Aquatic Life Benchmark of 0.66 ug/L for a invertebrate (acute).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
 
DECISION ID
113615
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Methiocarb
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
 
 
Line of Evidence (LOE) for Decision ID 113615, Methiocarb
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 169930
 
Pollutant: Methiocarb
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Methiocarb.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Methiocarb is the USEPA Aquatic Life Benchmark of 2.75 ug/L for a invertebrate (chronic).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
Line of Evidence (LOE) for Decision ID 113615, Methiocarb
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 169884
 
Pollutant: Methiocarb
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Methiocarb.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Methiocarb is the USEPA Aquatic Life Benchmark of 2.75 ug/L for a invertebrate (chronic).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
 
DECISION ID
113616
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Methomyl
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
 
 
Line of Evidence (LOE) for Decision ID 113616, Methomyl
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 170162
 
Pollutant: Methomyl
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Methomyl.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Methomyl is the USEPA Aquatic Life Benchmark of 0.7 ug/L for an invertebrate (chronic).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
Line of Evidence (LOE) for Decision ID 113616, Methomyl
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 170161
 
Pollutant: Methomyl
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Methomyl.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Methomyl is the USEPA Aquatic Life Benchmark of 0.7 ug/L for an invertebrate (chronic).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
Line of Evidence (LOE) for Decision ID 113616, Methomyl
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 169871
 
Pollutant: Methomyl
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Methomyl.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The life-time health advisory for methomyl is 200 ug/L (USEPA 2018).
Guideline Reference: 2018 Edition of the Drinking Water Standards and Health Advisories
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
 
DECISION ID
113602
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Methoxychlor
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: This decision was made by SWRCB staff.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
 
 
Line of Evidence (LOE) for Decision ID 113602, Methoxychlor
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 170474
 
Pollutant: Methoxychlor
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Methoxychlor. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The USEPA national ambient water quality criterion for freshwater aquatic life Criterion Continuous Concentration (CCC) expressed as a 4-day average for methoxychlor is 0.03 ug/L.
Guideline Reference: National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113602, Methoxychlor
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 170492
 
Pollutant: Methoxychlor
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Methoxychlor. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The USEPA national ambient water quality criterion for freshwater aquatic life Criterion Continuous Concentration (CCC) expressed as a 4-day average for methoxychlor is 0.03 ug/L.
Guideline Reference: National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113602, Methoxychlor
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 170514
 
Pollutant: Methoxychlor
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Methoxychlor.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All inland surface waters, enclosed bays, and estuaries shall not contain concentrations of organic chemicals in excess of the maximum contaminant levels for primary drinking water standards specified in California Code of Regulations, Title 22, Division 4, Chapter 15, Article 5.5, Section 64444, Table 64444-A.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The California Maximum Contaminant Level for Methoxychlor is 0.03 mg/L (California Code of Regulations, Title 22).
Guideline Reference: California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113602, Methoxychlor
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 170513
 
Pollutant: Methoxychlor
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Methoxychlor. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The USEPA national ambient water quality criterion for freshwater aquatic life Criterion Continuous Concentration (CCC) expressed as a 4-day average for methoxychlor is 0.03 ug/L.
Guideline Reference: National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113602, Methoxychlor
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 170512
 
Pollutant: Methoxychlor
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Methoxychlor. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The USEPA national ambient water quality criterion for freshwater aquatic life Criterion Continuous Concentration (CCC) expressed as a 4-day average for methoxychlor is 0.03 ug/L.
Guideline Reference: National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113602, Methoxychlor
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 170515
 
Pollutant: Methoxychlor
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Methoxychlor.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All inland surface waters, enclosed bays, and estuaries shall not contain concentrations of organic chemicals in excess of the maximum contaminant levels for primary drinking water standards specified in California Code of Regulations, Title 22, Division 4, Chapter 15, Article 5.5, Section 64444, Table 64444-A.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The California Maximum Contaminant Level for Methoxychlor is 0.03 mg/L (California Code of Regulations, Title 22).
Guideline Reference: California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113602, Methoxychlor
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 170452
 
Pollutant: Methoxychlor
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Methoxychlor. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The USEPA national ambient water quality criterion for freshwater aquatic life Criterion Continuous Concentration (CCC) expressed as a 4-day average for methoxychlor is 0.03 ug/L.
Guideline Reference: National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113602, Methoxychlor
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 170472
 
Pollutant: Methoxychlor
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Methoxychlor.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All inland surface waters, enclosed bays, and estuaries shall not contain concentrations of organic chemicals in excess of the maximum contaminant levels for primary drinking water standards specified in California Code of Regulations, Title 22, Division 4, Chapter 15, Article 5.5, Section 64444, Table 64444-A.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The California Maximum Contaminant Level for Methoxychlor is 0.03 mg/L (California Code of Regulations, Title 22).
Guideline Reference: California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113602, Methoxychlor
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 170493
 
Pollutant: Methoxychlor
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Methoxychlor.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All inland surface waters, enclosed bays, and estuaries shall not contain concentrations of organic chemicals in excess of the maximum contaminant levels for primary drinking water standards specified in California Code of Regulations, Title 22, Division 4, Chapter 15, Article 5.5, Section 64444, Table 64444-A.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The California Maximum Contaminant Level for Methoxychlor is 0.03 mg/L (California Code of Regulations, Title 22).
Guideline Reference: California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113602, Methoxychlor
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 170495
 
Pollutant: Methoxychlor
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Methoxychlor. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The USEPA national ambient water quality criterion for freshwater aquatic life Criterion Continuous Concentration (CCC) expressed as a 4-day average for methoxychlor is 0.03 ug/L.
Guideline Reference: National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113602, Methoxychlor
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 170451
 
Pollutant: Methoxychlor
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Methoxychlor. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The USEPA national ambient water quality criterion for freshwater aquatic life Criterion Continuous Concentration (CCC) expressed as a 4-day average for methoxychlor is 0.03 ug/L.
Guideline Reference: National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113602, Methoxychlor
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 170470
 
Pollutant: Methoxychlor
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Methoxychlor. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The USEPA national ambient water quality criterion for freshwater aquatic life Criterion Continuous Concentration (CCC) expressed as a 4-day average for methoxychlor is 0.03 ug/L.
Guideline Reference: National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
 
DECISION ID
113605
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Oxamyl (Vydate)
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
 
 
Line of Evidence (LOE) for Decision ID 113605, Oxamyl (Vydate)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 173938
 
Pollutant: Oxamyl (Vydate)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Oxamyl.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Oxamyl is the USEPA Aquatic Life Benchmark of 27 ug/L for an invertebrate (chronic).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
Line of Evidence (LOE) for Decision ID 113605, Oxamyl (Vydate)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 173907
 
Pollutant: Oxamyl (Vydate)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Oxamyl.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Oxamyl is the USEPA Aquatic Life Benchmark of 27 ug/L for an invertebrate (chronic).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
Line of Evidence (LOE) for Decision ID 113605, Oxamyl (Vydate)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 174229
 
Pollutant: Oxamyl (Vydate)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Oxamyl.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All inland surface waters, enclosed bays, and estuaries shall not contain concentrations of organic chemicals in excess of the maximum contaminant levels for primary drinking water standards specified in California Code of Regulations, Title 22, Division 4, Chapter 15, Article 5.5, Section 64444, Table 64444-A.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The California Maximum Contaminant Level for Oxamyl is 0.05 mg/L (California Code of Regulations, Title 22).
Guideline Reference: California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
 
DECISION ID
113609
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: PCBs (Polychlorinated biphenyls)
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
 
 
Line of Evidence (LOE) for Decision ID 113609, PCBs (Polychlorinated biphenyls)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 176510
 
Pollutant: PCBs (Polychlorinated biphenyls)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.014 ug/L. This value corresponds to the sum of aroclors 1242, 1254, 1221, 1232, 1248, 1260, and 1016 (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113609, PCBs (Polychlorinated biphenyls)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 176509
 
Pollutant: PCBs (Polychlorinated biphenyls)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.014 ug/L. This value corresponds to the sum of aroclors 1242, 1254, 1221, 1232, 1248, 1260, and 1016 (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113609, PCBs (Polychlorinated biphenyls)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 176466
 
Pollutant: PCBs (Polychlorinated biphenyls)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.014 ug/L. This value corresponds to the sum of aroclors 1242, 1254, 1221, 1232, 1248, 1260, and 1016 (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113609, PCBs (Polychlorinated biphenyls)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 176512
 
Pollutant: PCBs (Polychlorinated biphenyls)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.014 ug/L. This value corresponds to the sum of aroclors 1242, 1254, 1221, 1232, 1248, 1260, and 1016 (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113609, PCBs (Polychlorinated biphenyls)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 176486
 
Pollutant: PCBs (Polychlorinated biphenyls)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.014 ug/L. This value corresponds to the sum of aroclors 1242, 1254, 1221, 1232, 1248, 1260, and 1016 (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113609, PCBs (Polychlorinated biphenyls)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 176490
 
Pollutant: PCBs (Polychlorinated biphenyls)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.014 ug/L. This value corresponds to the sum of aroclors 1242, 1254, 1221, 1232, 1248, 1260, and 1016 (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113609, PCBs (Polychlorinated biphenyls)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 176487
 
Pollutant: PCBs (Polychlorinated biphenyls)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.014 ug/L. This value corresponds to the sum of aroclors 1242, 1254, 1221, 1232, 1248, 1260, and 1016 (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113609, PCBs (Polychlorinated biphenyls)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 176465
 
Pollutant: PCBs (Polychlorinated biphenyls)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.014 ug/L. This value corresponds to the sum of aroclors 1242, 1254, 1221, 1232, 1248, 1260, and 1016 (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
 
DECISION ID
126238
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Temperature, water
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: This pollutant is being considered for placement on the Clean Water Act (CWA) section 303(d) List under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status.

A total of 13 lines of evidence are available in the administrative record to assess this pollutant. A total of 71 of 947 samples exceed the evaluation guideline (Moyle 1976) applied to protect the cold freshwater habitat beneficial use.

After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. A total of 71 of 947 samples exceed the evaluation guideline applied to protect the cold freshwater habitat beneficial use and this does not exceed the allowable frequency listed in Table 3.2 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 126238, Temperature, water
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 52976
 
Pollutant: Temperature, water
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Water Temperature.
Data Reference: Data from Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program, Jan. 2007-Jul. 2009
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (Basin Plan).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The optimum range for growth and completion of most life stages of rainbow trout is 13-21 degrees Celsius (Moyle 1976).
Guideline Reference: Inland Fishes of California
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CARBLR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 3/5/2007-7/10/2007.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: Data was collected following the Quality Assurance Project Plan for Elkhorn Slough National Estuarine Research Reserve's Volunteer Monthly Water Quality Program. Replicate data were identified in data and were qualified by RB Central Coast Water Board S
QAPP Information Reference(s): Quality Assurance Project Plan, Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program. May 15, 2009, Ver.1.3
 
Line of Evidence (LOE) for Decision ID 126238, Temperature, water
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 49734
 
Pollutant: Temperature, water
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Water Temperature.
Data Reference: Salinas Rotation field data 2007
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (Basin Plan).
Objective/Criterion Reference: Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.
 
Evaluation Guideline: The optimum range for growth and completion of most life stages of rainbow trout is 13-21 degrees Celsius (Moyle 1976).
Guideline Reference: Inland Fishes of California
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 1/16/2007-2/20/2007.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate.
QAPP Information Reference(s): Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
 
Line of Evidence (LOE) for Decision ID 126238, Temperature, water
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26676
 
Pollutant: Temperature, water
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for Carneros Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Water Temperature.
Data Reference: Final Data File used for assessment: CCAMP Water Quality Data_file1
  Final Data File used for assessment: CCAMP Water Quality Data_file2
  Final Data File used for assessment: CCAMP Water Quality Data_file3
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (General Objective in Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline: Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129).
Guideline Reference: Inland Fishes of California
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 7/6/1999-7/27/1999. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 126238, Temperature, water
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26673
 
Pollutant: Temperature, water
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 22
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed CCAMP Salinas (Salinas) data for Carneros Creek to determine beneficial use support and results are as follows: 1 of 22 samples exceed the criterion for Water Temperature.
Data Reference: Final Data File used for assessment: CCAMP Salinas Toxicity data
  Final Data File used for assessment: CCAMP Water Quality Data_file1
  Final Data File used for assessment: CCAMP Water Quality Data_file2
  Final Data File used for assessment: CCAMP Water Quality Data_file3
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (General Objective in Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline: Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129).
Guideline Reference: Inland Fishes of California
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 3/1/1999-12/18/2006. Salinas watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rota
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 126238, Temperature, water
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26706
 
Pollutant: Temperature, water
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for Carneros Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Water Temperature.
Data Reference: Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (General Objective in Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline: Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129).
Guideline Reference: Inland Fishes of California
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306-CARNE-1 - Carneros Creek]
Temporal Representation: Data was collected on a single day 5/1/2004. Coastal Watershed Council Snapshot Day Monitoring is conducted annually.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 126238, Temperature, water
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26688
 
Pollutant: Temperature, water
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 189
Number of Exceedances: 35
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed National Estuarine Research Reserve Monitoring Program (R3_ESNERR) data for Carneros Creek to determine beneficial use support and results are as follows: 35 of 189 samples exceed the criterion for Water Tempera
Data Reference: Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Field Data from 2006
  Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Water Quality Data from 2006
  Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Water Quality Data from 94-04
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (General Objective in Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline: Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129).
Guideline Reference: Inland Fishes of California
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CARBLR - Carneros Creek]
Temporal Representation: Data was collected over the time period 1/20/1990-10/10/2006.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: QAPP was adopted for work conducted since 2005. Prior to 2005 no QAPP was in place and data entry was completed by volunteers. Multiple errors were identified in data and were flagged by RB staff (in communication with Elkhorn Slough Program staff) prior
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 126238, Temperature, water
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 216861
 
Pollutant: Temperature, water
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 24
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 24 samples exceeded the water quality threshold for Temperature.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The optimum range for growth and completion of most life stages of rainbow trout is 13-21 degrees Celsius (Moyle 1976).
Guideline Reference: Inland Fishes of California
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-01-03 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126238, Temperature, water
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 216828
 
Pollutant: Temperature, water
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 25
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 25 samples exceeded the water quality threshold for Temperature.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The optimum range for growth and completion of most life stages of rainbow trout is 13-21 degrees Celsius (Moyle 1976).
Guideline Reference: Inland Fishes of California
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-01-03 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126238, Temperature, water
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 216945
 
Pollutant: Temperature, water
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 10
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 10 samples exceeded the water quality threshold for Temperature.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The optimum range for growth and completion of most life stages of rainbow trout is 13-21 degrees Celsius (Moyle 1976).
Guideline Reference: Inland Fishes of California
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33)
Temporal Representation: The samples were collected between the dates of 2011-01-03 and 2011-05-07
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126238, Temperature, water
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 216992
 
Pollutant: Temperature, water
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 24
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 24 samples exceeded the water quality threshold for Temperature.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The optimum range for growth and completion of most life stages of rainbow trout is 13-21 degrees Celsius (Moyle 1976).
Guideline Reference: Inland Fishes of California
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-01-03 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126238, Temperature, water
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 216951
 
Pollutant: Temperature, water
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 21
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 21 samples exceeded the water quality threshold for Temperature.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The optimum range for growth and completion of most life stages of rainbow trout is 13-21 degrees Celsius (Moyle 1976).
Guideline Reference: Inland Fishes of California
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-03 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 126238, Temperature, water
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 216710
 
Pollutant: Temperature, water
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 20
Number of Exceedances: 5
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB3 CCAMP Salinas Rotation data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 5 of 20 samples exceeded the water quality threshold for Temperature.
Data Reference: Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The optimum range for growth and completion of most life stages of rainbow trout is 13-21 degrees Celsius (Moyle 1976).
Guideline Reference: Inland Fishes of California
 
Spatial Representation: The samples were collected at 1 monitoring site (306CAR)
Temporal Representation: The samples were collected between the dates of 2012-01-11 and 2018-12-11
Environmental Conditions:
QAPP Information: SWAMP 2008, SWAMP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 126238, Temperature, water
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26693
 
Pollutant: Temperature, water
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 602
Number of Exceedances: 30
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for Carneros Creek to determine beneficial use support and results are as follows: 30 of 602 samples exceed the criterion for Water Temperature.
Data Reference: Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A
  Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (General Objective in Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline: Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129).
Guideline Reference: Inland Fishes of California
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 9 monitoring sites [ CA-COR - Carneros Creek at Corey Rd., CA-SMC - Carneros Creek at San Miguel Canyon Rd., CA-KIR - Carneros Creek at Kirby Park, CA-BIR - Carneros Creek at Bend in road,
Temporal Representation: Data was collected over the time period 10/4/2000-2/11/2007.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data.
QAPP Information Reference(s):
 
 
DECISION ID
113624
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Thiobencarb
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

Twelve lines of evidence (LOEs) are available in the administrative record to assess this pollutant.

Zero of the 12 water samples exceeded the evaluation guideline for Cold and Warm Freshwater Habitats applied to protect for the aquatic life beneficial use.

Zero of 12 water samples exceeded the evaluation guideline applied to protect for the municipal and domestic supply beneficial use.

This sample size is insufficient to determine an applicable beneficial use support rating with the power and confidence of the Listing Policy. In accordance with Table 3.1 of the Listing Policy, a minimum of 16 samples is needed to determine if a beneficial use is fully supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported.

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. Zero water samples exceed the evaluation guidelines and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation:
 
 
Line of Evidence (LOE) for Decision ID 113624, Thiobencarb
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 156179
 
Pollutant: Thiobencarb
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Thiobencarb.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All inland surface waters, enclosed bays, and estuaries shall not contain concentrations of organic chemicals in excess of the maximum contaminant levels for primary drinking water standards specified in California Code of Regulations, Title 22, Division 4, Chapter 15, Article 5.5, Section 64444, Table 64444-A.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The California Maximum Contaminant Level for Thiobencarb is 0.07 mg/L (California Code of Regulations, Title 22).
Guideline Reference: California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113624, Thiobencarb
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 156441
 
Pollutant: Thiobencarb
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Thiobencarb.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Thiobencarb is the USEPA Aquatic Life Benchmark of 1 ug/L for a invertebrate (acute).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113624, Thiobencarb
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 156180
 
Pollutant: Thiobencarb
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Thiobencarb.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All inland surface waters, enclosed bays, and estuaries shall not contain concentrations of organic chemicals in excess of the maximum contaminant levels for primary drinking water standards specified in California Code of Regulations, Title 22, Division 4, Chapter 15, Article 5.5, Section 64444, Table 64444-A.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The California Maximum Contaminant Level for Thiobencarb is 0.07 mg/L (California Code of Regulations, Title 22).
Guideline Reference: California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113624, Thiobencarb
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 156120
 
Pollutant: Thiobencarb
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Thiobencarb.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All inland surface waters, enclosed bays, and estuaries shall not contain concentrations of organic chemicals in excess of the maximum contaminant levels for primary drinking water standards specified in California Code of Regulations, Title 22, Division 4, Chapter 15, Article 5.5, Section 64444, Table 64444-A.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The California Maximum Contaminant Level for Thiobencarb is 0.07 mg/L (California Code of Regulations, Title 22).
Guideline Reference: California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113624, Thiobencarb
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 156121
 
Pollutant: Thiobencarb
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Thiobencarb.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All inland surface waters, enclosed bays, and estuaries shall not contain concentrations of organic chemicals in excess of the maximum contaminant levels for primary drinking water standards specified in California Code of Regulations, Title 22, Division 4, Chapter 15, Article 5.5, Section 64444, Table 64444-A.
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The California Maximum Contaminant Level for Thiobencarb is 0.07 mg/L (California Code of Regulations, Title 22).
Guideline Reference: California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113624, Thiobencarb
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 156169
 
Pollutant: Thiobencarb
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Thiobencarb.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Thiobencarb is the USEPA Aquatic Life Benchmark of 1 ug/L for a invertebrate (acute).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113624, Thiobencarb
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 156176
 
Pollutant: Thiobencarb
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Thiobencarb.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Thiobencarb is the USEPA Aquatic Life Benchmark of 1 ug/L for a invertebrate (acute).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113624, Thiobencarb
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 156185
 
Pollutant: Thiobencarb
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Thiobencarb.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Thiobencarb is the USEPA Aquatic Life Benchmark of 1 ug/L for a invertebrate (acute).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113624, Thiobencarb
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 156177
 
Pollutant: Thiobencarb
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Thiobencarb.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Thiobencarb is the USEPA Aquatic Life Benchmark of 1 ug/L for a invertebrate (acute).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113624, Thiobencarb
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 156181
 
Pollutant: Thiobencarb
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Thiobencarb.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Thiobencarb is the USEPA Aquatic Life Benchmark of 1 ug/L for a invertebrate (acute).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113624, Thiobencarb
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 156116
 
Pollutant: Thiobencarb
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Thiobencarb.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Thiobencarb is the USEPA Aquatic Life Benchmark of 1 ug/L for a invertebrate (acute).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113624, Thiobencarb
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 156172
 
Pollutant: Thiobencarb
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Thiobencarb.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for Thiobencarb is the USEPA Aquatic Life Benchmark of 1 ug/L for a invertebrate (acute).
Guideline Reference: OPP Aquatic Life Benchmarks
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
 
DECISION ID
113610
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Toxaphene
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

Sixteen lines of evidence (LOEs) are available in the administrative record to assess this pollutant.

Zero of zero water samples exceeded the evaluation guideline for Cold and Warm Freshwater Habitats applied to protect for the aquatic life beneficial use. Although twelve samples were collected (three samples each taken at four separate stations), all results had to be thrown out due to quantitation issues.

Zero of zero water samples exceeded the evaluation guideline applied to protect for the commercial beneficial use, though twelve samples were collected (three samples each taken at four separate stations), all results had to be thrown out due to quantitation issues.

Zero of zero water samples exceeded the evaluation guideline applied to protect for the municipal and domestic supply beneficial use, though twelve samples were collected (three samples each taken at four separate stations), all results had to be thrown out due to quantitation issues.

This sample size is insufficient to determine an applicable beneficial use support rating with the power and confidence of the Listing Policy. In accordance with Table 3.1 of the Listing Policy, a minimum of 16 samples is needed to determine if a beneficial use is fully supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported.

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. Zero water samples exceed the evaluation guidelines and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
 
 
Line of Evidence (LOE) for Decision ID 113610, Toxaphene
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 183530
 
Pollutant: Toxaphene
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentration to protect aquatic life in freshwater is 0.0002 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113610, Toxaphene
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 183282
 
Pollutant: Toxaphene
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentration to protect aquatic life in freshwater is 0.0002 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113610, Toxaphene
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 183278
 
Pollutant: Toxaphene
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Toxaphene criteria for the protection of human health from the consumption of water and organisms is 0.00073 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113610, Toxaphene
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 183550
 
Pollutant: Toxaphene
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.00075 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113610, Toxaphene
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 183569
 
Pollutant: Toxaphene
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentration to protect aquatic life in freshwater is 0.0002 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113610, Toxaphene
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 183281
 
Pollutant: Toxaphene
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Toxaphene criteria for the protection of human health from the consumption of water and organisms is 0.00073 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113610, Toxaphene
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 183567
 
Pollutant: Toxaphene
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Toxaphene criteria for the protection of human health from the consumption of water and organisms is 0.00073 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113610, Toxaphene
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 183299
 
Pollutant: Toxaphene
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentration to protect aquatic life in freshwater is 0.0002 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113610, Toxaphene
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 183571
 
Pollutant: Toxaphene
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentration to protect aquatic life in freshwater is 0.0002 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113610, Toxaphene
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 183551
 
Pollutant: Toxaphene
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.00075 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113610, Toxaphene
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 183549
 
Pollutant: Toxaphene
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentration to protect aquatic life in freshwater is 0.0002 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113610, Toxaphene
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 183568
 
Pollutant: Toxaphene
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentration to protect aquatic life in freshwater is 0.0002 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113610, Toxaphene
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 183570
 
Pollutant: Toxaphene
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The criterion continuous concentration to protect aquatic life in freshwater is 0.0002 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113610, Toxaphene
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 183528
 
Pollutant: Toxaphene
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.00075 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113610, Toxaphene
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 183548
 
Pollutant: Toxaphene
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Toxaphene criteria for the protection of human health from the consumption of water and organisms is 0.00073 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113610, Toxaphene
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 183529
 
Pollutant: Toxaphene
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption is 0.00075 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
 
DECISION ID
113612
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Zinc
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: This pollutant is being considered for placement on the Clean Water Act (CWA) section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

A total of two lines of evidence are available in the administrative record to assess this pollutant. A total of zero of 20 samples exceed the water quality objective for the cold freshwater habitat beneficial use and zero of 20 samples exceed the water quality objective for the municipal and domestic supply beneficial use.

After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the CWA section 303(d) List.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. A total of zero of 20 samples exceed the water quality objective for the cold freshwater habitat beneficial use and zero of 20 samples exceed the water quality objective for the municipal and domestic supply beneficial use. This does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation:
 
 
Line of Evidence (LOE) for Decision ID 113612, Zinc
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 182871
 
Pollutant: Zinc
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 20
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB3 CCAMP Salinas Rotation data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 20 samples exceeded the water quality threshold for Zinc.
Data Reference: Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule (CTR) lists criterion continuous concentrations to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306CAR)
Temporal Representation: The samples were collected between the dates of 2012-01-11 and 2018-12-11
Environmental Conditions:
QAPP Information: SWAMP 2008, SWAMP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 113612, Zinc
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 182702
 
Pollutant: Zinc
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 20
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB3 CCAMP Salinas Rotation data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 20 samples exceeded the water quality threshold for Zinc.
Data Reference: Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule (CTR) lists criterion continuous concentrations to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306CAR)
Temporal Representation: The samples were collected between the dates of 2012-01-11 and 2018-12-11
Environmental Conditions:
QAPP Information: SWAMP 2008, SWAMP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
 
DECISION ID
113589
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: alpha-Endosulfan (Endosulfan 1)
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: This decision was made by SWRCB staff.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
 
 
Line of Evidence (LOE) for Decision ID 113589, alpha-Endosulfan (Endosulfan 1)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165336
 
Pollutant: alpha-Endosulfan (Endosulfan 1)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endosulfan I.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule lists criterion continuous concentrations for alpha-endosulfan to protect aquatic life in freshwater. The criteria is 0.056 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113589, alpha-Endosulfan (Endosulfan 1)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165334
 
Pollutant: alpha-Endosulfan (Endosulfan 1)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endosulfan I.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk of alpha-endosulfan associated with organism consumption is 240 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113589, alpha-Endosulfan (Endosulfan 1)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165358
 
Pollutant: alpha-Endosulfan (Endosulfan 1)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endosulfan I.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule criteria for alpha-endosulfan to protect human health for waters that include the designated use of MUN is 110 ug/L.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113589, alpha-Endosulfan (Endosulfan 1)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165382
 
Pollutant: alpha-Endosulfan (Endosulfan 1)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endosulfan I.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule criteria for alpha-endosulfan to protect human health for waters that include the designated use of MUN is 110 ug/L.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113589, alpha-Endosulfan (Endosulfan 1)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165335
 
Pollutant: alpha-Endosulfan (Endosulfan 1)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endosulfan I.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule lists criterion continuous concentrations for alpha-endosulfan to protect aquatic life in freshwater. The criteria is 0.056 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113589, alpha-Endosulfan (Endosulfan 1)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165337
 
Pollutant: alpha-Endosulfan (Endosulfan 1)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endosulfan I.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule lists criterion continuous concentrations for alpha-endosulfan to protect aquatic life in freshwater. The criteria is 0.056 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113589, alpha-Endosulfan (Endosulfan 1)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165288
 
Pollutant: alpha-Endosulfan (Endosulfan 1)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endosulfan I.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule lists criterion continuous concentrations for alpha-endosulfan to protect aquatic life in freshwater. The criteria is 0.056 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113589, alpha-Endosulfan (Endosulfan 1)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165310
 
Pollutant: alpha-Endosulfan (Endosulfan 1)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endosulfan I.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule lists criterion continuous concentrations for alpha-endosulfan to protect aquatic life in freshwater. The criteria is 0.056 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113589, alpha-Endosulfan (Endosulfan 1)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165333
 
Pollutant: alpha-Endosulfan (Endosulfan 1)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endosulfan I.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule lists criterion continuous concentrations for alpha-endosulfan to protect aquatic life in freshwater. The criteria is 0.056 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113589, alpha-Endosulfan (Endosulfan 1)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165287
 
Pollutant: alpha-Endosulfan (Endosulfan 1)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endosulfan I.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk of alpha-endosulfan associated with organism consumption is 240 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113589, alpha-Endosulfan (Endosulfan 1)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165289
 
Pollutant: alpha-Endosulfan (Endosulfan 1)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endosulfan I.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk of alpha-endosulfan associated with organism consumption is 240 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113589, alpha-Endosulfan (Endosulfan 1)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165313
 
Pollutant: alpha-Endosulfan (Endosulfan 1)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endosulfan I.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule criteria for alpha-endosulfan to protect human health for waters that include the designated use of MUN is 110 ug/L.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113589, alpha-Endosulfan (Endosulfan 1)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165314
 
Pollutant: alpha-Endosulfan (Endosulfan 1)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endosulfan I.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule lists criterion continuous concentrations for alpha-endosulfan to protect aquatic life in freshwater. The criteria is 0.056 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113589, alpha-Endosulfan (Endosulfan 1)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165357
 
Pollutant: alpha-Endosulfan (Endosulfan 1)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endosulfan I.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk of alpha-endosulfan associated with organism consumption is 240 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113589, alpha-Endosulfan (Endosulfan 1)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165360
 
Pollutant: alpha-Endosulfan (Endosulfan 1)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endosulfan I.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule criteria for alpha-endosulfan to protect human health for waters that include the designated use of MUN is 110 ug/L.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113589, alpha-Endosulfan (Endosulfan 1)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165383
 
Pollutant: alpha-Endosulfan (Endosulfan 1)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endosulfan I.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule lists criterion continuous concentrations for alpha-endosulfan to protect aquatic life in freshwater. The criteria is 0.056 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
 
DECISION ID
113607
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: beta-Endosulfan (Endosulfan 2)
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: This decision was made by SWRCB staff.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
 
 
Line of Evidence (LOE) for Decision ID 113607, beta-Endosulfan (Endosulfan 2)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165410
 
Pollutant: beta-Endosulfan (Endosulfan 2)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endosulfan II. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule lists criterion continuous concentrations for beta-endosulfan to protect aquatic life in freshwater. The criteria is 0.056 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113607, beta-Endosulfan (Endosulfan 2)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165407
 
Pollutant: beta-Endosulfan (Endosulfan 2)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endosulfan II. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule lists criterion continuous concentrations for beta-endosulfan to protect aquatic life in freshwater. The criteria is 0.056 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113607, beta-Endosulfan (Endosulfan 2)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165409
 
Pollutant: beta-Endosulfan (Endosulfan 2)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endosulfan II.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule criteria for beta-endosulfan to protect human health for waters that include the designated use of MUN is 110 ug/L.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113607, beta-Endosulfan (Endosulfan 2)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165433
 
Pollutant: beta-Endosulfan (Endosulfan 2)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endosulfan II. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule lists criterion continuous concentrations for beta-endosulfan to protect aquatic life in freshwater. The criteria is 0.056 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113607, beta-Endosulfan (Endosulfan 2)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165457
 
Pollutant: beta-Endosulfan (Endosulfan 2)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endosulfan II.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk of beta-endosulfan associated with organism consumption is 240 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113607, beta-Endosulfan (Endosulfan 2)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165406
 
Pollutant: beta-Endosulfan (Endosulfan 2)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endosulfan II.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule criteria for beta-endosulfan to protect human health for waters that include the designated use of MUN is 110 ug/L.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113607, beta-Endosulfan (Endosulfan 2)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165432
 
Pollutant: beta-Endosulfan (Endosulfan 2)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endosulfan II. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule lists criterion continuous concentrations for beta-endosulfan to protect aquatic life in freshwater. The criteria is 0.056 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113607, beta-Endosulfan (Endosulfan 2)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165477
 
Pollutant: beta-Endosulfan (Endosulfan 2)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endosulfan II. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule lists criterion continuous concentrations for beta-endosulfan to protect aquatic life in freshwater. The criteria is 0.056 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113607, beta-Endosulfan (Endosulfan 2)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165454
 
Pollutant: beta-Endosulfan (Endosulfan 2)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endosulfan II.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk of beta-endosulfan associated with organism consumption is 240 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113607, beta-Endosulfan (Endosulfan 2)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165456
 
Pollutant: beta-Endosulfan (Endosulfan 2)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endosulfan II. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule lists criterion continuous concentrations for beta-endosulfan to protect aquatic life in freshwater. The criteria is 0.056 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113607, beta-Endosulfan (Endosulfan 2)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165458
 
Pollutant: beta-Endosulfan (Endosulfan 2)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endosulfan II.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule criteria for beta-endosulfan to protect human health for waters that include the designated use of MUN is 110 ug/L.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113607, beta-Endosulfan (Endosulfan 2)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165455
 
Pollutant: beta-Endosulfan (Endosulfan 2)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endosulfan II. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule lists criterion continuous concentrations for beta-endosulfan to protect aquatic life in freshwater. The criteria is 0.056 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113607, beta-Endosulfan (Endosulfan 2)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165501
 
Pollutant: beta-Endosulfan (Endosulfan 2)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endosulfan II.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk of beta-endosulfan associated with organism consumption is 240 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113607, beta-Endosulfan (Endosulfan 2)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165434
 
Pollutant: beta-Endosulfan (Endosulfan 2)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endosulfan II. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule lists criterion continuous concentrations for beta-endosulfan to protect aquatic life in freshwater. The criteria is 0.056 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113607, beta-Endosulfan (Endosulfan 2)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165480
 
Pollutant: beta-Endosulfan (Endosulfan 2)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endosulfan II.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule criteria for beta-endosulfan to protect human health for waters that include the designated use of MUN is 110 ug/L.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113607, beta-Endosulfan (Endosulfan 2)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 165500
 
Pollutant: beta-Endosulfan (Endosulfan 2)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Endosulfan II.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk of beta-endosulfan associated with organism consumption is 240 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
 
DECISION ID
113587
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Chlorpyrifos
Final Listing Decision: List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Sources: No Source Analysis Available
Expected TMDL Completion Date: 2035
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: This pollutant is being considered for placement on the section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

Ten lines of evidence are available in the administrative record to assess this pollutant. Six of 13 water samples exceeded the aquatic life evaluation guideline (Siepmann and Finlayson 2000, with minor corrections to significant figures as described in Beaulaurier et al., 2005).

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. Six of 13 water samples exceeded the evaluation guideline, and this exceeds the allowable frequency listed in Table 3.1 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) List because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation:
 
 
Line of Evidence (LOE) for Decision ID 113587, Chlorpyrifos
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 161475
 
Pollutant: Chlorpyrifos
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 3 samples exceeded the water quality threshold for Chlorpyrifos.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Basin Plan).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The freshwater criterion continuous concentration to protect aquatic organisms is 0.015 ug/L (Siepmann and Finlayson 2000, with minor corrections to significant figures as described in Beaulaurier et al., 2005).
Guideline Reference: Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game
Guideline Reference: Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game (with minor corrections to significant figures as described in Beaulaurier et al., 2005).
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113587, Chlorpyrifos
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 161669
 
Pollutant: Chlorpyrifos
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Chlorpyrifos.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Basin Plan).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The freshwater criterion continuous concentration to protect aquatic organisms is 0.015 ug/L (Siepmann and Finlayson 2000, with minor corrections to significant figures as described in Beaulaurier et al., 2005).
Guideline Reference: Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game
Guideline Reference: Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game (with minor corrections to significant figures as described in Beaulaurier et al., 2005).
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
Line of Evidence (LOE) for Decision ID 113587, Chlorpyrifos
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 161886
 
Pollutant: Chlorpyrifos
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 2
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 2 of 3 samples exceeded the water quality threshold for Chlorpyrifos.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Basin Plan).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The freshwater criterion continuous concentration to protect aquatic organisms is 0.015 ug/L (Siepmann and Finlayson 2000, with minor corrections to significant figures as described in Beaulaurier et al., 2005).
Guideline Reference: Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game
Guideline Reference: Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game (with minor corrections to significant figures as described in Beaulaurier et al., 2005).
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113587, Chlorpyrifos
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 161592
 
Pollutant: Chlorpyrifos
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 2
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 2 of 3 samples exceeded the water quality threshold for Chlorpyrifos.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Basin Plan).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The freshwater criterion continuous concentration to protect aquatic organisms is 0.015 ug/L (Siepmann and Finlayson 2000, with minor corrections to significant figures as described in Beaulaurier et al., 2005).
Guideline Reference: Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game
Guideline Reference: Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game (with minor corrections to significant figures as described in Beaulaurier et al., 2005).
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113587, Chlorpyrifos
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 161615
 
Pollutant: Chlorpyrifos
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 2
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 2 of 3 samples exceeded the water quality threshold for Chlorpyrifos.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Basin Plan).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The freshwater criterion continuous concentration to protect aquatic organisms is 0.015 ug/L (Siepmann and Finlayson 2000, with minor corrections to significant figures as described in Beaulaurier et al., 2005).
Guideline Reference: Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game
Guideline Reference: Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game (with minor corrections to significant figures as described in Beaulaurier et al., 2005).
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113587, Chlorpyrifos
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 161383
 
Pollutant: Chlorpyrifos
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 3 samples exceeded the water quality threshold for Chlorpyrifos.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Basin Plan).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The freshwater criterion continuous concentration to protect aquatic organisms is 0.015 ug/L (Siepmann and Finlayson 2000, with minor corrections to significant figures as described in Beaulaurier et al., 2005).
Guideline Reference: Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game
Guideline Reference: Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game (with minor corrections to significant figures as described in Beaulaurier et al., 2005).
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113587, Chlorpyrifos
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 161689
 
Pollutant: Chlorpyrifos
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Chlorpyrifos.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Basin Plan).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The freshwater criterion continuous concentration to protect aquatic organisms is 0.015 ug/L (Siepmann and Finlayson 2000, with minor corrections to significant figures as described in Beaulaurier et al., 2005).
Guideline Reference: Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game
Guideline Reference: Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game (with minor corrections to significant figures as described in Beaulaurier et al., 2005).
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
Line of Evidence (LOE) for Decision ID 113587, Chlorpyrifos
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 161437
 
Pollutant: Chlorpyrifos
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 3 samples exceeded the water quality threshold for Chlorpyrifos.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Basin Plan).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The freshwater criterion continuous concentration to protect aquatic organisms is 0.015 ug/L (Siepmann and Finlayson 2000, with minor corrections to significant figures as described in Beaulaurier et al., 2005).
Guideline Reference: Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game
Guideline Reference: Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game (with minor corrections to significant figures as described in Beaulaurier et al., 2005).
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113587, Chlorpyrifos
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 161885
 
Pollutant: Chlorpyrifos
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 2
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 2 of 3 samples exceeded the water quality threshold for Chlorpyrifos.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Basin Plan).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The freshwater criterion continuous concentration to protect aquatic organisms is 0.015 ug/L (Siepmann and Finlayson 2000, with minor corrections to significant figures as described in Beaulaurier et al., 2005).
Guideline Reference: Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game
Guideline Reference: Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game (with minor corrections to significant figures as described in Beaulaurier et al., 2005).
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113587, Chlorpyrifos
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 161841
 
Pollutant: Chlorpyrifos
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 3 samples exceeded the water quality threshold for Chlorpyrifos.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Basin Plan).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The freshwater criterion continuous concentration to protect aquatic organisms is 0.015 ug/L (Siepmann and Finlayson 2000, with minor corrections to significant figures as described in Beaulaurier et al., 2005).
Guideline Reference: Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game
Guideline Reference: Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game (with minor corrections to significant figures as described in Beaulaurier et al., 2005).
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
 
DECISION ID
113588
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Copper
Final Listing Decision: List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Sources: No Source Analysis Available
Expected TMDL Completion Date: 2035
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: This pollutant is being considered for placement on the Clean Water Act (CWA) section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

A total of 19 lines of evidence are available in the administrative record to assess this pollutant. A total of three of 25 samples exceed the water quality objective for the cold freshwater habitat beneficial use, zero of 12 samples exceed the dissolved fraction water quality objective and zero of 32 samples exceed the total fraction water quality objective for the municipal and domestic supply beneficial use and three of 25 samples exceed the water quality objective for the warm freshwater habitat beneficial use.

After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the CWA section 303(d) List.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. A total of three of 25 samples exceed the water quality objective for the cold freshwater habitat beneficial use, zero of 12 samples exceed the dissolved fraction water quality objective and zero of 32 samples exceed the total fraction water quality objective for the municipal and domestic supply beneficial use and three of 25 samples exceed the water quality objective for the warm freshwater habitat beneficial use. This exceeds the allowable frequency listed in Table 3.1 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation:
 
 
Line of Evidence (LOE) for Decision ID 113588, Copper
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 162366
 
Pollutant: Copper
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 20
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB3 CCAMP Salinas Rotation data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 20 samples exceeded the water quality threshold for Copper.
Data Reference: Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: The Copper criteria for the protection of human health from the consumption of water and organisms is 1.300 mg/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306CAR)
Temporal Representation: The samples were collected between the dates of 2012-01-11 and 2018-12-11
Environmental Conditions:
QAPP Information: SWAMP 2008, SWAMP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 113588, Copper
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 162103
 
Pollutant: Copper
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Copper.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Copper criteria for the protection of human health from the consumption of water and organisms is 1.300 mg/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113588, Copper
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 162104
 
Pollutant: Copper
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Copper.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule (CTR) lists criterion continuous concentrations to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113588, Copper
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163065
 
Pollutant: Copper
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Copper.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule (CTR) lists criterion continuous concentrations to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113588, Copper
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 162724
 
Pollutant: Copper
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Copper.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Copper criteria for the protection of human health from the consumption of water and organisms is 1.300 mg/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113588, Copper
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 162494
 
Pollutant: Copper
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 13
Number of Exceedances: 3
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB3 CCAMP Salinas Rotation data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 3 of the 13 samples exceeded the water quality threshold for Copper. Although a total of 20 samples were collected, 7 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule (CTR) lists criterion continuous concentrations to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306CAR).
Temporal Representation: Data for this waterbody was collected over the date range 2012-01-11 to 2018-12-11
Environmental Conditions:
QAPP Information: SWAMP 2008, SWAMP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 113588, Copper
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 162635
 
Pollutant: Copper
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 13
Number of Exceedances: 3
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB3 CCAMP Salinas Rotation data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 3 of the 13 samples exceeded the water quality threshold for Copper. Although a total of 20 samples were collected, 7 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule (CTR) lists criterion continuous concentrations to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306CAR).
Temporal Representation: Data for this waterbody was collected over the date range 2012-01-11 to 2018-12-11
Environmental Conditions:
QAPP Information: SWAMP 2008, SWAMP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 113588, Copper
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163067
 
Pollutant: Copper
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Copper.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule (CTR) lists criterion continuous concentrations to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113588, Copper
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 162079
 
Pollutant: Copper
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Copper.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Copper criteria for the protection of human health from the consumption of water and organisms is 1.300 mg/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113588, Copper
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 162296
 
Pollutant: Copper
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Copper.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Copper criteria for the protection of human health from the consumption of water and organisms is 1.300 mg/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113588, Copper
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 162203
 
Pollutant: Copper
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Copper.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Copper criteria for the protection of human health from the consumption of water and organisms is 1.300 mg/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113588, Copper
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 162173
 
Pollutant: Copper
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Copper.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Copper criteria for the protection of human health from the consumption of water and organisms is 1.300 mg/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113588, Copper
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 162102
 
Pollutant: Copper
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Copper.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule (CTR) lists criterion continuous concentrations to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113588, Copper
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 162054
 
Pollutant: Copper
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Copper.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Copper criteria for the protection of human health from the consumption of water and organisms is 1.300 mg/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113588, Copper
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 162052
 
Pollutant: Copper
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Copper.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule (CTR) lists criterion continuous concentrations to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113588, Copper
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 162821
 
Pollutant: Copper
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Copper.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule (CTR) lists criterion continuous concentrations to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113588, Copper
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 162487
 
Pollutant: Copper
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Copper.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The Copper criteria for the protection of human health from the consumption of water and organisms is 1.300 mg/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113588, Copper
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 162837
 
Pollutant: Copper
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Copper.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule (CTR) lists criterion continuous concentrations to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113588, Copper
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 162615
 
Pollutant: Copper
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Copper.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Toxics Rule (CTR) lists criterion continuous concentrations to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
 
DECISION ID
130097
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: DDE (Dichlorodiphenyldichloroethylene)
Final Listing Decision: List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Sources: No Source Analysis Available
Expected TMDL Completion Date: 2035
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: This pollutant is being considered for placement on the section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

Eight lines of evidence are available in the administrative record to assess this pollutant.

Eight LOEs summarize water samples. Three of three water samples exceed the DDE evaluation guideline (California Toxics Rule, 2000), set to protect for the municipal beneficial uses. Three of three water sample exceeds the DDE evaluation guideline (California Toxics Rule, 2000), set to protect for the commercial or recreational collection of fish, shellfish, or other organisms, beneficial uses.

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for placing this water segment-pollutant combination on the section 303(d) List in the Water Quality Limited Segments category.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. Three of three water samples exceed the evaluation guidelines, and this exceeds the allowable frequency listed in Table 3.1 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) List because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation:
 
 
Line of Evidence (LOE) for Decision ID 130097, DDE (Dichlorodiphenyldichloroethylene)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163697
 
Pollutant: DDE (Dichlorodiphenyldichloroethylene)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 1
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 1 of the 1 samples exceeded the water quality threshold for DDE(p,p'). Although a total of 3 samples were collected, 2 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption of 4,4'-DDE is 0.00059 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 130097, DDE (Dichlorodiphenyldichloroethylene)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163672
 
Pollutant: DDE (Dichlorodiphenyldichloroethylene)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 1
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 1 of the 1 samples exceeded the water quality threshold for DDE(p,p'). Although a total of 3 samples were collected, 2 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The 4,4'-DDE criteria for the protection of human health from the consumption of water and organisms is 0.00059 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 130097, DDE (Dichlorodiphenyldichloroethylene)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163676
 
Pollutant: DDE (Dichlorodiphenyldichloroethylene)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDE(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The 4,4'-DDE criteria for the protection of human health from the consumption of water and organisms is 0.00059 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 130097, DDE (Dichlorodiphenyldichloroethylene)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163673
 
Pollutant: DDE (Dichlorodiphenyldichloroethylene)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 1
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 1 of the 1 samples exceeded the water quality threshold for DDE(p,p'). Although a total of 3 samples were collected, 2 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption of 4,4'-DDE is 0.00059 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 130097, DDE (Dichlorodiphenyldichloroethylene)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163699
 
Pollutant: DDE (Dichlorodiphenyldichloroethylene)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDE(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption of 4,4'-DDE is 0.00059 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32).
Temporal Representation: Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 130097, DDE (Dichlorodiphenyldichloroethylene)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163675
 
Pollutant: DDE (Dichlorodiphenyldichloroethylene)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 1
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 1 of the 1 samples exceeded the water quality threshold for DDE(p,p'). Although a total of 3 samples were collected, 2 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The 4,4'-DDE criteria for the protection of human health from the consumption of water and organisms is 0.00059 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 130097, DDE (Dichlorodiphenyldichloroethylene)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163656
 
Pollutant: DDE (Dichlorodiphenyldichloroethylene)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 1
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 1 of the 1 samples exceeded the water quality threshold for DDE(p,p'). Although a total of 3 samples were collected, 2 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The 4,4'-DDE criteria for the protection of human health from the consumption of water and organisms is 0.00059 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 130097, DDE (Dichlorodiphenyldichloroethylene)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 163717
 
Pollutant: DDE (Dichlorodiphenyldichloroethylene)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 1
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 1 of the 1 samples exceeded the water quality threshold for DDE(p,p'). Although a total of 3 samples were collected, 2 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Human health risk associated with organism consumption of 4,4'-DDE is 0.00059 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31).
Temporal Representation: Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
 
DECISION ID
125745
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Escherichia coli (E. coli)
Final Listing Decision: List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status Revised
Sources: No Source Analysis Available
Expected TMDL Completion Date: 2035
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: The State Water Boards Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California (the ISWEBE Plan) contains two bacteria water quality objectives applicable to the REC-1 beneficial use, which were adopted on August 7, 2018. Because the salinity level of this waterbody is equal to or less than 1 part per thousand 95 percent or more of the time, the E. coli bacteria objective applies. Therefore, this waterbody is being considered for placement on the CWA section 303(d) List under section 3.3 of the Listing Policy, as applicable, using the E. coli objective.

In accordance with section 6.1.5.3 of the Listing Policy, data should be representative of the critical timing that the pollutant is expected to impact the waterbody. E. coli populations may fluctuate substantially on a daily, seasonal, or yearly basis. Lacking constant inputs, indicator bacteria do not persist in the environment for a long period and effects are of relatively short duration. As a result, the historic levels of E. coli in the waterbody may be a poor indicator of current risks to human health, particularly when more recent data are available to sufficiently assess the water quality standard.

Additionally, water quality conditions in waterbodies may change as a result of management actions that have been implemented to address E. coli. Unrepresentative data may result in incorrectly placing or not placing a water body segment on the CWA section 303(d) List, which could result in the unnecessary expenditure of public resources or missing a human health problem. Historic lines of evidence for data collected prior to 2010 were evaluated pursuant to these considerations and were not used to assess water quality standards attainment because they do not meet the temporal representation requirements of section 6.1.5.3 of the Listing Policy.

All samples are evaluated using the statistical threshold value (STV) water quality objective for water contact recreation (ISWEBE, SWRCB 2019). The water quality objective states that the STV shall not be exceeded by more than 10 percent of the samples collected in a calendar month. Where there are more than one samples collected within any six-week period, a geomean of those samples is calculated and evaluated using the geomean water quality objective for water contact recreation (ISWEBE, SWRCB 2019).


Although 13 lines of evidence are available in the administrative record to assess this pollutant, this decision is based upon evaluation of the E. coli data collected since 2010 which are most representative of existing conditions in the waterbody. A total of 34 of the 65 samples collected since 2010 exceed the STV water quality objective (see LOEs 150402, 149787, 149778, 149738, 149779, 149843, 149777, 148256, and 149780) and this exceeds the allowable frequency listed in Table 3.2 of the Listing Policy. Note zero of the two geomeans exceed the geomean water quality objective (see LOE 148255) and this sample count is insufficient to make a beneficial use support determination. The data were collected between 2010 and 2018 and represent a range of hydrologic conditions (both wet and dry years). This sample count of data collected since 2010 is adequate to determine beneficial use support in accordance with the Listing Policy.

Note, three lines of evidence summarizing historic data (data collected prior to 2010) compared to the USEPAs Ambient Water Quality Criteria for Bacteria (USEPA, 1986). Four of the 12 historic samples exceed the USEPA criteria set to protect for water contact recreation (see LOEs 26704, 26663, and 49741). These data are not used for making this decision nor are they used in the final beneficial use determination.

After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the CWA section 303(d) List because applicable water quality standards are exceeded and a pollutant contributes to the problem.

This conclusion is based on the staff findings that:

1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. Thirty-four out of the 65 samples exceed the STV water quality objective (ISWEBE, SWRCB 2019) for water contact recreation and this exceeds the allowable frequency listed in Table 3.2 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) List because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem.
 
State Board Review of Regional Board Conclusion and Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the CWA section 303(d) List because applicable water quality standards are exceeded and a pollutant contributes to the problem.

This conclusion is based on the staff findings that:

1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. Thirty-four out of the 65 samples exceed the STV water quality objective (ISWEBE, SWRCB 2019) for water contact recreation and this exceeds the allowable frequency listed in Table 3.2 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 125745, Escherichia coli (E. coli)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 149778
 
Pollutant: Escherichia coli (E. coli)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 12
Number of Exceedances: 6
 
Data and Information Type: PATHOGEN MONITORING
Data Used to Assess Water Quality: Water Board staff assessed data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 6 of the 12 samples exceeded the Statistical Threshold Value (STV) water quality threshold for E. coli. The STV is based on a 10% exceedance rate that is calculated monthly.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The bacteria water quality objective applicable to all non-saline waters, is a Statistical Threshold Value (STV) of 320 cfu/100 mL. The applicable STV shall not be exceeded by more than 10 percent of the samples collected in a calendar month, calculated in a static manner (ISWEBE 2018).
Objective/Criterion Reference: Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site(s), station(s): 306-CARNE-36
Temporal Representation: The samples were collected between the days of 2010-12-22 and 2015-02-11 .
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125745, Escherichia coli (E. coli)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 149777
 
Pollutant: Escherichia coli (E. coli)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 11
Number of Exceedances: 6
 
Data and Information Type: PATHOGEN MONITORING
Data Used to Assess Water Quality: Water Board staff assessed data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 6 of the 11 samples exceeded the Statistical Threshold Value (STV) water quality threshold for E. coli. The STV is based on a 10% exceedance rate that is calculated monthly.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The bacteria water quality objective applicable to all non-saline waters, is a Statistical Threshold Value (STV) of 320 cfu/100 mL. The applicable STV shall not be exceeded by more than 10 percent of the samples collected in a calendar month, calculated in a static manner (ISWEBE 2018).
Objective/Criterion Reference: Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site(s), station(s): 306-CARNE-33A
Temporal Representation: The samples were collected between the days of 2011-01-28 and 2015-02-11 .
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125745, Escherichia coli (E. coli)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26663
 
Pollutant: Escherichia coli (E. coli)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 9
Number of Exceedances: 4
 
Data and Information Type: PATHOGEN MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed CCAMP Salinas (Salinas) data for Carneros Creek to determine beneficial use support and results are as follows: 4 of 9 samples exceed the criterion for Escherichia coli.
Data Reference: Final Data File used for assessment: CCAMP Salinas Toxicity data
  Final Data File used for assessment: CCAMP Water Quality Data_file1
  Final Data File used for assessment: CCAMP Water Quality Data_file2
  Final Data File used for assessment: CCAMP Water Quality Data_file3
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: USEPA Ambient Water Quality Criteria for Bacteria -1986.
Objective/Criterion Reference: Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002
 
Evaluation Guideline: Single sample maximum allowable density for E. coli in freshwater is 235 MPN/100mL (as stated in Table 4, page 15)
Guideline Reference: Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 1/23/2006-12/18/2006. Salinas watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rot
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 125745, Escherichia coli (E. coli)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26704
 
Pollutant: Escherichia coli (E. coli)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PATHOGEN MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for Carneros Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Escherichia coli.
Data Reference: Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: USEPA Ambient Water Quality Criteria for Bacteria -1986.
Objective/Criterion Reference: Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002
 
Evaluation Guideline: Single sample maximum allowable density for E. coli in freshwater is 235 MPN/100mL (as stated in Table 4, page 15)
Guideline Reference: Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306-CARNE-1 - Carneros Creek]
Temporal Representation: Data was collected on a single day 5/1/2004. Coastal Watershed Council Snapshot Day Monitoring is conducted annually.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 125745, Escherichia coli (E. coli)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 49741
 
Pollutant: Escherichia coli (E. coli)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PATHOGEN MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Escherichia coli.
Data Reference: Salinas Rotation field data 2007
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: USEPA Ambient Water Quality Criteria for Bacteria -1986.
Objective/Criterion Reference: Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002
 
Evaluation Guideline: Single sample maximum allowable density for E. coli in freshwater is 235 MPN/100mL (as stated in Table 4, page 15 of the USEPA Ambient Water Quality Criteria for Bacteria -1986).
Guideline Reference: Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 1/16/2007-2/20/2007.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate.
QAPP Information Reference(s): Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
 
Line of Evidence (LOE) for Decision ID 125745, Escherichia coli (E. coli)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 149780
 
Pollutant: Escherichia coli (E. coli)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 12
Number of Exceedances: 7
 
Data and Information Type: PATHOGEN MONITORING
Data Used to Assess Water Quality: Water Board staff assessed data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 7 of the 12 samples exceeded the Statistical Threshold Value (STV) water quality threshold for E. coli. The STV is based on a 10% exceedance rate that is calculated monthly.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The bacteria water quality objective applicable to all non-saline waters, is a Statistical Threshold Value (STV) of 320 cfu/100 mL. The applicable STV shall not be exceeded by more than 10 percent of the samples collected in a calendar month, calculated in a static manner (ISWEBE 2018).
Objective/Criterion Reference: Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site(s), station(s): 306-CARNE-31
Temporal Representation: The samples were collected between the days of 2010-12-22 and 2015-02-11 .
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125745, Escherichia coli (E. coli)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 149787
 
Pollutant: Escherichia coli (E. coli)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 2
Number of Exceedances: 2
 
Data and Information Type: PATHOGEN MONITORING
Data Used to Assess Water Quality: Water Board staff assessed data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 2 of the 2 samples exceeded the Statistical Threshold Value (STV) water quality threshold for E. coli. The STV is based on a 10% exceedance rate that is calculated monthly.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The bacteria water quality objective applicable to all non-saline waters, is a Statistical Threshold Value (STV) of 320 cfu/100 mL. The applicable STV shall not be exceeded by more than 10 percent of the samples collected in a calendar month, calculated in a static manner (ISWEBE 2018).
Objective/Criterion Reference: Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site(s), station(s): 306-CARNE-36
Temporal Representation: The samples were collected between the days of 2011-05-07 and 2012-05-05 .
Environmental Conditions:
QAPP Information: Monterey Bay NMS. 2003. California Coast Wide Snapshot Day 2003 Quality Assurance Project Plan (QAPP).
QAPP Information Reference(s): California Coast Wide Snapshot Day 2003 Quality Assurance Project Plan (QAPP)
 
Line of Evidence (LOE) for Decision ID 125745, Escherichia coli (E. coli)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 150402
 
Pollutant: Escherichia coli (E. coli)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 16
Number of Exceedances: 6
 
Data and Information Type: PATHOGEN MONITORING
Data Used to Assess Water Quality: Water Board staff assessed data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 6 of the 16 samples exceeded the Statistical Threshold Value (STV) water quality threshold for E. coli. The STV is based on a 10% exceedance rate that is calculated monthly.
Data Reference: Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: The bacteria water quality objective applicable to all non-saline waters, is a Statistical Threshold Value (STV) of 320 cfu/100 mL. The applicable STV shall not be exceeded by more than 10 percent of the samples collected in a calendar month, calculated in a static manner (ISWEBE 2018).
Objective/Criterion Reference: Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site(s), station(s): 306CAR
Temporal Representation: The samples were collected between the days of 2012-01-11 and 2018-12-11 .
Environmental Conditions:
QAPP Information: SWAMP 2008, SWAMP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 125745, Escherichia coli (E. coli)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 149843
 
Pollutant: Escherichia coli (E. coli)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 1
Number of Exceedances: 1
 
Data and Information Type: PATHOGEN MONITORING
Data Used to Assess Water Quality: Water Board staff assessed data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 1 of the 1 samples exceeded the Statistical Threshold Value (STV) water quality threshold for E. coli. The STV is based on a 10% exceedance rate that is calculated monthly.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The bacteria water quality objective applicable to all non-saline waters, is a Statistical Threshold Value (STV) of 320 cfu/100 mL. The applicable STV shall not be exceeded by more than 10 percent of the samples collected in a calendar month, calculated in a static manner (ISWEBE 2018).
Objective/Criterion Reference: Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site(s), station(s): 306-CARNE-31
Temporal Representation: The samples were collected between the days of 2011-05-07 and 2011-05-07 .
Environmental Conditions:
QAPP Information: Monterey Bay NMS. 2003. California Coast Wide Snapshot Day 2003 Quality Assurance Project Plan (QAPP).
QAPP Information Reference(s): California Coast Wide Snapshot Day 2003 Quality Assurance Project Plan (QAPP)
 
Line of Evidence (LOE) for Decision ID 125745, Escherichia coli (E. coli)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 148255
 
Pollutant: Escherichia coli (E. coli)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Staff assessed public submissions data for Carneros Creek in Los Lomas to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Escherichia coli.
Data Reference: SWAMP FIB data: 1/4/2018--4/16/2018.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: The bacteria water quality objective applicable to all non-saline waters, is a geometric mean (GM) of E. coli not to exceed 100 cfu/100 mL. The waterbody GM shall not be greater than the applicable GM magnitude in any six-week interval, calculated weekly (ISWEBE 2018).
Objective/Criterion Reference: Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek in Los Lomas was collected at 1 monitoring site [306CAR]
Temporal Representation: Data was collected on 2 sampling date(s): 04/19/2018 and 01/11/2018. CCAMP data is collected monthly and other samples associated with this project are included in another LOE for this site
Environmental Conditions:
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAPrP. QA data are included in submission. All data are flagged as appropriate.
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 125745, Escherichia coli (E. coli)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 149779
 
Pollutant: Escherichia coli (E. coli)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 8
Number of Exceedances: 6
 
Data and Information Type: PATHOGEN MONITORING
Data Used to Assess Water Quality: Water Board staff assessed data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 6 of the 8 samples exceeded the Statistical Threshold Value (STV) water quality threshold for E. coli. The STV is based on a 10% exceedance rate that is calculated monthly.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The bacteria water quality objective applicable to all non-saline waters, is a Statistical Threshold Value (STV) of 320 cfu/100 mL. The applicable STV shall not be exceeded by more than 10 percent of the samples collected in a calendar month, calculated in a static manner (ISWEBE 2018).
Objective/Criterion Reference: Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site(s), station(s): 306-CARNE-32
Temporal Representation: The samples were collected between the days of 2010-12-22 and 2015-02-11 .
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 125745, Escherichia coli (E. coli)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 149738
 
Pollutant: Escherichia coli (E. coli)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PATHOGEN MONITORING
Data Used to Assess Water Quality: Water Board staff assessed data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the Statistical Threshold Value (STV) water quality threshold for E. coli. The STV is based on a 10% exceedance rate that is calculated monthly.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The bacteria water quality objective applicable to all non-saline waters, is a Statistical Threshold Value (STV) of 320 cfu/100 mL. The applicable STV shall not be exceeded by more than 10 percent of the samples collected in a calendar month, calculated in a static manner (ISWEBE 2018).
Objective/Criterion Reference: Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site(s), station(s): 306-CARNE-32
Temporal Representation: The samples were collected between the days of 2011-05-07 and 2011-05-07 .
Environmental Conditions:
QAPP Information: Monterey Bay NMS. 2003. California Coast Wide Snapshot Day 2003 Quality Assurance Project Plan (QAPP).
QAPP Information Reference(s): California Coast Wide Snapshot Day 2003 Quality Assurance Project Plan (QAPP)
 
Line of Evidence (LOE) for Decision ID 125745, Escherichia coli (E. coli)
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 148256
 
Pollutant: Escherichia coli (E. coli)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Staff assessed public submissions data for Carneros Creek in Los Lomas to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Escherichia coli.
Data Reference: SWAMP FIB data: 1/4/2018--4/16/2018.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: The bacteria water quality objective applicable to all non-saline waters, is a Statistical Threshold Value (STV) of 320 cfu/100 mL. The applicable STV shall not be exceeded by more than 10 percent of the samples collected in a calendar month, calculated in a static manner (ISWEBE 2018).
Objective/Criterion Reference: Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Carneros Creek in Los Lomas was collected at 1 monitoring site [306CAR]
Temporal Representation: Data was collected on 2 sampling date(s): 04/19/2018 and 01/11/2018. CCAMP data is collected monthly and other samples associated with this project are included in another LOE for this site
Environmental Conditions:
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAPrP. QA data are included in submission. All data are flagged as appropriate.
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
 
DECISION ID
113604
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Organophosphate Pesticides
Final Listing Decision: List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Sources: No Source Analysis Available
Expected TMDL Completion Date: 2035
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: This pollutant is being considered for placement on the section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

Ten lines of evidence are available in the administrative record to assess this pollutant. For lines of evidence where the fraction is “not recorded” staff assumed that the fraction is “total” and the sample and exceedance counts are summed for the purpose of making this decision. Five of 13 water samples exceeded the aquatic life evaluation guideline for additive effects of chlorpyrifos and diazinon (Bailey et al., 1997).

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for placing this water segment-pollutant combination on the section 303(d) List in the Water Quality Limited Segments category.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. Five of 13 water samples exceeded the evaluation guideline and this exceeds the allowable frequency listed in Table 3.1 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) List because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation:
 
 
Line of Evidence (LOE) for Decision ID 113604, Organophosphate Pesticides
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 173417
 
Pollutant: Organophosphate Pesticides
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 3 samples exceeded the water quality threshold for Organophosphorus Pesticides.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for the protection of aquatic life from the additive effects of the organophophate pesticides chlorpyrifos and diazinon is one toxic unit equivalent. A toxic unit equivalent is equal to the sum of chlorpyrifos and diazinon from a single sample, each having their reported concentration divided their respective evaluation guideline prior to being summed. If this results in a value greater than one, the sample is considered to be in exceedance of the water quality standard. (Bailey et al., 1997).
Guideline Reference: Joint acute toxicity of Diazinon and Chlorpyrifos to Ceriodaphnia dubia.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113604, Organophosphate Pesticides
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 173274
 
Pollutant: Organophosphate Pesticides
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Organophosphorus Pesticides.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for the protection of aquatic life from the additive effects of the organophophate pesticides chlorpyrifos and diazinon is one toxic unit equivalent. A toxic unit equivalent is equal to the sum of chlorpyrifos and diazinon from a single sample, each having their reported concentration divided their respective evaluation guideline prior to being summed. If this results in a value greater than one, the sample is considered to be in exceedance of the water quality standard. (Bailey et al., 1997).
Guideline Reference: Joint acute toxicity of Diazinon and Chlorpyrifos to Ceriodaphnia dubia.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
Line of Evidence (LOE) for Decision ID 113604, Organophosphate Pesticides
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 173249
 
Pollutant: Organophosphate Pesticides
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 3 samples exceeded the water quality threshold for Organophosphorus Pesticides.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for the protection of aquatic life from the additive effects of the organophophate pesticides chlorpyrifos and diazinon is one toxic unit equivalent. A toxic unit equivalent is equal to the sum of chlorpyrifos and diazinon from a single sample, each having their reported concentration divided their respective evaluation guideline prior to being summed. If this results in a value greater than one, the sample is considered to be in exceedance of the water quality standard. (Bailey et al., 1997).
Guideline Reference: Joint acute toxicity of Diazinon and Chlorpyrifos to Ceriodaphnia dubia.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113604, Organophosphate Pesticides
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 173846
 
Pollutant: Organophosphate Pesticides
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 3 samples exceeded the water quality threshold for Organophosphorus Pesticides.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for the protection of aquatic life from the additive effects of the organophophate pesticides chlorpyrifos and diazinon is one toxic unit equivalent. A toxic unit equivalent is equal to the sum of chlorpyrifos and diazinon from a single sample, each having their reported concentration divided their respective evaluation guideline prior to being summed. If this results in a value greater than one, the sample is considered to be in exceedance of the water quality standard. (Bailey et al., 1997).
Guideline Reference: Joint acute toxicity of Diazinon and Chlorpyrifos to Ceriodaphnia dubia.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-33A)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113604, Organophosphate Pesticides
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 173416
 
Pollutant: Organophosphate Pesticides
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 3 samples exceeded the water quality threshold for Organophosphorus Pesticides.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for the protection of aquatic life from the additive effects of the organophophate pesticides chlorpyrifos and diazinon is one toxic unit equivalent. A toxic unit equivalent is equal to the sum of chlorpyrifos and diazinon from a single sample, each having their reported concentration divided their respective evaluation guideline prior to being summed. If this results in a value greater than one, the sample is considered to be in exceedance of the water quality standard. (Bailey et al., 1997).
Guideline Reference: Joint acute toxicity of Diazinon and Chlorpyrifos to Ceriodaphnia dubia.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113604, Organophosphate Pesticides
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 173594
 
Pollutant: Organophosphate Pesticides
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 3 samples exceeded the water quality threshold for Organophosphorus Pesticides.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for the protection of aquatic life from the additive effects of the organophophate pesticides chlorpyrifos and diazinon is one toxic unit equivalent. A toxic unit equivalent is equal to the sum of chlorpyrifos and diazinon from a single sample, each having their reported concentration divided their respective evaluation guideline prior to being summed. If this results in a value greater than one, the sample is considered to be in exceedance of the water quality standard. (Bailey et al., 1997).
Guideline Reference: Joint acute toxicity of Diazinon and Chlorpyrifos to Ceriodaphnia dubia.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-32)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113604, Organophosphate Pesticides
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 173694
 
Pollutant: Organophosphate Pesticides
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 2
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 2 of 3 samples exceeded the water quality threshold for Organophosphorus Pesticides.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for the protection of aquatic life from the additive effects of the organophophate pesticides chlorpyrifos and diazinon is one toxic unit equivalent. A toxic unit equivalent is equal to the sum of chlorpyrifos and diazinon from a single sample, each having their reported concentration divided their respective evaluation guideline prior to being summed. If this results in a value greater than one, the sample is considered to be in exceedance of the water quality standard. (Bailey et al., 1997).
Guideline Reference: Joint acute toxicity of Diazinon and Chlorpyrifos to Ceriodaphnia dubia.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113604, Organophosphate Pesticides
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 173826
 
Pollutant: Organophosphate Pesticides
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Organophosphorus Pesticides.
Data Reference: Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for the protection of aquatic life from the additive effects of the organophophate pesticides chlorpyrifos and diazinon is one toxic unit equivalent. A toxic unit equivalent is equal to the sum of chlorpyrifos and diazinon from a single sample, each having their reported concentration divided their respective evaluation guideline prior to being summed. If this results in a value greater than one, the sample is considered to be in exceedance of the water quality standard. (Bailey et al., 1997).
Guideline Reference: Joint acute toxicity of Diazinon and Chlorpyrifos to Ceriodaphnia dubia.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-04-26 and 2011-04-26
Environmental Conditions:
QAPP Information: Data is exempt from QAPP requirement
QAPP Information Reference(s): This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.
 
Line of Evidence (LOE) for Decision ID 113604, Organophosphate Pesticides
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 173648
 
Pollutant: Organophosphate Pesticides
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 3 samples exceeded the water quality threshold for Organophosphorus Pesticides.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for the protection of aquatic life from the additive effects of the organophophate pesticides chlorpyrifos and diazinon is one toxic unit equivalent. A toxic unit equivalent is equal to the sum of chlorpyrifos and diazinon from a single sample, each having their reported concentration divided their respective evaluation guideline prior to being summed. If this results in a value greater than one, the sample is considered to be in exceedance of the water quality standard. (Bailey et al., 1997).
Guideline Reference: Joint acute toxicity of Diazinon and Chlorpyrifos to Ceriodaphnia dubia.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-36)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
Line of Evidence (LOE) for Decision ID 113604, Organophosphate Pesticides
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 173803
 
Pollutant: Organophosphate Pesticides
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 2
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 2 of 3 samples exceeded the water quality threshold for Organophosphorus Pesticides.
Data Reference: Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: The evaluation guideline for the protection of aquatic life from the additive effects of the organophophate pesticides chlorpyrifos and diazinon is one toxic unit equivalent. A toxic unit equivalent is equal to the sum of chlorpyrifos and diazinon from a single sample, each having their reported concentration divided their respective evaluation guideline prior to being summed. If this results in a value greater than one, the sample is considered to be in exceedance of the water quality standard. (Bailey et al., 1997).
Guideline Reference: Joint acute toxicity of Diazinon and Chlorpyrifos to Ceriodaphnia dubia.
 
Spatial Representation: The samples were collected at 1 monitoring site (306-CARNE-31)
Temporal Representation: The samples were collected between the dates of 2011-02-24 and 2015-02-11
Environmental Conditions:
QAPP Information: Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.
QAPP Information Reference(s): Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan
 
 
DECISION ID
113586
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Chlorophyll-a
Final Listing Decision: Do Not Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not Delist from 303(d) list (TMDL required list)(2018)
Revision Status Original
Sources: No Source Analysis Available
Expected TMDL Completion Date: 2018
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: No new data were assessed for the 2020 listing cycle.

This pollutant is being considered for removal from the CWA section 303(d) List under section 4.2 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status.

Five lines of evidence are available in the administrative record to assess this pollutant. Twenty-five of the 62 samples exceed the evaluation guideline.

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the CWA section 303(d) List.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. Twenty-five of the 62 samples exceed the evaluation guideline and this exceeds the allowable frequency listed in Table 4.2 of the Listing Policy.
4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met.
 
Regional Board Decision Recommendation: This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current cycle. The decision has not changed.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 113586, Chlorophyll-a
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26651
 
Pollutant: Chlorophyll-a
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 23
Number of Exceedances: 13
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed CCAMP Salinas (Salinas) data for Carneros Creek to determine beneficial use support and results are as follows: 13 of 23 samples exceed the criterion for Chlorophyll a.
Data Reference: Final Data File used for assessment: CCAMP Salinas Toxicity data
  Final Data File used for assessment: CCAMP Water Quality Data_file1
  Final Data File used for assessment: CCAMP Water Quality Data_file2
  Final Data File used for assessment: CCAMP Water Quality Data_file3
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (general objective for biostimulatory substances, Water Quality Control Plan, Central Coast Basin, Chapter III, Section II).
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
Objective/Criterion Reference: North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards
Objective/Criterion Reference: Water quality standards table
 
Evaluation Guideline: North Carolina Administrative code (NCAC), Title 15A - Environmental and Natural Resources, Subchapter 2B-Surface water and wetland standards, Rule 0211-Fresh surface water quality standards for class C waters (Class C is defined as freshwaters protected for secondary recreation, fishing, aquatic life including propagation and survival, and wildlife). Section 3(a) of Rule 0211 applies to all fresh surface waters and states that chlorophyll a is not to exceed 40 ug/L.
Guideline Reference: North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards
Guideline Reference: North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards
Guideline Reference: Water quality standards table
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road].
Temporal Representation: Data was collected over the time period 3/29/1999-12/18/2006. Salinas watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 113586, Chlorophyll-a
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 49727
 
Pollutant: Chlorophyll-a
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Chlorophyll a.
Data Reference: Salinas Rotation field data 2007
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (general objective for biostimulatory substances, Water Quality Control Plan, Central Coast Basin, Chapter III, Section II).
Objective/Criterion Reference: Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.
 
Evaluation Guideline: North Carolina Administrative code (NCAC), Title 15A - Environmental and Natural Resources, Subchapter 2B-Surface water and wetland standards, Rule 0211-Fresh surface water quality standards for class C waters (Class C is defined as freshwaters protected for secondary recreation, fishing, aquatic life including propagation and survival, and wildlife). Section 3(a) of Rule 0211 applies to all fresh surface waters and states that chlorophyll a is not to exceed 40 ug/L.
Guideline Reference: North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards
Guideline Reference: Water quality standards table
Guideline Reference: North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 1/16/2007-2/20/2007.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate.
QAPP Information Reference(s): Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
 
Line of Evidence (LOE) for Decision ID 113586, Chlorophyll-a
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 52923
 
Pollutant: Chlorophyll-a
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 5
Number of Exceedances: 2
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 2 of 5 samples exceed the criterion for Chlorophyll a.
Data Reference: Data from Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program, Jan. 2007-Jul. 2009
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (general objective for biostimulatory substances, Water Quality Control Plan, Central Coast Basin, Chapter III, Section II).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: North Carolina Administrative code (NCAC), Title 15A - Environmental and Natural Resources, Subchapter 2B-Surface water and wetland standards, Rule 0211-Fresh surface water quality standards for class C waters (Class C is defined as freshwaters protected for secondary recreation, fishing, aquatic life including propagation and survival, and wildlife). Section 3(a) of Rule 0211 applies to all fresh surface waters and states that chlorophyll a is not to exceed 40 ug/L.
Guideline Reference: North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards
Guideline Reference: North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards
Guideline Reference: Water quality standards table
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CARBLR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 3/5/2007-7/10/2007.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: Data was collected following the Quality Assurance Project Plan for Elkhorn Slough National Estuarine Research Reserve's Volunteer Monthly Water Quality Program. Replicate data were identified in data and were qualified by RB Central Coast Water Board S
QAPP Information Reference(s): Quality Assurance Project Plan, Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program. May 15, 2009, Ver.1.3
 
Line of Evidence (LOE) for Decision ID 113586, Chlorophyll-a
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 52815
 
Pollutant: Chlorophyll-a
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 11
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Water Board Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 11 samples exceed the criterion for Chlorophyll a (lab).
Data Reference: Data from Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program, Jan. 2007-Jul. 2009
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (general objective for biostimulatory substances, Water Quality Control Plan, Central Coast Basin, Chapter III, Section II).
Objective/Criterion Reference: Water Quality Control Plan for the Central Coastal Basin
 
Evaluation Guideline: North Carolina Administrative code (NCAC), Title 15A - Environmental and Natural Resources, Subchapter 2B-Surface water and wetland standards, Rule 0211-Fresh surface water quality standards for class C waters (Class C is defined as freshwaters protected for secondary recreation, fishing, aquatic life including propagation and survival, and wildlife). Section 3(a) of Rule 0211 applies to all fresh surface waters and states that chlorophyll a is not to exceed 40 ug/L.
Guideline Reference: North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards
Guideline Reference: North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards
Guideline Reference: Water quality standards table
 
Spatial Representation: Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CARBLR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 6/3/2008-7/7/2009.
Environmental Conditions: Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.
QAPP Information: Data was collected following the Quality Assurance Project Plan for Elkhorn Slough National Estuarine Research Reserve's Volunteer Monthly Water Quality Program. Replicate data were identified in data and were qualified by RB Central Coast Water Board S
QAPP Information Reference(s): Quality Assurance Project Plan, Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program. May 15, 2009, Ver.1.3
 
Line of Evidence (LOE) for Decision ID 113586, Chlorophyll-a
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26687
 
Pollutant: Chlorophyll-a
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 21
Number of Exceedances: 9
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed National Estuarine Research Reserve Monitoring Program (R3_ESNERR) data for Carneros Creek to determine beneficial use support and results are as follows: 9 of 21 samples exceed the criterion for Chlorophyll a.
Data Reference: Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Field Data from 2006
  Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Water Quality Data from 2006
  Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Water Quality Data from 94-04
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (general objective for biostimulatory substances, Water Quality Control Plan, Central Coast Basin, Chapter III, Section II).
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
Objective/Criterion Reference: North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards
Objective/Criterion Reference: Water quality standards table
 
Evaluation Guideline: North Carolina Administrative code (NCAC), Title 15A - Environmental and Natural Resources, Subchapter 2B-Surface water and wetland standards, Rule 0211-Fresh surface water quality standards for class C waters (Class C is defined as freshwaters protected for secondary recreation, fishing, aquatic life including propagation and survival, and wildlife). Section 3(a) of Rule 0211 applies to all fresh surface waters and states that chlorophyll a is not to exceed 40 ug/L.
Guideline Reference: North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards
Guideline Reference: North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CARBLR - Carneros Creek]
Temporal Representation: Data was collected over the time period 7/31/2001-5/5/2006.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: QAPP was adopted for work conducted since 2005. Prior to 2005 no QAPP was in place and data entry was completed by volunteers. Multiple errors were identified in data and were flagged by RB staff (in communication with Elkhorn Slough Program staff) prior
QAPP Information Reference(s):
 
 
DECISION ID
90913
Region 3     
Carneros Creek (Monterey County)
 
Pollutant: Toxicity
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status Original
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: No new data were assessed.

This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

Three lines of evidence are available in the administrative record to assess this pollutant. One sample can have multiple toxicity test results but will be counted only once. One sample is defined as being collected on the same day and time at the same location.

Three LOEs summarize water samples. Three water samples are summarized in LOEs using each of the test organisms as the pollutant name (i.e. plant toxicity, invertebrate toxicity or vertebrate toxicity) and zero additional water samples are summarized in LOEs using the pollutant name ¿toxicity¿. Therefore, three total samples are available to assess toxic effects in water samples. Zero of the three water samples resulted in a significant toxic effect to one or more test organisms.

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. There is sufficient justification to place it in the Being Addressed portion of the 303(d) list because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. Zero of the 3 samples exhibited significant toxic effects to the test organisms relative to the controls and therefore zero exceed the water quality objective for aquatic life protection. This does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
Regional Board Decision Recommendation: This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current cycle. The decision has not changed.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 90913, Toxicity
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26712
 
Pollutant: Vertebrate Toxicity
LOE Subgroup: Toxicity
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed CCAMP Salinas (Salinas) data for Carneros Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Toxicity, Pimephales promelas Survival (%) 7 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met).
Data Reference: Final Data File used for assessment: CCAMP Salinas Toxicity data
  Final Data File used for assessment: CCAMP Water Quality Data_file1
  Final Data File used for assessment: CCAMP Water Quality Data_file2
  Final Data File used for assessment: CCAMP Water Quality Data_file3
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline: Significant reduction of survival of test organism relative to the control (alpha < 0.05) and test organism survival is 20% less than the control survival.
Guideline Reference: Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 6/15/2006-2/14/2007. Salinas watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of sites.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 90913, Toxicity
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26711
 
Pollutant: Invertebrate Toxicity
LOE Subgroup: Toxicity
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed CCAMP Salinas (Salinas) data for Carneros Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Toxicity, Ceriodaphnia dubia Survival (%) 7 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met).
Data Reference: Final Data File used for assessment: CCAMP Salinas Toxicity data
  Final Data File used for assessment: CCAMP Water Quality Data_file1
  Final Data File used for assessment: CCAMP Water Quality Data_file2
  Final Data File used for assessment: CCAMP Water Quality Data_file3
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline: Significant reduction of survival of test organism relative to the control (alpha < 0.05) and test organism survival is 20% less than the control survival.
Guideline Reference: Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 6/15/2006-2/14/2007. Salinas watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of sites.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 90913, Toxicity
Region 3     
Carneros Creek (Monterey County)
 
LOE ID: 26714
 
Pollutant: Plant Toxicity
LOE Subgroup: Toxicity
Matrix: Water
Fraction: None
 
Beneficial Use: Cold Freshwater Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Central Coast Regional Board Staff assessed CCAMP Salinas (Salinas) data for Carneros Creek to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Toxicity, Selenastrum capricornutum Growth (Cell Density) 4 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met).
Data Reference: Final Data File used for assessment: CCAMP Salinas Toxicity data
  Final Data File used for assessment: CCAMP Water Quality Data_file1
  Final Data File used for assessment: CCAMP Water Quality Data_file2
  Final Data File used for assessment: CCAMP Water Quality Data_file3
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).
Objective/Criterion Reference: Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)
 
Evaluation Guideline: Significant reduction in cell count of test organism relative to the control (alpha < 0.05) and cell count <80% of control.
Guideline Reference: Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
 
Spatial Representation: Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]
Temporal Representation: Data was collected over the time period 6/15/2006-2/15/2007. Salinas watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of sites.
Environmental Conditions: Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate.
QAPP Information Reference(s):