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
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 Consequently, the fecal coliform objective for water contact recreation is no longer applicable to this waterbody and those LOEs have been removed from this decision.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