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

Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

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:

Number of Exceedances:

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:	A Source Unknown
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:

184077

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

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:

184361

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

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:

183892

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

184261

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

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:

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:

184242

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

219256

Pollutant:

Ammonia (Unionized)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

219321

Pollutant:

Ammonia (Unionized)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

Number of Exceedances:

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:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

219289

Pollutant:

Ammonia (Unionized)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

219449

Pollutant:

Ammonia (Unionized)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

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:

49726

Pollutant:

Ammonia (Unionized)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.

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:

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:

49755

Pollutant:

Ammonia (Unionized)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

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:

26650

Pollutant:

Ammonia (Unionized)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

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:

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:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

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:

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:

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:

Number of Exceedances:

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:

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:

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:

Number of Exceedances:

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:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

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:

Number of Exceedances:

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:

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:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

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:

Number of Exceedances:

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:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

184061

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

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:

184115

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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


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:	A Source Unknown
Expected TMDL Completion Date:	2027
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for removal from the CWA section 303(d) List under 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:

171410

Pollutant:

Nitrate/Nitrite (Nitrite + Nitrate as N)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

171983

Pollutant:

Nitrate/Nitrite (Nitrite + Nitrate as N)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

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:

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 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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

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 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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

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 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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

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 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:

171825

Pollutant:

Nitrate/Nitrite (Nitrite + Nitrate as N)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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 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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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 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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

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 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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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 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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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 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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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 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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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 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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

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 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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

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 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:

Number of Exceedances:

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:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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 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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

172267

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

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:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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 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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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 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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

Number of Exceedances:

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:

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 2018-12-11

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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 2011-05-07 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:

172096

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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 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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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 2011-05-07 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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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 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:

Number of Exceedances:

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:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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 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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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 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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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 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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

Number of Exceedances:

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:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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 2011-05-07 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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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 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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-05-07 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:

171657

Pollutant:

Nitrate/Nitrite (Nitrite + Nitrate as N)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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 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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

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:

172820

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

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:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-05-07 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:

Number of Exceedances:

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:

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 2018-12-11

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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 2011-05-07 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:

52831

Pollutant:

Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

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:

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:

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:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.

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:

Evaluation Guideline:

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:

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:

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:

Number of Exceedances:

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:

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:

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:

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 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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

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:

Environmental Conditions:

Staff is not aware of any special conditions that might effect interpretation of the data.

QAPP Information:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.

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:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

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:

Number of Exceedances:

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:

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:

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:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.

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:

Evaluation Guideline:

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:

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:

49729

Pollutant:

Nitrate/Nitrite (Nitrite + Nitrate as N)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.

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:

Evaluation Guideline:

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:

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:

Number of Exceedances:

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:

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:

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:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.

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:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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 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:

Number of Exceedances:

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:

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:

Number of Exceedances:

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:

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:

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:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.

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:

Evaluation Guideline:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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 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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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 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


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:

174116

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

174235

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

49730

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

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:

Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.

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:

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:

26671

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

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:

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:

Number of Exceedances:

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:

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:

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:

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:

52869

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

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:

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:

26674

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

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:

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:

QAPP Information Reference(s):

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:

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:

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 Information Reference(s):

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

173894

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

174088

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

174665

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Fish Spawning

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

Number of Exceedances:

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:

174032

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

173910

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Fish Spawning

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

Number of Exceedances:

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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


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:

182955

Pollutant:

Turbidity

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

182242

Pollutant:

Turbidity

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

183068

Pollutant:

Turbidity

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

182902

Pollutant:

Turbidity

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

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:

182981

Pollutant:

Turbidity

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

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:

182350

Pollutant:

Turbidity

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

182210

Pollutant:

Turbidity

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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

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:

Number of Exceedances:

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:

Number of Exceedances:

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:

Environmental Conditions:

Staff is not aware of any special conditions that might effect interpretation of the data.

QAPP Information:

QAPP Information Reference(s):

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:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.

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:

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:

52961

Pollutant:

Turbidity

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

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:

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:

26692

Pollutant:

Turbidity

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

137

Number of Exceedances:

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:

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:

26691

Pollutant:

Turbidity

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

186

Number of Exceedances:

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:

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 Information Reference(s):

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:

Number of Exceedances:

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:

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:

183138

Pollutant:

Turbidity

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

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


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 and 4.3 of the Listing Policy. Under these section, a single line of evidence is necessary to assess listing status. Fifty-four lines of evidence is 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:

52902

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Data from Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program, Jan. 2007-Jul. 2009

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The pH value shall not be depressed below 7.0 or raised above 8.5 (Basin Plan).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CARBLR-Carneros Creek in Los Lomas at Blohm Road]

Temporal Representation:

Data was collected over the time period 3/5/2007-7/10/2007.

Environmental Conditions:

Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

QAPP Information Reference(s):

Quality Assurance Project Plan, Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program. May 15, 2009, Ver.1.3

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

178864

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 10 of 24 samples exceeded the water quality threshold for pH.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan, Central Coast Basin objective for warm fresh water habitat (Section 3.3.2 Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries) states that the pH value shall neither be depressed below 7.0 nor raised above 8.5.

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-01-03 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

26665

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Central Coast Regional Board Staff assessed CCAMP Salinas (Salinas) data for Carneros Creek to determine beneficial use support and results are as follows: 4 of 9 samples exceed the criterion for pH.

Data Reference:

Final Data File used for assessment: CCAMP Salinas Toxicity data

Final Data File used for assessment: CCAMP Water Quality Data_file1

Final Data File used for assessment: CCAMP Water Quality Data_file2

Final Data File used for assessment: CCAMP Water Quality Data_file3

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: For waters not mentioned by a specific beneficial use, the pH value shall not be depressed below 7.0 or raised above 8.5.

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road].

Temporal Representation:

Environmental Conditions:

Staff is not aware of any special conditions that might effect interpretation of the data.

QAPP Information:

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

26707

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306-CARNE-1 - Carneros Creek]

Temporal Representation:

Data was collected on a single day 5/1/2004. Coastal Watershed Council Snapshot Day Monitoring is conducted annually.

Environmental Conditions:

Staff is not aware of any special conditions that might effect interpretation of the data.

QAPP Information:

State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

49732

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The pH value shall not be depressed below 7.0 or raised above 8.5 (Basin Plan).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]

Temporal Representation:

Data was collected over the time period 1/16/2007-2/20/2007.

Environmental Conditions:

Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate.

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

177840

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Non-Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Non-Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

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:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

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:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

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:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306CAR)

Temporal Representation:

The samples were collected between the dates of 2012-06-26 and 2018-11-06

Environmental Conditions:

QAPP Information:

SWAMP 2008, SWAMP 2017

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

177972

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-01-03 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

178198

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306CAR)

Temporal Representation:

The samples were collected between the dates of 2012-06-26 and 2018-11-06

Environmental Conditions:

QAPP Information:

SWAMP 2008, SWAMP 2017

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

178585

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Non-Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 6 of 10 samples exceeded the water quality threshold for pH.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33)

Temporal Representation:

The samples were collected between the dates of 2011-01-03 and 2011-05-07

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

177661

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 11 of 24 samples exceeded the water quality threshold for pH.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-01-03 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

177778

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33)

Temporal Representation:

The samples were collected between the dates of 2011-01-03 and 2011-05-07

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

177874

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Non-Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-01-03 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

178633

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33)

Temporal Representation:

The samples were collected between the dates of 2011-01-03 and 2011-05-07

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

178655

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-01-03 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

177240

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

26682

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

180

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

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 Information Reference(s):

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

49739

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The pH value shall not be depressed below 6.5 or raised above 8.3 (Basin Plan).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]

Temporal Representation:

Data was collected over the time period 1/16/2007-2/20/2007.

Environmental Conditions:

Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate.

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

26708

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan, Central Coast Basin, Section II.A.2. Municipal and Domestic Supply Objectives, Section II.A.2.a states the following: The pH value shall neither be depressed below 6.5 or raised above 8.3.

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306-CARNE-1 - Carneros Creek]

Temporal Representation:

Data was collected on a single day 5/1/2004. Coastal Watershed Council Snapshot Day Monitoring is conducted annually.

Environmental Conditions:

Staff is not aware of any special conditions that might effect interpretation of the data.

QAPP Information:

State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

26684

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

180

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

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 Information Reference(s):

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

26666

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Central Coast Regional Board Staff assessed CCAMP Salinas (Salinas) data for Carneros Creek to determine beneficial use support and results are as follows: 4 of 9 samples exceed the criterion for pH.

Data Reference:

Final Data File used for assessment: CCAMP Salinas Toxicity data

Final Data File used for assessment: CCAMP Water Quality Data_file1

Final Data File used for assessment: CCAMP Water Quality Data_file2

Final Data File used for assessment: CCAMP Water Quality Data_file3

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

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:

Environmental Conditions:

Staff is not aware of any special conditions that might effect interpretation of the data.

QAPP Information:

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

52915

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Data from Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program, Jan. 2007-Jul. 2009

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The pH value shall not be depressed below 6.5 or raised above 8.3 (Basin Plan).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CARBLR-Carneros Creek in Los Lomas at Blohm Road]

Temporal Representation:

Data was collected over the time period 3/5/2007-7/10/2007.

Environmental Conditions:

Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

QAPP Information Reference(s):

Quality Assurance Project Plan, Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program. May 15, 2009, Ver.1.3

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

26695

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

642

Number of Exceedances:

109

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Temporal Representation:

Data was collected over the time period 10/4/2000-2/11/2007.

Environmental Conditions:

Staff is not aware of any special conditions that might effect interpretation of the data.

QAPP Information:

Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

49754

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Non-Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The pH value shall neither be depressed below 6.5 nor raised above 8.3 (Basin Plan).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]

Temporal Representation:

Data was collected over the time period 1/16/2007-2/20/2007.

Environmental Conditions:

Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate.

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

26710

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Non-Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306-CARNE-1 - Carneros Creek]

Temporal Representation:

Data was collected on a single day 5/1/2004. Coastal Watershed Council Snapshot Day Monitoring is conducted annually.

Environmental Conditions:

Staff is not aware of any special conditions that might effect interpretation of the data.

QAPP Information:

State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

52945

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Non-Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Data from Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program, Jan. 2007-Jul. 2009

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The pH value shall neither be depressed below 6.5 nor raised above 8.3 (Basin Plan).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CARBLR-Carneros Creek in Los Lomas at Blohm Road]

Temporal Representation:

Data was collected over the time period 3/5/2007-7/10/2007.

Environmental Conditions:

Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

QAPP Information Reference(s):

Quality Assurance Project Plan, Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program. May 15, 2009, Ver.1.3

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

26668

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Non-Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Central Coast Regional Board Staff assessed CCAMP Salinas (Salinas) data for Carneros Creek to determine beneficial use support and results are as follows: 4 of 9 samples exceed the criterion for pH.

Data Reference:

Final Data File used for assessment: CCAMP Salinas Toxicity data

Final Data File used for assessment: CCAMP Water Quality Data_file1

Final Data File used for assessment: CCAMP Water Quality Data_file2

Final Data File used for assessment: CCAMP Water Quality Data_file3

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

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:

Environmental Conditions:

Staff is not aware of any special conditions that might effect interpretation of the data.

QAPP Information:

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

26697

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Non-Contact Recreation

Number of Samples:

642

Number of Exceedances:

109

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Temporal Representation:

Data was collected over the time period 10/4/2000-2/11/2007.

Environmental Conditions:

Staff is not aware of any special conditions that might effect interpretation of the data.

QAPP Information:

Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

26686

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Non-Contact Recreation

Number of Samples:

180

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

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 Information Reference(s):

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

52938

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Data from Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program, Jan. 2007-Jul. 2009

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The pH value shall neither be depressed below 6.5 nor raised above 8.3 (Basin Plan).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CARBLR-Carneros Creek in Los Lomas at Blohm Road]

Temporal Representation:

Data was collected over the time period 3/5/2007-7/10/2007.

Environmental Conditions:

Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

QAPP Information Reference(s):

Quality Assurance Project Plan, Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program. May 15, 2009, Ver.1.3

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

49742

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The pH value shall neither be depressed below 6.5 nor raised above 8.3 (Basin Plan).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]

Temporal Representation:

Data was collected over the time period 1/16/2007-2/20/2007.

Environmental Conditions:

Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate.

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

26685

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

180

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Field Data from 2006

Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Water Quality Data from 2006

Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Water Quality Data from 94-04

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan, Central Coast Basin objective for water contact recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3.

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CARBLR - Carneros Creek]

Temporal Representation:

Data was collected over the time period 1/20/1990-10/10/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might effect interpretation of the data.

QAPP Information:

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

26667

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Central Coast Regional Board Staff assessed CCAMP Salinas (Salinas) data for Carneros Creek to determine beneficial use support and results are as follows: 4 of 9 samples exceed the criterion for pH.

Data Reference:

Final Data File used for assessment: CCAMP Salinas Toxicity data

Final Data File used for assessment: CCAMP Water Quality Data_file1

Final Data File used for assessment: CCAMP Water Quality Data_file2

Final Data File used for assessment: CCAMP Water Quality Data_file3

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

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:

Environmental Conditions:

Staff is not aware of any special conditions that might effect interpretation of the data.

QAPP Information:

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

26696

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

642

Number of Exceedances:

109

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Temporal Representation:

Data was collected over the time period 10/4/2000-2/11/2007.

Environmental Conditions:

Staff is not aware of any special conditions that might effect interpretation of the data.

QAPP Information:

Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

26709

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306-CARNE-1 - Carneros Creek]

Temporal Representation:

Data was collected on a single day 5/1/2004. Coastal Watershed Council Snapshot Day Monitoring is conducted annually.

Environmental Conditions:

Staff is not aware of any special conditions that might effect interpretation of the data.

QAPP Information:

State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

177770

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

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:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Non-Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

177802

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-01-03 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

179222

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 16 of 25 samples exceeded the water quality threshold for pH.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-01-03 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

178054

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A)

Temporal Representation:

The samples were collected between the dates of 2011-02-03 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

177684

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33)

Temporal Representation:

The samples were collected between the dates of 2011-01-03 and 2011-05-07

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

178865

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 25 of 25 samples exceeded the water quality threshold for pH.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-01-03 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

177689

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-01-03 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

177317

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-01-03 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

177838

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Non-Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-01-03 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113608, pH	Region 3
Carneros Creek (Monterey County)

LOE ID:

177305

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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:

26694

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

642

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Temporal Representation:

Data was collected over the time period 10/4/2000-2/11/2007.

Environmental Conditions:

Staff is not aware of any special conditions that might effect interpretation of the data.

QAPP Information:

Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data.

QAPP Information Reference(s):


DECISION ID	113620	Region 3
Carneros Creek (Monterey County)

Pollutant:	Aldicarb
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 113620, Aldicarb	Region 3
Carneros Creek (Monterey County)

LOE ID:

157210

Pollutant:

Aldicarb

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Aldicarb.

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Aldicarb is the USEPA Aquatic Life Benchmark of 0.46 ug/L for a fish (chronic).

Guideline Reference:

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113620, Aldicarb	Region 3
Carneros Creek (Monterey County)

LOE ID:

157228

Pollutant:

Aldicarb

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Aldicarb is the USEPA Aquatic Life Benchmark of 0.46 ug/L for a fish (chronic).

Guideline Reference:

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):


DECISION ID	113621	Region 3
Carneros Creek (Monterey County)

Pollutant:	Aldrin
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the section 303(d) List under sections 3.1 of the Listing Policy. Under sections 3.1, one line of evidence is necessary to assess listing status in water samples. Sixteen lines of evidence are available in the administrative record to assess this pollutant. Zero of 12 water samples exceeded the evaluation guideline applied to protect aquatic life beneficial uses (CTR 2000). Zero of 0 water samples exceeded the evaluation guideline applied to protect commercial or recreational collection beneficial uses (CTR 2000). Although a total of 12 samples were collected, 12 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. Zero of 0 water samples exceeded the evaluation guideline applied to protect drinking water (CTR 2000). Although a total of 12 samples were collected, 12 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) List in the Water Quality Limited Segments category. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. No samples exceeded the evaluation guidelines, and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:

Line of Evidence (LOE) for Decision ID 113621, Aldrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

157003

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Aldrin. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Aldrin criteria for the protection of human health from the consumption of water and organisms is 0.00013 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113621, Aldrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

157002

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113621, Aldrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

157026

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113621, Aldrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

157347

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113621, Aldrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

157324

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Aldrin criteria for the protection of human health from the consumption of water and organisms is 0.00013 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113621, Aldrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

157349

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The criterion maximum concentration to protect aquatic life in freshwater is 3 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113621, Aldrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

157325

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113621, Aldrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

157049

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113621, Aldrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

156999

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113621, Aldrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

157046

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Aldrin criteria for the protection of human health from the consumption of water and organisms is 0.00013 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113621, Aldrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

157345

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113621, Aldrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

157346

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Aldrin criteria for the protection of human health from the consumption of water and organisms is 0.00013 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113621, Aldrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

157047

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113621, Aldrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

157025

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113621, Aldrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

157004

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113621, Aldrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

157000

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan


DECISION ID	113597	Region 3
Carneros Creek (Monterey County)

Pollutant:	Azinphos-methyl (Guthion)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 113597, Azinphos-methyl (Guthion)	Region 3
Carneros Creek (Monterey County)

LOE ID:

159034

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The Criterion Continuous Concentration for freshwater aquatic life is 0.01 ug/L (National Recommended Water Quality Criteria, EPA 2016)

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113597, Azinphos-methyl (Guthion)	Region 3
Carneros Creek (Monterey County)

LOE ID:

158593

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The Criterion Continuous Concentration for freshwater aquatic life is 0.01 ug/L (National Recommended Water Quality Criteria, EPA 2016)

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113597, Azinphos-methyl (Guthion)	Region 3
Carneros Creek (Monterey County)

LOE ID:

158762

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The Criterion Continuous Concentration for freshwater aquatic life is 0.01 ug/L (National Recommended Water Quality Criteria, EPA 2016)

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113597, Azinphos-methyl (Guthion)	Region 3
Carneros Creek (Monterey County)

LOE ID:

158721

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The Criterion Continuous Concentration for freshwater aquatic life is 0.01 ug/L (National Recommended Water Quality Criteria, EPA 2016)

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113597, Azinphos-methyl (Guthion)	Region 3
Carneros Creek (Monterey County)

LOE ID:

158761

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The Criterion Continuous Concentration for freshwater aquatic life is 0.01 ug/L (National Recommended Water Quality Criteria, EPA 2016)

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113597, Azinphos-methyl (Guthion)	Region 3
Carneros Creek (Monterey County)

LOE ID:

158704

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The Criterion Continuous Concentration for freshwater aquatic life is 0.01 ug/L (National Recommended Water Quality Criteria, EPA 2016)

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113597, Azinphos-methyl (Guthion)	Region 3
Carneros Creek (Monterey County)

LOE ID:

158639

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The Criterion Continuous Concentration for freshwater aquatic life is 0.01 ug/L (National Recommended Water Quality Criteria, EPA 2016)

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113597, Azinphos-methyl (Guthion)	Region 3
Carneros Creek (Monterey County)

LOE ID:

158530

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The Criterion Continuous Concentration for freshwater aquatic life is 0.01 ug/L (National Recommended Water Quality Criteria, EPA 2016)

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan


DECISION ID	113625	Region 3
Carneros Creek (Monterey County)

Pollutant:	Bensulide
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the Clean Water Act (CWA) section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. A total of two lines of evidence are available in the administrative record to assess this pollutant. A total of zero of one sample exceeds the evaluation guideline for the cold freshwater habitat beneficial use and zero of one sample exceeds the evaluation guideline for the warm freshwater habitat beneficial use. The readily available data and information are insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. A total of zero of one sample exceeds the evaluation guideline for the cold freshwater habitat beneficial use and zero of one sample exceeds the evaluation guideline for the warm freshwater habitat beneficial use and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 113625, Bensulide	Region 3
Carneros Creek (Monterey County)

LOE ID:

158956

Pollutant:

Bensulide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Bensulide is the USEPA Aquatic Life Benchmark of 11 ug/L for an invertebrate (chronic).

Guideline Reference:

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113625, Bensulide	Region 3
Carneros Creek (Monterey County)

LOE ID:

159163

Pollutant:

Bensulide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Bensulide is the USEPA Aquatic Life Benchmark of 11 ug/L for an invertebrate (chronic).

Guideline Reference:

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):


DECISION ID	113583	Region 3
Carneros Creek (Monterey County)

Pollutant:	Carbaryl
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 113583, Carbaryl	Region 3
Carneros Creek (Monterey County)

LOE ID:

160198

Pollutant:

Carbaryl

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The Criterion Continuous Concentration for freshwater aquatic life is 2.1 ug/L (National Recommended Water Quality Criteria, EPA 2016)

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 113583, Carbaryl	Region 3
Carneros Creek (Monterey County)

LOE ID:

160666

Pollutant:

Carbaryl

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The Criterion Continuous Concentration for freshwater aquatic life is 2.1 ug/L (National Recommended Water Quality Criteria, EPA 2016)

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 113583, Carbaryl	Region 3
Carneros Creek (Monterey County)

LOE ID:

160097

Pollutant:

Carbaryl

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The USEPA drinking water health advisory for carbaryl is 40 ug/L.

Guideline Reference:

2018 Edition of the Drinking Water Standards and Health Advisories

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.


DECISION ID	113584	Region 3
Carneros Creek (Monterey County)

Pollutant:	Carbofuran
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 113584, Carbofuran	Region 3
Carneros Creek (Monterey County)

LOE ID:

160603

Pollutant:

Carbofuran

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Carbofuran is the USEPA Aquatic Life Benchmark of 0.75 ug/L for an invertibrate (chronic).

Guideline Reference:

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113584, Carbofuran	Region 3
Carneros Creek (Monterey County)

LOE ID:

160510

Pollutant:

Carbofuran

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Carbofuran is the USEPA Aquatic Life Benchmark of 0.75 ug/L for an invertibrate (chronic).

Guideline Reference:

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113584, Carbofuran	Region 3
Carneros Creek (Monterey County)

LOE ID:

160604

Pollutant:

Carbofuran

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All inland surface waters, enclosed bays, and estuaries shall not contain concentrations of organic chemicals in excess of the maximum contaminant levels for primary drinking water standards specified in California Code of Regulations, Title 22, Division 4, Chapter 15, Article 5.5, Section 64444, Table 64444-A.

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The California Maximum Contaminant Level for Carbofuran is 0.018 mg/L (California Code of Regulations, Title 22).

Guideline Reference:

California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.


DECISION ID	113585	Region 3
Carneros Creek (Monterey County)

Pollutant:	Chlordane
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Sixteen lines of evidence (LOEs) are available in the administrative record to assess this pollutant. Zero of the zero water samples exceeded the evaluation guideline for Cold and Warm Freshwater Habitats applied to protect for the aquatic life beneficial use. Though twelve sample(s) were collected (three samples each taken at four separate stations), all results had to be thrown out due to quantitation issues. Zero of zero water samples exceeded the evaluation guideline applied to protect for the commercial beneficial use, though twelve sample(s) were collected (three samples each taken at four separate stations), all results had to be thrown out due to quantitation issues. Zero of zero water samples exceeded the evaluation guideline applied to protect for the municipal and domestic supply beneficial use, though twelve sample(s) were collected (three samples each taken at four separate stations), all results had to be thrown out due to quantitation issues. This sample size is insufficient to determine an applicable beneficial use support rating with the power and confidence of the Listing Policy. In accordance with Table 3.1 of the Listing Policy, a minimum of 16 samples is needed to determine if a beneficial use is fully supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero water samples exceed the evaluation guidelines and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 113585, Chlordane	Region 3
Carneros Creek (Monterey County)

LOE ID:

156148

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordanes. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113585, Chlordane	Region 3
Carneros Creek (Monterey County)

LOE ID:

156144

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordanes. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113585, Chlordane	Region 3
Carneros Creek (Monterey County)

LOE ID:

156139

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordanes. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The criterion continuous concentrations to protect aquatic life in freshwater is 0.0043 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113585, Chlordane	Region 3
Carneros Creek (Monterey County)

LOE ID:

156134

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordanes. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The criterion continuous concentrations to protect aquatic life in freshwater is 0.0043 ug/L A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113585, Chlordane	Region 3
Carneros Creek (Monterey County)

LOE ID:

156137

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordanes. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113585, Chlordane	Region 3
Carneros Creek (Monterey County)

LOE ID:

156159

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordanes. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The total chlordane (cis plus trans) criteria for the protection of human health from the consumption of water and organisms is 0.00057 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113585, Chlordane	Region 3
Carneros Creek (Monterey County)

LOE ID:

156150

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordanes. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113585, Chlordane	Region 3
Carneros Creek (Monterey County)

LOE ID:

156142

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordanes. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113585, Chlordane	Region 3
Carneros Creek (Monterey County)

LOE ID:

156152

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordanes. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The total chlordane (cis plus trans) criteria for the protection of human health from the consumption of water and organisms is 0.00057 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113585, Chlordane	Region 3
Carneros Creek (Monterey County)

LOE ID:

156143

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordanes. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113585, Chlordane	Region 3
Carneros Creek (Monterey County)

LOE ID:

156157

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordanes. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The total chlordane (cis plus trans) criteria for the protection of human health from the consumption of water and organisms is 0.00057 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113585, Chlordane	Region 3
Carneros Creek (Monterey County)

LOE ID:

156149

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordanes. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113585, Chlordane	Region 3
Carneros Creek (Monterey County)

LOE ID:

156151

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordanes. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113585, Chlordane	Region 3
Carneros Creek (Monterey County)

LOE ID:

156155

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordanes. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The total chlordane (cis plus trans) criteria for the protection of human health from the consumption of water and organisms is 0.00057 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113585, Chlordane	Region 3
Carneros Creek (Monterey County)

LOE ID:

156135

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordanes. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113585, Chlordane	Region 3
Carneros Creek (Monterey County)

LOE ID:

156147

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordanes. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan


DECISION ID	130038	Region 3
Carneros Creek (Monterey County)

Pollutant:	DDD (Dichlorodiphenyldichloroethane)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Eight lines of evidence are available in the administrative record to assess this pollutant. Eight LOEs summarize water samples. Twelve samples were collected and compared to the DDD evaluation guidelines (California Toxics Rule, 2000), set to protect for commercial or recreational collection of fish, shellfish, or other organisms, and municipal beneficial uses. However, all samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. No water samples are included in the assessment because laboratory data reporting limit(s) were above the water quality threshold. This does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:

Line of Evidence (LOE) for Decision ID 130038, DDD (Dichlorodiphenyldichloroethane)	Region 3
Carneros Creek (Monterey County)

LOE ID:

163629

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption of 4,4'-DDD is 0.00084 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 130038, DDD (Dichlorodiphenyldichloroethane)	Region 3
Carneros Creek (Monterey County)

LOE ID:

163654

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption of 4,4'-DDD is 0.00084 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 130038, DDD (Dichlorodiphenyldichloroethane)	Region 3
Carneros Creek (Monterey County)

LOE ID:

163632

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDD criteria for the protection of human health from the consumption of water and organisms is 0.00083 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 130038, DDD (Dichlorodiphenyldichloroethane)	Region 3
Carneros Creek (Monterey County)

LOE ID:

163655

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDD criteria for the protection of human health from the consumption of water and organisms is 0.00083 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 130038, DDD (Dichlorodiphenyldichloroethane)	Region 3
Carneros Creek (Monterey County)

LOE ID:

163633

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDD criteria for the protection of human health from the consumption of water and organisms is 0.00083 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 130038, DDD (Dichlorodiphenyldichloroethane)	Region 3
Carneros Creek (Monterey County)

LOE ID:

163634

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDD criteria for the protection of human health from the consumption of water and organisms is 0.00083 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 130038, DDD (Dichlorodiphenyldichloroethane)	Region 3
Carneros Creek (Monterey County)

LOE ID:

163652

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption of 4,4'-DDD is 0.00084 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 130038, DDD (Dichlorodiphenyldichloroethane)	Region 3
Carneros Creek (Monterey County)

LOE ID:

163610

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption of 4,4'-DDD is 0.00084 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan


DECISION ID	129584	Region 3
Carneros Creek (Monterey County)

Pollutant:	DDT (Dichlorodiphenyltrichloroethane)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Twelve lines of evidence are available in the administrative record to assess this pollutant. Twelve LOEs summarize water samples. One of one water samples exceed the DDT evaluation guideline (California Toxics Rule, 2000), set to protect for aquatic life beneficial uses. One of one water samples exceed the DDT evaluation guideline (California Toxics Rule, 2000), set to protect for the municipal beneficial uses. Note that multiple samples were not used because the laboratory data reporting limits were above the water quality threshold and therefore could not be quantified with the level of certainty required by the listing policy. After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. One of one water sample exceeds the evaluation guidelines for aquatic life and one of one water sample exceeds the evaluation guidelines for the municipal beneficial use. This does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:

Line of Evidence (LOE) for Decision ID 129584, DDT (Dichlorodiphenyltrichloroethane)	Region 3
Carneros Creek (Monterey County)

LOE ID:

163741

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDT criterion continuous concentrations to protect aquatic life in freshwater is 0.001 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 129584, DDT (Dichlorodiphenyltrichloroethane)	Region 3
Carneros Creek (Monterey County)

LOE ID:

163778

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 1 of the 1 samples exceeded the water quality threshold for DDT(p,p'). Although a total of 3 samples were collected, 2 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDT criteria for the protection of human health from the consumption of water and organisms is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 129584, DDT (Dichlorodiphenyltrichloroethane)	Region 3
Carneros Creek (Monterey County)

LOE ID:

163782

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDT criteria for the protection of human health from the consumption of water and organisms is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 129584, DDT (Dichlorodiphenyltrichloroethane)	Region 3
Carneros Creek (Monterey County)

LOE ID:

163757

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 129584, DDT (Dichlorodiphenyltrichloroethane)	Region 3
Carneros Creek (Monterey County)

LOE ID:

163760

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 129584, DDT (Dichlorodiphenyltrichloroethane)	Region 3
Carneros Creek (Monterey County)

LOE ID:

163799

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDT criteria for the protection of human health from the consumption of water and organisms is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 129584, DDT (Dichlorodiphenyltrichloroethane)	Region 3
Carneros Creek (Monterey County)

LOE ID:

163739

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 129584, DDT (Dichlorodiphenyltrichloroethane)	Region 3
Carneros Creek (Monterey County)

LOE ID:

163781

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDT criteria for the protection of human health from the consumption of water and organisms is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 129584, DDT (Dichlorodiphenyltrichloroethane)	Region 3
Carneros Creek (Monterey County)

LOE ID:

163718

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 129584, DDT (Dichlorodiphenyltrichloroethane)	Region 3
Carneros Creek (Monterey County)

LOE ID:

163780

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 129584, DDT (Dichlorodiphenyltrichloroethane)	Region 3
Carneros Creek (Monterey County)

LOE ID:

163719

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 129584, DDT (Dichlorodiphenyltrichloroethane)	Region 3
Carneros Creek (Monterey County)

LOE ID:

163721

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan


DECISION ID	113590	Region 3
Carneros Creek (Monterey County)

Pollutant:	Diazinon
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the section 303(d) List under sections 3.1 and 3.6 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Eight lines of evidence are available in the administrative record to assess this pollutant. Zero of seven water samples exceeded the aquatic life evaluation guideline (Finlayson, 2004). This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported using table 3.1. After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List because applicable water quality standards are not being exceeded. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero samples exceeded the water quality objectives. This does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:

Line of Evidence (LOE) for Decision ID 113590, Diazinon	Region 3
Carneros Creek (Monterey County)

LOE ID:

164024

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Diazinon. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The freshwater chronic value for diazinon is 0.1 ug/L, expressed as a continuous concentration (Finlayson, 2004).

Guideline Reference:

Water quality for diazinon. Memorandum to J. Karkoski, Central Valley RWQCB. Rancho Cordova, CA: Pesticide Investigation Unit, CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113590, Diazinon	Region 3
Carneros Creek (Monterey County)

LOE ID:

163640

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The freshwater chronic value for diazinon is 0.1 ug/L, expressed as a continuous concentration (Finlayson, 2004).

Guideline Reference:

Water quality for diazinon. Memorandum to J. Karkoski, Central Valley RWQCB. Rancho Cordova, CA: Pesticide Investigation Unit, CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 113590, Diazinon	Region 3
Carneros Creek (Monterey County)

LOE ID:

163643

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The freshwater chronic value for diazinon is 0.1 ug/L, expressed as a continuous concentration (Finlayson, 2004).

Guideline Reference:

Water quality for diazinon. Memorandum to J. Karkoski, Central Valley RWQCB. Rancho Cordova, CA: Pesticide Investigation Unit, CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113590, Diazinon	Region 3
Carneros Creek (Monterey County)

LOE ID:

164196

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The freshwater chronic value for diazinon is 0.1 ug/L, expressed as a continuous concentration (Finlayson, 2004).

Guideline Reference:

Water quality for diazinon. Memorandum to J. Karkoski, Central Valley RWQCB. Rancho Cordova, CA: Pesticide Investigation Unit, CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113590, Diazinon	Region 3
Carneros Creek (Monterey County)

LOE ID:

163771

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The freshwater chronic value for diazinon is 0.1 ug/L, expressed as a continuous concentration (Finlayson, 2004).

Guideline Reference:

Water quality for diazinon. Memorandum to J. Karkoski, Central Valley RWQCB. Rancho Cordova, CA: Pesticide Investigation Unit, CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113590, Diazinon	Region 3
Carneros Creek (Monterey County)

LOE ID:

163555

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The freshwater chronic value for diazinon is 0.1 ug/L, expressed as a continuous concentration (Finlayson, 2004).

Guideline Reference:

Water quality for diazinon. Memorandum to J. Karkoski, Central Valley RWQCB. Rancho Cordova, CA: Pesticide Investigation Unit, CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113590, Diazinon	Region 3
Carneros Creek (Monterey County)

LOE ID:

163968

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The freshwater chronic value for diazinon is 0.1 ug/L, expressed as a continuous concentration (Finlayson, 2004).

Guideline Reference:

Water quality for diazinon. Memorandum to J. Karkoski, Central Valley RWQCB. Rancho Cordova, CA: Pesticide Investigation Unit, CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 113590, Diazinon	Region 3
Carneros Creek (Monterey County)

LOE ID:

163511

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The freshwater chronic value for diazinon is 0.1 ug/L, expressed as a continuous concentration (Finlayson, 2004).

Guideline Reference:

Water quality for diazinon. Memorandum to J. Karkoski, Central Valley RWQCB. Rancho Cordova, CA: Pesticide Investigation Unit, CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan


DECISION ID	113591	Region 3
Carneros Creek (Monterey County)

Pollutant:	Dichlorvos
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 113591, Dichlorvos	Region 3
Carneros Creek (Monterey County)

LOE ID:

164332

Pollutant:

Dichlorvos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dichlorvos. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Dichlorvos is the USEPA Aquatic Life Benchmark of 0.0058 ug/L for a invertebrate (acute).

Guideline Reference:

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-04-26 to 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113591, Dichlorvos	Region 3
Carneros Creek (Monterey County)

LOE ID:

164336

Pollutant:

Dichlorvos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The USEPA IRIS one-in-a-million cancer risk estimate from oral exposure for dichlorvos is 0.1 ug/L.

Guideline Reference:

IRIS Database Calculations (summary)

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 113591, Dichlorvos	Region 3
Carneros Creek (Monterey County)

LOE ID:

164337

Pollutant:

Dichlorvos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Dichlorvos is the USEPA Aquatic Life Benchmark of 0.0058 ug/L for a invertebrate (acute).

Guideline Reference:

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-04-26 to 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):


DECISION ID	113592	Region 3
Carneros Creek (Monterey County)

Pollutant:	Dieldrin
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Sixteen lines of evidence (LOEs) are available in the administrative record to assess this pollutant. Zero of the eight water samples exceeded the evaluation guideline for Cold and Warm Freshwater Habitats applied to protect for the aquatic life beneficial use. Although twelve sample(s) were collected (three samples each taken at four separate stations), four sample results had to be thrown out due to quantitation issues. Zero of zero water samples exceeded the evaluation guideline applied to protect for the commercial beneficial use, though twelve sample(s) were collected (three samples each taken at four separate stations), all results had to be thrown out due to quantitation issues. Zero of zero water samples exceeded the evaluation guideline applied to protect for the municipal and domestic supply beneficial use, though twelve sample(s) were collected (three samples each taken at four separate stations), all results had to be thrown out due to quantitation issues. This sample size is insufficient to determine an applicable beneficial use support rating with the power and confidence of the Listing Policy. In accordance with Table 3.1 of the Listing Policy, a minimum of 16 samples is needed to determine if a beneficial use is fully supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero water samples exceed the evaluation guidelines and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 113592, Dieldrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

164428

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Dieldrin. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The criterion continuous concentrations to protect aquatic life in freshwater is 0.056 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113592, Dieldrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

164449

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Dieldrin. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113592, Dieldrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

164425

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113592, Dieldrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

164206

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Dieldrin. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113592, Dieldrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

164484

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Dieldrin criteria for the protection of human health from the consumption of water and organisms is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113592, Dieldrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

164487

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Dieldrin criteria for the protection of human health from the consumption of water and organisms is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113592, Dieldrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

164467

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113592, Dieldrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

164483

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Dieldrin. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113592, Dieldrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

164448

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113592, Dieldrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

164446

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Dieldrin. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113592, Dieldrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

164502

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Dieldrin. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113592, Dieldrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

164447

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Dieldrin criteria for the protection of human health from the consumption of water and organisms is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113592, Dieldrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

164503

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Dieldrin. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113592, Dieldrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

164464

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Dieldrin. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113592, Dieldrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

164468

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113592, Dieldrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

164485

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Dieldrin criteria for the protection of human health from the consumption of water and organisms is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan


DECISION ID	113618	Region 3
Carneros Creek (Monterey County)

Pollutant:	Dimethoate
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 113618, Dimethoate	Region 3
Carneros Creek (Monterey County)

LOE ID:

164671

Pollutant:

Dimethoate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Dimethoate is the USEPA Aquatic Life Benchmark of 0.5 ug/L for a invertebrate (acute).

Guideline Reference:

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113618, Dimethoate	Region 3
Carneros Creek (Monterey County)

LOE ID:

164687

Pollutant:

Dimethoate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Dimethoate is the USEPA Aquatic Life Benchmark of 0.5 ug/L for a invertebrate (acute).

Guideline Reference:

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):


DECISION ID	113593	Region 3
Carneros Creek (Monterey County)

Pollutant:	Disulfoton
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	This decision was made by SWRCB staff.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 113593, Disulfoton	Region 3
Carneros Creek (Monterey County)

LOE ID:

164994

Pollutant:

Disulfoton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Disulfoton. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Disulfoton is the USEPA Aquatic Life Benchmark of 0.01 ug/L for an invertebrate (chronic).

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113593, Disulfoton	Region 3
Carneros Creek (Monterey County)

LOE ID:

164989

Pollutant:

Disulfoton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Disulfoton. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The USEPA drinking water health advisory for disulfoton is 0.7 ug/L.

Guideline Reference:

2018 Edition of the Drinking Water Standards and Health Advisories

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113593, Disulfoton	Region 3
Carneros Creek (Monterey County)

LOE ID:

165156

Pollutant:

Disulfoton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Disulfoton. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Disulfoton is the USEPA Aquatic Life Benchmark of 0.01 ug/L for an invertebrate (chronic).

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113593, Disulfoton	Region 3
Carneros Creek (Monterey County)

LOE ID:

164947

Pollutant:

Disulfoton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Disulfoton. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Disulfoton is the USEPA Aquatic Life Benchmark of 0.01 ug/L for an invertebrate (chronic).

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113593, Disulfoton	Region 3
Carneros Creek (Monterey County)

LOE ID:

165231

Pollutant:

Disulfoton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Disulfoton. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Disulfoton is the USEPA Aquatic Life Benchmark of 0.01 ug/L for an invertebrate (chronic).

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113593, Disulfoton	Region 3
Carneros Creek (Monterey County)

LOE ID:

165204

Pollutant:

Disulfoton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Disulfoton. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The USEPA drinking water health advisory for disulfoton is 0.7 ug/L.

Guideline Reference:

2018 Edition of the Drinking Water Standards and Health Advisories

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113593, Disulfoton	Region 3
Carneros Creek (Monterey County)

LOE ID:

165179

Pollutant:

Disulfoton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Disulfoton. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The USEPA drinking water health advisory for disulfoton is 0.7 ug/L.

Guideline Reference:

2018 Edition of the Drinking Water Standards and Health Advisories

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113593, Disulfoton	Region 3
Carneros Creek (Monterey County)

LOE ID:

165159

Pollutant:

Disulfoton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Disulfoton. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Disulfoton is the USEPA Aquatic Life Benchmark of 0.01 ug/L for an invertebrate (chronic).

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113593, Disulfoton	Region 3
Carneros Creek (Monterey County)

LOE ID:

165228

Pollutant:

Disulfoton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Disulfoton. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Disulfoton is the USEPA Aquatic Life Benchmark of 0.01 ug/L for an invertebrate (chronic).

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113593, Disulfoton	Region 3
Carneros Creek (Monterey County)

LOE ID:

165038

Pollutant:

Disulfoton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Disulfoton. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Disulfoton is the USEPA Aquatic Life Benchmark of 0.01 ug/L for an invertebrate (chronic).

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113593, Disulfoton	Region 3
Carneros Creek (Monterey County)

LOE ID:

165091

Pollutant:

Disulfoton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Disulfoton. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Disulfoton is the USEPA Aquatic Life Benchmark of 0.01 ug/L for an invertebrate (chronic).

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113593, Disulfoton	Region 3
Carneros Creek (Monterey County)

LOE ID:

165255

Pollutant:

Disulfoton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Disulfoton. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The USEPA drinking water health advisory for disulfoton is 0.7 ug/L.

Guideline Reference:

2018 Edition of the Drinking Water Standards and Health Advisories

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan


DECISION ID	113594	Region 3
Carneros Creek (Monterey County)

Pollutant:	Endosulfan sulfate
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	This decision was made by SWRCB staff.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 113594, Endosulfan sulfate	Region 3
Carneros Creek (Monterey County)

LOE ID:

165526

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Endosulfan Sulfate criteria for endosulfan sulfate to protect human health for waters that include the designated use of MUN is 110 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113594, Endosulfan sulfate	Region 3
Carneros Creek (Monterey County)

LOE ID:

165525

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113594, Endosulfan sulfate	Region 3
Carneros Creek (Monterey County)

LOE ID:

165524

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113594, Endosulfan sulfate	Region 3
Carneros Creek (Monterey County)

LOE ID:

165530

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Endosulfan Sulfate criteria for endosulfan sulfate to protect human health for waters that include the designated use of MUN is 110 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113594, Endosulfan sulfate	Region 3
Carneros Creek (Monterey County)

LOE ID:

165527

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Endosulfan Sulfate criteria for endosulfan sulfate to protect human health for waters that include the designated use of MUN is 110 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113594, Endosulfan sulfate	Region 3
Carneros Creek (Monterey County)

LOE ID:

165505

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113594, Endosulfan sulfate	Region 3
Carneros Creek (Monterey County)

LOE ID:

165503

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113594, Endosulfan sulfate	Region 3
Carneros Creek (Monterey County)

LOE ID:

165528

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Endosulfan Sulfate criteria for endosulfan sulfate to protect human health for waters that include the designated use of MUN is 110 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan


DECISION ID	113595	Region 3
Carneros Creek (Monterey County)

Pollutant:	Endrin
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Sixteen lines of evidence (LOEs) are available in the administrative record to assess this pollutant. Zero of the eight water samples exceeded the evaluation guideline for Cold and Warm Freshwater Habitats applied to protect for the aquatic life beneficial use. Although twelve sample(s) were collected (three samples each taken at four separate stations), four sample results had to be thrown out due to quantitation issues. Zero of 12 water samples exceeded the evaluation guideline applied to protect for the commercial beneficial use. Zero of 12 water samples exceeded the evaluation guideline applied to protect for the municipal and domestic supply beneficial use. This sample size is insufficient to determine an applicable beneficial use support rating with the power and confidence of the Listing Policy. In accordance with Table 3.1 of the Listing Policy, a minimum of 16 samples is needed to determine if a beneficial use is fully supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero water samples exceed the evaluation guidelines and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 113595, Endrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

165270

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Endrin criteria for the protection of human health from the consumption of water and organisms is 0.76 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113595, Endrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

165268

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endrin. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The criterion continuous concentrations to protect aquatic life in freshwater is 0.036 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113595, Endrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

165574

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endrin. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113595, Endrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

165593

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endrin. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113595, Endrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

165595

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Endrin criteria for the protection of human health from the consumption of water and organisms is 0.76 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113595, Endrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

165618

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Endrin criteria for the protection of human health from the consumption of water and organisms is 0.76 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113595, Endrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

165597

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endrin. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113595, Endrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

165552

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.81ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113595, Endrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

165549

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.81ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113595, Endrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

165619

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endrin. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113595, Endrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

165594

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endrin. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113595, Endrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

165548

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.81ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113595, Endrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

165572

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endrin. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113595, Endrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

165620

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.81ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113595, Endrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

165269

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Endrin criteria for the protection of human health from the consumption of water and organisms is 0.76 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113595, Endrin	Region 3
Carneros Creek (Monterey County)

LOE ID:

165596

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endrin. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan


DECISION ID	113613	Region 3
Carneros Creek (Monterey County)

Pollutant:	Ethion
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	This decision was made by SWRCB staff.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 113613, Ethion	Region 3
Carneros Creek (Monterey County)

LOE ID:

165763

Pollutant:

Ethion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Ethion. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Ethion is the USEPA Aquatic Life Benchmark of 0.028 ug/L for invertebrates (acute).

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113613, Ethion	Region 3
Carneros Creek (Monterey County)

LOE ID:

165643

Pollutant:

Ethion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Ethion. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Ethion is the USEPA Aquatic Life Benchmark of 0.028 ug/L for invertebrates (acute).

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113613, Ethion	Region 3
Carneros Creek (Monterey County)

LOE ID:

165747

Pollutant:

Ethion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The USEPA expected safe lifetime exposure limit in drinking water for Ethion, calculated using the IRIS Reference Dose, is 3.5 ug/L. This was calculated assuming 70 kg body weight, 2 liters/day water consumption, 20% relative source contribution from drinking water, and 0.0005 mg/kg/day as the reference dose.

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113613, Ethion	Region 3
Carneros Creek (Monterey County)

LOE ID:

165809

Pollutant:

Ethion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

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):

Line of Evidence (LOE) for Decision ID 113613, Ethion	Region 3
Carneros Creek (Monterey County)

LOE ID:

165706

Pollutant:

Ethion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Ethion. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Ethion is the USEPA Aquatic Life Benchmark of 0.028 ug/L for invertebrates (acute).

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113613, Ethion	Region 3
Carneros Creek (Monterey County)

LOE ID:

165826

Pollutant:

Ethion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Ethion. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Ethion is the USEPA Aquatic Life Benchmark of 0.028 ug/L for invertebrates (acute).

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113613, Ethion	Region 3
Carneros Creek (Monterey County)

LOE ID:

165641

Pollutant:

Ethion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Ethion. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Ethion is the USEPA Aquatic Life Benchmark of 0.028 ug/L for invertebrates (acute).

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113613, Ethion	Region 3
Carneros Creek (Monterey County)

LOE ID:

165937

Pollutant:

Ethion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113613, Ethion	Region 3
Carneros Creek (Monterey County)

LOE ID:

165921

Pollutant:

Ethion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Ethion. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Ethion is the USEPA Aquatic Life Benchmark of 0.028 ug/L for invertebrates (acute).

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113613, Ethion	Region 3
Carneros Creek (Monterey County)

LOE ID:

165703

Pollutant:

Ethion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113613, Ethion	Region 3
Carneros Creek (Monterey County)

LOE ID:

165665

Pollutant:

Ethion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Ethion. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Ethion is the USEPA Aquatic Life Benchmark of 0.028 ug/L for invertebrates (acute).

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113613, Ethion	Region 3
Carneros Creek (Monterey County)

LOE ID:

165870

Pollutant:

Ethion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Ethion. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Ethion is the USEPA Aquatic Life Benchmark of 0.028 ug/L for invertebrates (acute).

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):


DECISION ID	113619	Region 3
Carneros Creek (Monterey County)

Pollutant:	Ethoprop
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 113619, Ethoprop	Region 3
Carneros Creek (Monterey County)

LOE ID:

166292

Pollutant:

Ethoprop

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Ethoprop is the USEPA Aquatic Life Benchmark of 0.8 ug/L for a invertebrate (acute).

Guideline Reference:

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113619, Ethoprop	Region 3
Carneros Creek (Monterey County)

LOE ID:

166049

Pollutant:

Ethoprop

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Ethoprop is the USEPA Aquatic Life Benchmark of 0.8 ug/L for a invertebrate (acute).

Guideline Reference:

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):


DECISION ID	113598	Region 3
Carneros Creek (Monterey County)

Pollutant:	Heptachlor
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 113598, Heptachlor	Region 3
Carneros Creek (Monterey County)

LOE ID:

167219

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The criterion continuous concentrations to protect aquatic life in freshwater is 0.0038 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113598, Heptachlor	Region 3
Carneros Creek (Monterey County)

LOE ID:

167202

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113598, Heptachlor	Region 3
Carneros Creek (Monterey County)

LOE ID:

167181

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113598, Heptachlor	Region 3
Carneros Creek (Monterey County)

LOE ID:

167240

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113598, Heptachlor	Region 3
Carneros Creek (Monterey County)

LOE ID:

167263

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Heptachlor criteria for the protection of human health from the consumption of water and organisms is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113598, Heptachlor	Region 3
Carneros Creek (Monterey County)

LOE ID:

167184

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113598, Heptachlor	Region 3
Carneros Creek (Monterey County)

LOE ID:

167199

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113598, Heptachlor	Region 3
Carneros Creek (Monterey County)

LOE ID:

167222

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113598, Heptachlor	Region 3
Carneros Creek (Monterey County)

LOE ID:

167242

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Heptachlor criteria for the protection of human health from the consumption of water and organisms is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113598, Heptachlor	Region 3
Carneros Creek (Monterey County)

LOE ID:

167201

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113598, Heptachlor	Region 3
Carneros Creek (Monterey County)

LOE ID:

167223

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Heptachlor criteria for the protection of human health from the consumption of water and organisms is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113598, Heptachlor	Region 3
Carneros Creek (Monterey County)

LOE ID:

167203

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113598, Heptachlor	Region 3
Carneros Creek (Monterey County)

LOE ID:

167182

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113598, Heptachlor	Region 3
Carneros Creek (Monterey County)

LOE ID:

167241

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113598, Heptachlor	Region 3
Carneros Creek (Monterey County)

LOE ID:

167262

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Heptachlor criteria for the protection of human health from the consumption of water and organisms is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113598, Heptachlor	Region 3
Carneros Creek (Monterey County)

LOE ID:

167183

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan


DECISION ID	113599	Region 3
Carneros Creek (Monterey County)

Pollutant:	Heptachlor epoxide
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 113599, Heptachlor epoxide	Region 3
Carneros Creek (Monterey County)

LOE ID:

167278

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113599, Heptachlor epoxide	Region 3
Carneros Creek (Monterey County)

LOE ID:

167281

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.00011 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113599, Heptachlor epoxide	Region 3
Carneros Creek (Monterey County)

LOE ID:

167300

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Heptachlor Epoxide criteria for the protection of human health from the consumption of water and organisms is 0.00010 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113599, Heptachlor epoxide	Region 3
Carneros Creek (Monterey County)

LOE ID:

167017

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Heptachlor Epoxide criteria for the protection of human health from the consumption of water and organisms is 0.00010 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113599, Heptachlor epoxide	Region 3
Carneros Creek (Monterey County)

LOE ID:

166998

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Heptachlor Epoxide criteria for the protection of human health from the consumption of water and organisms is 0.00010 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113599, Heptachlor epoxide	Region 3
Carneros Creek (Monterey County)

LOE ID:

167020

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.00011 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113599, Heptachlor epoxide	Region 3
Carneros Creek (Monterey County)

LOE ID:

167019

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.00011 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113599, Heptachlor epoxide	Region 3
Carneros Creek (Monterey County)

LOE ID:

166996

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113599, Heptachlor epoxide	Region 3
Carneros Creek (Monterey County)

LOE ID:

167299

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Heptachlor Epoxide criteria for the protection of human health from the consumption of water and organisms is 0.00010 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113599, Heptachlor epoxide	Region 3
Carneros Creek (Monterey County)

LOE ID:

167037

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113599, Heptachlor epoxide	Region 3
Carneros Creek (Monterey County)

LOE ID:

167280

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113599, Heptachlor epoxide	Region 3
Carneros Creek (Monterey County)

LOE ID:

166999

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113599, Heptachlor epoxide	Region 3
Carneros Creek (Monterey County)

LOE ID:

167018

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113599, Heptachlor epoxide	Region 3
Carneros Creek (Monterey County)

LOE ID:

167036

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113599, Heptachlor epoxide	Region 3
Carneros Creek (Monterey County)

LOE ID:

167056

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.00011 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113599, Heptachlor epoxide	Region 3
Carneros Creek (Monterey County)

LOE ID:

167016

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan


DECISION ID	113623	Region 3
Carneros Creek (Monterey County)

Pollutant:	Hexachlorocyclohexane (HCH), alpha
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	This decision was made by SWRCB staff.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 113623, Hexachlorocyclohexane (HCH), alpha	Region 3
Carneros Creek (Monterey County)

LOE ID:

167030

Pollutant:

Hexachlorocyclohexane (HCH), alpha

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, alpha-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.013 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113623, Hexachlorocyclohexane (HCH), alpha	Region 3
Carneros Creek (Monterey County)

LOE ID:

166751

Pollutant:

Hexachlorocyclohexane (HCH), alpha

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for HCH, alpha-. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The BHC, alpha criteria for the protection of human health from the consumption of water and organisms is 0.0039 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113623, Hexachlorocyclohexane (HCH), alpha	Region 3
Carneros Creek (Monterey County)

LOE ID:

166755

Pollutant:

Hexachlorocyclohexane (HCH), alpha

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for HCH, alpha-. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The BHC, alpha criteria for the protection of human health from the consumption of water and organisms is 0.0039 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113623, Hexachlorocyclohexane (HCH), alpha	Region 3
Carneros Creek (Monterey County)

LOE ID:

167032

Pollutant:

Hexachlorocyclohexane (HCH), alpha

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for HCH, alpha-. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The BHC, alpha criteria for the protection of human health from the consumption of water and organisms is 0.0039 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113623, Hexachlorocyclohexane (HCH), alpha	Region 3
Carneros Creek (Monterey County)

LOE ID:

166753

Pollutant:

Hexachlorocyclohexane (HCH), alpha

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, alpha-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.013 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113623, Hexachlorocyclohexane (HCH), alpha	Region 3
Carneros Creek (Monterey County)

LOE ID:

166734

Pollutant:

Hexachlorocyclohexane (HCH), alpha

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, alpha-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.013 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113623, Hexachlorocyclohexane (HCH), alpha	Region 3
Carneros Creek (Monterey County)

LOE ID:

167033

Pollutant:

Hexachlorocyclohexane (HCH), alpha

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for HCH, alpha-. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The BHC, alpha criteria for the protection of human health from the consumption of water and organisms is 0.0039 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113623, Hexachlorocyclohexane (HCH), alpha	Region 3
Carneros Creek (Monterey County)

LOE ID:

166736

Pollutant:

Hexachlorocyclohexane (HCH), alpha

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, alpha-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.013 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan


DECISION ID	113622	Region 3
Carneros Creek (Monterey County)

Pollutant:	Hexachlorocyclohexane (HCH), beta
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	This decision was made by SWRCB staff.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 113622, Hexachlorocyclohexane (HCH), beta	Region 3
Carneros Creek (Monterey County)

LOE ID:

167055

Pollutant:

Hexachlorocyclohexane (HCH), beta

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, beta-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.046 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113622, Hexachlorocyclohexane (HCH), beta	Region 3
Carneros Creek (Monterey County)

LOE ID:

167054

Pollutant:

Hexachlorocyclohexane (HCH), beta

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, beta-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.046 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113622, Hexachlorocyclohexane (HCH), beta	Region 3
Carneros Creek (Monterey County)

LOE ID:

167077

Pollutant:

Hexachlorocyclohexane (HCH), beta

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, beta-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The BHC, beta criteria for the protection of human health from the consumption of water and organisms is 0.014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113622, Hexachlorocyclohexane (HCH), beta	Region 3
Carneros Creek (Monterey County)

LOE ID:

167078

Pollutant:

Hexachlorocyclohexane (HCH), beta

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, beta-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The BHC, beta criteria for the protection of human health from the consumption of water and organisms is 0.014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113622, Hexachlorocyclohexane (HCH), beta	Region 3
Carneros Creek (Monterey County)

LOE ID:

167076

Pollutant:

Hexachlorocyclohexane (HCH), beta

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, beta-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The BHC, beta criteria for the protection of human health from the consumption of water and organisms is 0.014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113622, Hexachlorocyclohexane (HCH), beta	Region 3
Carneros Creek (Monterey County)

LOE ID:

167075

Pollutant:

Hexachlorocyclohexane (HCH), beta

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, beta-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.046 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113622, Hexachlorocyclohexane (HCH), beta	Region 3
Carneros Creek (Monterey County)

LOE ID:

167074

Pollutant:

Hexachlorocyclohexane (HCH), beta

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, beta-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The BHC, beta criteria for the protection of human health from the consumption of water and organisms is 0.014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113622, Hexachlorocyclohexane (HCH), beta	Region 3
Carneros Creek (Monterey County)

LOE ID:

167052

Pollutant:

Hexachlorocyclohexane (HCH), beta

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, beta-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.046 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan


DECISION ID	113614	Region 3
Carneros Creek (Monterey County)

Pollutant:	Imidacloprid
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 113614, Imidacloprid	Region 3
Carneros Creek (Monterey County)

LOE ID:

167171

Pollutant:

Imidacloprid

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Imidacloprid. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Aquatic life should not be affected unacceptably if the 4-day average concentration of Imidacloprid does not exceed 0.016 ug/L. (UC Davis Water Quality Criteria)

Guideline Reference:

Water Quality Criteria Report for Imidacloprid Phase III: Application of the pesticide water quality criteria methodology. Department of Environmental Toxicology. University of California, Davis

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-04-26 to 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 113614, Imidacloprid	Region 3
Carneros Creek (Monterey County)

LOE ID:

167211

Pollutant:

Imidacloprid

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Imidacloprid. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Aquatic life should not be affected unacceptably if the 4-day average concentration of Imidacloprid does not exceed 0.016 ug/L. (UC Davis Water Quality Criteria)

Guideline Reference:

Water Quality Criteria Report for Imidacloprid Phase III: Application of the pesticide water quality criteria methodology. Department of Environmental Toxicology. University of California, Davis

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-04-26 to 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.


DECISION ID	113600	Region 3
Carneros Creek (Monterey County)

Pollutant:	Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Sixteen lines of evidence (LOEs) are available in the administrative record to assess this pollutant. Zero of the 12 water samples exceeded the evaluation guideline for Cold and Warm Freshwater Habitats applied to protect for the aquatic life beneficial use. Zero of 12 water samples exceeded the evaluation guideline applied to protect for the commercial beneficial use, Zero of eight water samples exceeded the evaluation guideline applied to protect for the municipal and domestic supply beneficial use. Although twelve sample(s) were collected (three samples each taken at four separate stations), four sample results had to be thrown out due to quantitation issues. This sample size is insufficient to determine an applicable beneficial use support rating with the power and confidence of the Listing Policy. In accordance with Table 3.1 of the Listing Policy, a minimum of 16 samples is needed to determine if a beneficial use is fully supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero water samples exceed the evaluation guidelines and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 113600, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 3
Carneros Creek (Monterey County)

LOE ID:

167160

Pollutant:

Lindane/gamma Hexachlorocyclohexane (gamma-HCH)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, gamma-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The gamma-BHC (Lindane) criteria for the protection of human health from the consumption of water and organisms is 0.019 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113600, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 3
Carneros Creek (Monterey County)

LOE ID:

167138

Pollutant:

Lindane/gamma Hexachlorocyclohexane (gamma-HCH)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.063 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113600, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 3
Carneros Creek (Monterey County)

LOE ID:

167122

Pollutant:

Lindane/gamma Hexachlorocyclohexane (gamma-HCH)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, gamma-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The gamma-BHC (Lindane) criteria for the protection of human health from the consumption of water and organisms is 0.019 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113600, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 3
Carneros Creek (Monterey County)

LOE ID:

167141

Pollutant:

Lindane/gamma Hexachlorocyclohexane (gamma-HCH)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The criterion maximum concentration to protect aquatic life in freshwater is 0.95 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113600, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 3
Carneros Creek (Monterey County)

LOE ID:

167161

Pollutant:

Lindane/gamma Hexachlorocyclohexane (gamma-HCH)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The criterion maximum concentration to protect aquatic life in freshwater is 0.95 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113600, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 3
Carneros Creek (Monterey County)

LOE ID:

167121

Pollutant:

Lindane/gamma Hexachlorocyclohexane (gamma-HCH)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The criterion maximum concentration to protect aquatic life in freshwater is 0.95 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113600, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 3
Carneros Creek (Monterey County)

LOE ID:

167098

Pollutant:

Lindane/gamma Hexachlorocyclohexane (gamma-HCH)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.063 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113600, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 3
Carneros Creek (Monterey County)

LOE ID:

167094

Pollutant:

Lindane/gamma Hexachlorocyclohexane (gamma-HCH)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The criterion maximum concentration to protect aquatic life in freshwater is 0.95 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113600, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 3
Carneros Creek (Monterey County)

LOE ID:

167099

Pollutant:

Lindane/gamma Hexachlorocyclohexane (gamma-HCH)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.063 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113600, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 3
Carneros Creek (Monterey County)

LOE ID:

167096

Pollutant:

Lindane/gamma Hexachlorocyclohexane (gamma-HCH)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The criterion maximum concentration to protect aquatic life in freshwater is 0.95 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113600, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 3
Carneros Creek (Monterey County)

LOE ID:

167143

Pollutant:

Lindane/gamma Hexachlorocyclohexane (gamma-HCH)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The criterion maximum concentration to protect aquatic life in freshwater is 0.95 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113600, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 3
Carneros Creek (Monterey County)

LOE ID:

167118

Pollutant:

Lindane/gamma Hexachlorocyclohexane (gamma-HCH)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The criterion maximum concentration to protect aquatic life in freshwater is 0.95 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113600, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 3
Carneros Creek (Monterey County)

LOE ID:

167095

Pollutant:

Lindane/gamma Hexachlorocyclohexane (gamma-HCH)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.063 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113600, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 3
Carneros Creek (Monterey County)

LOE ID:

167139

Pollutant:

Lindane/gamma Hexachlorocyclohexane (gamma-HCH)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, gamma-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The gamma-BHC (Lindane) criteria for the protection of human health from the consumption of water and organisms is 0.019 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113600, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 3
Carneros Creek (Monterey County)

LOE ID:

167117

Pollutant:

Lindane/gamma Hexachlorocyclohexane (gamma-HCH)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The criterion maximum concentration to protect aquatic life in freshwater is 0.95 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113600, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 3
Carneros Creek (Monterey County)

LOE ID:

167159

Pollutant:

Lindane/gamma Hexachlorocyclohexane (gamma-HCH)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, gamma-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The gamma-BHC (Lindane) criteria for the protection of human health from the consumption of water and organisms is 0.019 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan


DECISION ID	113601	Region 3
Carneros Creek (Monterey County)

Pollutant:	Malathion
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Fifteen lines of evidence are available in the administrative record to assess this pollutant. Zero of zero samples exceed the evaluation guideline (Faria et al., 2010) applied to protect aquatic life beneficial uses. In this case, some samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. Zero of 13 samples exceed the evaluation guideline for drinking water (USEPA drinking water health advisory). These sample sizes are insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List because applicable water quality standards are not being exceeded. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero samples exceeded the evaluation guidelines and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. These sample sizes are insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:

Line of Evidence (LOE) for Decision ID 113601, Malathion	Region 3
Carneros Creek (Monterey County)

LOE ID:

168957

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Aquatic life should not be affected unacceptably if the four-day average concentration of malathion does not exceed 0.028 ug/L more than once every three years on the average (Faria et al., 2010).

Guideline Reference:

Aquatic life water quality criteria derived via the UC Davis method: l. Organophosphate insecticides. Reviews of Environmental Contamination and Toxicology 216:1-48.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-04-26 to 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 113601, Malathion	Region 3
Carneros Creek (Monterey County)

LOE ID:

168401

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Aquatic life should not be affected unacceptably if the four-day average concentration of malathion does not exceed 0.028 ug/L more than once every three years on the average (Faria et al., 2010).

Guideline Reference:

Aquatic life water quality criteria derived via the UC Davis method: l. Organophosphate insecticides. Reviews of Environmental Contamination and Toxicology 216:1-48.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113601, Malathion	Region 3
Carneros Creek (Monterey County)

LOE ID:

168985

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Aquatic life should not be affected unacceptably if the four-day average concentration of malathion does not exceed 0.028 ug/L more than once every three years on the average (Faria et al., 2010).

Guideline Reference:

Aquatic life water quality criteria derived via the UC Davis method: l. Organophosphate insecticides. Reviews of Environmental Contamination and Toxicology 216:1-48.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113601, Malathion	Region 3
Carneros Creek (Monterey County)

LOE ID:

168526

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The USEPA drinking water health advisory for malathion is 500 ug/L.

Guideline Reference:

2018 Edition of the Drinking Water Standards and Health Advisories

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113601, Malathion	Region 3
Carneros Creek (Monterey County)

LOE ID:

168719

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Surface Water Monitoring Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Aquatic life should not be affected unacceptably if the four-day average concentration of malathion does not exceed 0.028 ug/L more than once every three years on the average (Faria et al., 2010).

Guideline Reference:

Aquatic life water quality criteria derived via the UC Davis method: l. Organophosphate insecticides. Reviews of Environmental Contamination and Toxicology 216:1-48.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-04-26 to 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 113601, Malathion	Region 3
Carneros Creek (Monterey County)

LOE ID:

168794

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The USEPA drinking water health advisory for malathion is 500 ug/L.

Guideline Reference:

2018 Edition of the Drinking Water Standards and Health Advisories

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113601, Malathion	Region 3
Carneros Creek (Monterey County)

LOE ID:

168679

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Aquatic life should not be affected unacceptably if the four-day average concentration of malathion does not exceed 0.028 ug/L more than once every three years on the average (Faria et al., 2010).

Guideline Reference:

Aquatic life water quality criteria derived via the UC Davis method: l. Organophosphate insecticides. Reviews of Environmental Contamination and Toxicology 216:1-48.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113601, Malathion	Region 3
Carneros Creek (Monterey County)

LOE ID:

168882

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Aquatic life should not be affected unacceptably if the four-day average concentration of malathion does not exceed 0.028 ug/L more than once every three years on the average (Faria et al., 2010).

Guideline Reference:

Aquatic life water quality criteria derived via the UC Davis method: l. Organophosphate insecticides. Reviews of Environmental Contamination and Toxicology 216:1-48.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113601, Malathion	Region 3
Carneros Creek (Monterey County)

LOE ID:

168593

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Aquatic life should not be affected unacceptably if the four-day average concentration of malathion does not exceed 0.028 ug/L more than once every three years on the average (Faria et al., 2010).

Guideline Reference:

Aquatic life water quality criteria derived via the UC Davis method: l. Organophosphate insecticides. Reviews of Environmental Contamination and Toxicology 216:1-48.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113601, Malathion	Region 3
Carneros Creek (Monterey County)

LOE ID:

168658

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The USEPA drinking water health advisory for malathion is 500 ug/L.

Guideline Reference:

2018 Edition of the Drinking Water Standards and Health Advisories

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 113601, Malathion	Region 3
Carneros Creek (Monterey County)

LOE ID:

168651

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Aquatic life should not be affected unacceptably if the four-day average concentration of malathion does not exceed 0.028 ug/L more than once every three years on the average (Faria et al., 2010).

Guideline Reference:

Aquatic life water quality criteria derived via the UC Davis method: l. Organophosphate insecticides. Reviews of Environmental Contamination and Toxicology 216:1-48.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113601, Malathion	Region 3
Carneros Creek (Monterey County)

LOE ID:

168881

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The USEPA drinking water health advisory for malathion is 500 ug/L.

Guideline Reference:

2018 Edition of the Drinking Water Standards and Health Advisories

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113601, Malathion	Region 3
Carneros Creek (Monterey County)

LOE ID:

168720

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Aquatic life should not be affected unacceptably if the four-day average concentration of malathion does not exceed 0.028 ug/L more than once every three years on the average (Faria et al., 2010).

Guideline Reference:

Aquatic life water quality criteria derived via the UC Davis method: l. Organophosphate insecticides. Reviews of Environmental Contamination and Toxicology 216:1-48.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113601, Malathion	Region 3
Carneros Creek (Monterey County)

LOE ID:

168888

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The USEPA drinking water health advisory for malathion is 500 ug/L.

Guideline Reference:

2018 Edition of the Drinking Water Standards and Health Advisories

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113601, Malathion	Region 3
Carneros Creek (Monterey County)

LOE ID:

169083

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Aquatic life should not be affected unacceptably if the four-day average concentration of malathion does not exceed 0.028 ug/L more than once every three years on the average (Faria et al., 2010).

Guideline Reference:

Aquatic life water quality criteria derived via the UC Davis method: l. Organophosphate insecticides. Reviews of Environmental Contamination and Toxicology 216:1-48.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan


DECISION ID	130711	Region 3
Carneros Creek (Monterey County)

Pollutant:	Mercury
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Sixteen lines of evidence are available in the administrative record to assess this pollutant. Sixteen LOEs summarize water samples: - Zero of twelve water samples exceed the mercury evaluation guideline (National Recommended Water Quality Criteria, EPA 2016), set to protect for aquatic life beneficial uses. - Zero of twelve water samples exceed the mercury evaluation guideline (California Toxics Rule, 2000), set to protect for the commercial or recreational collection of fish, shellfish, or organisms beneficial use. - Zero of twelve water samples exceed the mercury water quality objective (Basin Plan), set to protect for agricultural supply beneficial use. - Zero of twelve water samples exceed the mercury evaluation guideline (California Toxics Rule, 2000), set to protect for the municipal and domestic supply beneficial use. After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. No water samples exceeded the evaluation guidelines, and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:

Line of Evidence (LOE) for Decision ID 130711, Mercury	Region 3
Carneros Creek (Monterey County)

LOE ID:

169366

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.051 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 130711, Mercury	Region 3
Carneros Creek (Monterey County)

LOE ID:

169232

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.051 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 130711, Mercury	Region 3
Carneros Creek (Monterey County)

LOE ID:

169488

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Waters shall not contain concentrations of chemical constituents known to be deleterious to fish or wildlife (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The Criterion Continuous Concentration for freshwater aquatic life is 0.77 ug/L (National Recommended Water Quality Criteria, EPA 2016)

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 130711, Mercury	Region 3
Carneros Creek (Monterey County)

LOE ID:

169406

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The mercury criteria for the protection of human health from the consumption of water and organisms for mercury is 0.050 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 130711, Mercury	Region 3
Carneros Creek (Monterey County)

LOE ID:

169259

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.051 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 130711, Mercury	Region 3
Carneros Creek (Monterey County)

LOE ID:

169226

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The mercury criteria for the protection of human health from the consumption of water and organisms for mercury is 0.050 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 130711, Mercury	Region 3
Carneros Creek (Monterey County)

LOE ID:

169153

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Waters shall not contain concentrations of chemical constituents known to be deleterious to fish or wildlife (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The Criterion Continuous Concentration for freshwater aquatic life is 0.77 ug/L (National Recommended Water Quality Criteria, EPA 2016)

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 130711, Mercury	Region 3
Carneros Creek (Monterey County)

LOE ID:

169121

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Waters shall not contain concentrations of chemical constituents known to be deleterious to fish or wildlife (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The Criterion Continuous Concentration for freshwater aquatic life is 0.77 ug/L (National Recommended Water Quality Criteria, EPA 2016)

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 130711, Mercury	Region 3
Carneros Creek (Monterey County)

LOE ID:

169131

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The mercury criteria for the protection of human health from the consumption of water and organisms for mercury is 0.050 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 130711, Mercury	Region 3
Carneros Creek (Monterey County)

LOE ID:

169528

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Waters shall not contain concentrations of chemical constituents known to be deleterious to fish or wildlife (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The Criterion Continuous Concentration for freshwater aquatic life is 0.77 ug/L (National Recommended Water Quality Criteria, EPA 2016)

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 130711, Mercury	Region 3
Carneros Creek (Monterey County)

LOE ID:

169530

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.051 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 130711, Mercury	Region 3
Carneros Creek (Monterey County)

LOE ID:

168831

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Waters shall not contain concentrations of chemical constituents known to be deleterious to fish or wildlife (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The Criterion Continuous Concentration for freshwater aquatic life is 0.77 ug/L (National Recommended Water Quality Criteria, EPA 2016)

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 130711, Mercury	Region 3
Carneros Creek (Monterey County)

LOE ID:

169432

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Waters shall not contain concentrations of chemical constituents known to be deleterious to fish or wildlife (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The Criterion Continuous Concentration for freshwater aquatic life is 0.77 ug/L (National Recommended Water Quality Criteria, EPA 2016)

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 130711, Mercury	Region 3
Carneros Creek (Monterey County)

LOE ID:

169428

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Waters shall not contain concentrations of chemical constituents known to be deleterious to fish or wildlife (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The Criterion Continuous Concentration for freshwater aquatic life is 0.77 ug/L (National Recommended Water Quality Criteria, EPA 2016)

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 130711, Mercury	Region 3
Carneros Creek (Monterey County)

LOE ID:

169158

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Waters shall not contain concentrations of chemical constituents known to be deleterious to fish or wildlife (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The Criterion Continuous Concentration for freshwater aquatic life is 0.77 ug/L (National Recommended Water Quality Criteria, EPA 2016)

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 130711, Mercury	Region 3
Carneros Creek (Monterey County)

LOE ID:

169489

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The mercury criteria for the protection of human health from the consumption of water and organisms for mercury is 0.050 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan


DECISION ID	113617	Region 3
Carneros Creek (Monterey County)

Pollutant:	Methidathion
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 113617, Methidathion	Region 3
Carneros Creek (Monterey County)

LOE ID:

169690

Pollutant:

Methidathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Based on USEPA IRIS reference dose (RfD) as a drinking water level, the drinking water health advisory level for methidathion is 0.7 ug/L. This was calculated assuming 70 kg body weight, 2 liters/day water consumption, and 20% relative source contribution from drinking water. An additional uncertainty factor of 10 is used for Class C carcinogens.

Guideline Reference:

IRIS Database Calculations (summary)

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 113617, Methidathion	Region 3
Carneros Creek (Monterey County)

LOE ID:

169736

Pollutant:

Methidathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Methidathion is the USEPA Aquatic Life Benchmark of 0.66 ug/L for a invertebrate (acute).

Guideline Reference:

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113617, Methidathion	Region 3
Carneros Creek (Monterey County)

LOE ID:

169565

Pollutant:

Methidathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Methidathion is the USEPA Aquatic Life Benchmark of 0.66 ug/L for a invertebrate (acute).

Guideline Reference:

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):


DECISION ID	113615	Region 3
Carneros Creek (Monterey County)

Pollutant:	Methiocarb
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 113615, Methiocarb	Region 3
Carneros Creek (Monterey County)

LOE ID:

169884

Pollutant:

Methiocarb

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Methiocarb is the USEPA Aquatic Life Benchmark of 2.75 ug/L for a invertebrate (chronic).

Guideline Reference:

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113615, Methiocarb	Region 3
Carneros Creek (Monterey County)

LOE ID:

169930

Pollutant:

Methiocarb

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Methiocarb is the USEPA Aquatic Life Benchmark of 2.75 ug/L for a invertebrate (chronic).

Guideline Reference:

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):


DECISION ID	113616	Region 3
Carneros Creek (Monterey County)

Pollutant:	Methomyl
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 113616, Methomyl	Region 3
Carneros Creek (Monterey County)

LOE ID:

170161

Pollutant:

Methomyl

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Methomyl is the USEPA Aquatic Life Benchmark of 0.7 ug/L for an invertebrate (chronic).

Guideline Reference:

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113616, Methomyl	Region 3
Carneros Creek (Monterey County)

LOE ID:

169871

Pollutant:

Methomyl

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The life-time health advisory for methomyl is 200 ug/L (USEPA 2018).

Guideline Reference:

2018 Edition of the Drinking Water Standards and Health Advisories

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 113616, Methomyl	Region 3
Carneros Creek (Monterey County)

LOE ID:

170162

Pollutant:

Methomyl

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Methomyl is the USEPA Aquatic Life Benchmark of 0.7 ug/L for an invertebrate (chronic).

Guideline Reference:

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):


DECISION ID	113602	Region 3
Carneros Creek (Monterey County)

Pollutant:	Methoxychlor
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	This decision was made by SWRCB staff.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 113602, Methoxychlor	Region 3
Carneros Creek (Monterey County)

LOE ID:

170493

Pollutant:

Methoxychlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The California Maximum Contaminant Level for Methoxychlor is 0.03 mg/L (California Code of Regulations, Title 22).

Guideline Reference:

California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113602, Methoxychlor	Region 3
Carneros Creek (Monterey County)

LOE ID:

170472

Pollutant:

Methoxychlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The California Maximum Contaminant Level for Methoxychlor is 0.03 mg/L (California Code of Regulations, Title 22).

Guideline Reference:

California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113602, Methoxychlor	Region 3
Carneros Creek (Monterey County)

LOE ID:

170452

Pollutant:

Methoxychlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Methoxychlor. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The USEPA national ambient water quality criterion for freshwater aquatic life Criterion Continuous Concentration (CCC) expressed as a 4-day average for methoxychlor is 0.03 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113602, Methoxychlor	Region 3
Carneros Creek (Monterey County)

LOE ID:

170495

Pollutant:

Methoxychlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Methoxychlor. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The USEPA national ambient water quality criterion for freshwater aquatic life Criterion Continuous Concentration (CCC) expressed as a 4-day average for methoxychlor is 0.03 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113602, Methoxychlor	Region 3
Carneros Creek (Monterey County)

LOE ID:

170451

Pollutant:

Methoxychlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Methoxychlor. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The USEPA national ambient water quality criterion for freshwater aquatic life Criterion Continuous Concentration (CCC) expressed as a 4-day average for methoxychlor is 0.03 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113602, Methoxychlor	Region 3
Carneros Creek (Monterey County)

LOE ID:

170470

Pollutant:

Methoxychlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Methoxychlor. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The USEPA national ambient water quality criterion for freshwater aquatic life Criterion Continuous Concentration (CCC) expressed as a 4-day average for methoxychlor is 0.03 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113602, Methoxychlor	Region 3
Carneros Creek (Monterey County)

LOE ID:

170512

Pollutant:

Methoxychlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Methoxychlor. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The USEPA national ambient water quality criterion for freshwater aquatic life Criterion Continuous Concentration (CCC) expressed as a 4-day average for methoxychlor is 0.03 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113602, Methoxychlor	Region 3
Carneros Creek (Monterey County)

LOE ID:

170513

Pollutant:

Methoxychlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Methoxychlor. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The USEPA national ambient water quality criterion for freshwater aquatic life Criterion Continuous Concentration (CCC) expressed as a 4-day average for methoxychlor is 0.03 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113602, Methoxychlor	Region 3
Carneros Creek (Monterey County)

LOE ID:

170514

Pollutant:

Methoxychlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The California Maximum Contaminant Level for Methoxychlor is 0.03 mg/L (California Code of Regulations, Title 22).

Guideline Reference:

California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113602, Methoxychlor	Region 3
Carneros Creek (Monterey County)

LOE ID:

170492

Pollutant:

Methoxychlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Methoxychlor. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The USEPA national ambient water quality criterion for freshwater aquatic life Criterion Continuous Concentration (CCC) expressed as a 4-day average for methoxychlor is 0.03 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113602, Methoxychlor	Region 3
Carneros Creek (Monterey County)

LOE ID:

170474

Pollutant:

Methoxychlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Methoxychlor. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The USEPA national ambient water quality criterion for freshwater aquatic life Criterion Continuous Concentration (CCC) expressed as a 4-day average for methoxychlor is 0.03 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113602, Methoxychlor	Region 3
Carneros Creek (Monterey County)

LOE ID:

170515

Pollutant:

Methoxychlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The California Maximum Contaminant Level for Methoxychlor is 0.03 mg/L (California Code of Regulations, Title 22).

Guideline Reference:

California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan


DECISION ID	113605	Region 3
Carneros Creek (Monterey County)

Pollutant:	Oxamyl (Vydate)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 113605, Oxamyl (Vydate)	Region 3
Carneros Creek (Monterey County)

LOE ID:

173938

Pollutant:

Oxamyl (Vydate)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Oxamyl is the USEPA Aquatic Life Benchmark of 27 ug/L for an invertebrate (chronic).

Guideline Reference:

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113605, Oxamyl (Vydate)	Region 3
Carneros Creek (Monterey County)

LOE ID:

173907

Pollutant:

Oxamyl (Vydate)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Oxamyl is the USEPA Aquatic Life Benchmark of 27 ug/L for an invertebrate (chronic).

Guideline Reference:

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113605, Oxamyl (Vydate)	Region 3
Carneros Creek (Monterey County)

LOE ID:

174229

Pollutant:

Oxamyl (Vydate)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The California Maximum Contaminant Level for Oxamyl is 0.05 mg/L (California Code of Regulations, Title 22).

Guideline Reference:

California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.


DECISION ID	113609	Region 3
Carneros Creek (Monterey County)

Pollutant:	PCBs (Polychlorinated biphenyls)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 113609, PCBs (Polychlorinated biphenyls)	Region 3
Carneros Creek (Monterey County)

LOE ID:

176465

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.014 ug/L. This value corresponds to the sum of aroclors 1242, 1254, 1221, 1232, 1248, 1260, and 1016 (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113609, PCBs (Polychlorinated biphenyls)	Region 3
Carneros Creek (Monterey County)

LOE ID:

176486

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113609, PCBs (Polychlorinated biphenyls)	Region 3
Carneros Creek (Monterey County)

LOE ID:

176490

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113609, PCBs (Polychlorinated biphenyls)	Region 3
Carneros Creek (Monterey County)

LOE ID:

176466

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113609, PCBs (Polychlorinated biphenyls)	Region 3
Carneros Creek (Monterey County)

LOE ID:

176512

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113609, PCBs (Polychlorinated biphenyls)	Region 3
Carneros Creek (Monterey County)

LOE ID:

176510

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113609, PCBs (Polychlorinated biphenyls)	Region 3
Carneros Creek (Monterey County)

LOE ID:

176509

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113609, PCBs (Polychlorinated biphenyls)	Region 3
Carneros Creek (Monterey County)

LOE ID:

176487

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan


DECISION ID	126238	Region 3
Carneros Creek (Monterey County)

Pollutant:	Temperature, water
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the Clean Water Act (CWA) section 303(d) List under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status. A total of 13 lines of evidence are available in the administrative record to assess this pollutant. A total of 71 of 947 samples exceed the evaluation guideline (Moyle 1976) applied to protect the cold freshwater habitat beneficial use. After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. A total of 71 of 947 samples exceed the evaluation guideline applied to protect the cold freshwater habitat beneficial use and this does not exceed the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 126238, Temperature, water	Region 3
Carneros Creek (Monterey County)

LOE ID:

52976

Pollutant:

Temperature, water

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Central Coast Water Board Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Water Temperature.

Data Reference:

Data from Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program, Jan. 2007-Jul. 2009

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The optimum range for growth and completion of most life stages of rainbow trout is 13-21 degrees Celsius (Moyle 1976).

Guideline Reference:

Quality Assurance Project Plan, Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program. May 15, 2009, Ver.1.3

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:

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 126238, Temperature, water	Region 3
Carneros Creek (Monterey County)

LOE ID:

49734

Pollutant:

Temperature, water

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

The optimum range for growth and completion of most life stages of rainbow trout is 13-21 degrees Celsius (Moyle 1976).

Guideline Reference:

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Spatial Representation:

Data for this line of evidence for Carneros Creek (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):

Line of Evidence (LOE) for Decision ID 126238, Temperature, water	Region 3
Carneros Creek (Monterey County)

LOE ID:

26676

Pollutant:

Temperature, water

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for Carneros Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Water Temperature.

Data Reference:

Final Data File used for assessment: CCAMP Water Quality Data_file1

Final Data File used for assessment: CCAMP Water Quality Data_file2

Final Data File used for assessment: CCAMP Water Quality Data_file3

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (General Objective in Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)

Evaluation Guideline:

Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129).

Guideline Reference:

Final Data File used for assessment: CCAMP Salinas Toxicity data

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:

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 126238, Temperature, water	Region 3
Carneros Creek (Monterey County)

LOE ID:

26673

Pollutant:

Temperature, water

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Central Coast Regional Board Staff assessed CCAMP Salinas (Salinas) data for Carneros Creek to determine beneficial use support and results are as follows: 1 of 22 samples exceed the criterion for Water Temperature.

Data Reference:

Final Data File used for assessment: CCAMP 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:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)

Evaluation Guideline:

Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129).

Guideline Reference:

Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006

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:

Environmental Conditions:

Staff is not aware of any special conditions that might effect interpretation of the data.

QAPP Information:

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 126238, Temperature, water	Region 3
Carneros Creek (Monterey County)

LOE ID:

26706

Pollutant:

Temperature, water

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)

Evaluation Guideline:

Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129).

Guideline Reference:

Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Field Data from 2006

Spatial Representation:

Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306-CARNE-1 - Carneros Creek]

Temporal Representation:

Data was collected on a single day 5/1/2004. Coastal Watershed Council Snapshot Day Monitoring is conducted annually.

Environmental Conditions:

Staff is not aware of any special conditions that might effect interpretation of the data.

QAPP Information:

State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 126238, Temperature, water	Region 3
Carneros Creek (Monterey County)

LOE ID:

26688

Pollutant:

Temperature, water

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

189

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Central Coast Regional Board Staff assessed National Estuarine Research Reserve Monitoring Program (R3_ESNERR) data for Carneros Creek to determine beneficial use support and results are as follows: 35 of 189 samples exceed the criterion for Water Tempera

Data Reference:

Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) 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:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)

Evaluation Guideline:

Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129).

Guideline Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

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 Information Reference(s):

Line of Evidence (LOE) for Decision ID 126238, Temperature, water	Region 3
Carneros Creek (Monterey County)

LOE ID:

216861

Pollutant:

Temperature, water

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 24 samples exceeded the water quality threshold for Temperature.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The optimum range for growth and completion of most life stages of rainbow trout is 13-21 degrees Celsius (Moyle 1976).

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

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):

Line of Evidence (LOE) for Decision ID 126238, Temperature, water	Region 3
Carneros Creek (Monterey County)

LOE ID:

216828

Pollutant:

Temperature, water

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 25 samples exceeded the water quality threshold for Temperature.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The optimum range for growth and completion of most life stages of rainbow trout is 13-21 degrees Celsius (Moyle 1976).

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-01-03 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 126238, Temperature, water	Region 3
Carneros Creek (Monterey County)

LOE ID:

216945

Pollutant:

Temperature, water

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 10 samples exceeded the water quality threshold for Temperature.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The optimum range for growth and completion of most life stages of rainbow trout is 13-21 degrees Celsius (Moyle 1976).

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

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):

Line of Evidence (LOE) for Decision ID 126238, Temperature, water	Region 3
Carneros Creek (Monterey County)

LOE ID:

216992

Pollutant:

Temperature, water

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The optimum range for growth and completion of most life stages of rainbow trout is 13-21 degrees Celsius (Moyle 1976).

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

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):

Line of Evidence (LOE) for Decision ID 126238, Temperature, water	Region 3
Carneros Creek (Monterey County)

LOE ID:

216951

Pollutant:

Temperature, water

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 0 of 21 samples exceeded the water quality threshold for Temperature.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The optimum range for growth and completion of most life stages of rainbow trout is 13-21 degrees Celsius (Moyle 1976).

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

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):

Line of Evidence (LOE) for Decision ID 126238, Temperature, water	Region 3
Carneros Creek (Monterey County)

LOE ID:

216710

Pollutant:

Temperature, water

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed SWAMP RWB3 CCAMP Salinas Rotation data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 5 of 20 samples exceeded the water quality threshold for Temperature.

Data Reference:

Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The optimum range for growth and completion of most life stages of rainbow trout is 13-21 degrees Celsius (Moyle 1976).

Guideline Reference:

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

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):

Line of Evidence (LOE) for Decision ID 126238, Temperature, water	Region 3
Carneros Creek (Monterey County)

LOE ID:

26693

Pollutant:

Temperature, water

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

602

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for Carneros Creek to determine beneficial use support and results are as follows: 30 of 602 samples exceed the criterion for Water Temperature.

Data Reference:

Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A

Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)

Evaluation Guideline:

Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129).

Guideline Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

Spatial Representation:

Temporal Representation:

Data was collected over the time period 10/4/2000-2/11/2007.

Environmental Conditions:

Staff is not aware of any special conditions that might effect interpretation of the data.

QAPP Information:

Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data.

QAPP Information Reference(s):


DECISION ID	113624	Region 3
Carneros Creek (Monterey County)

Pollutant:	Thiobencarb
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Twelve lines of evidence (LOEs) are available in the administrative record to assess this pollutant. Zero of the 12 water samples exceeded the evaluation guideline for Cold and Warm Freshwater Habitats applied to protect for the aquatic life beneficial use. Zero of 12 water samples exceeded the evaluation guideline applied to protect for the municipal and domestic supply beneficial use. This sample size is insufficient to determine an applicable beneficial use support rating with the power and confidence of the Listing Policy. In accordance with Table 3.1 of the Listing Policy, a minimum of 16 samples is needed to determine if a beneficial use is fully supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero water samples exceed the evaluation guidelines and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:

Line of Evidence (LOE) for Decision ID 113624, Thiobencarb	Region 3
Carneros Creek (Monterey County)

LOE ID:

156116

Pollutant:

Thiobencarb

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Thiobencarb is the USEPA Aquatic Life Benchmark of 1 ug/L for a invertebrate (acute).

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

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):

Line of Evidence (LOE) for Decision ID 113624, Thiobencarb	Region 3
Carneros Creek (Monterey County)

LOE ID:

156169

Pollutant:

Thiobencarb

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Thiobencarb is the USEPA Aquatic Life Benchmark of 1 ug/L for a invertebrate (acute).

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113624, Thiobencarb	Region 3
Carneros Creek (Monterey County)

LOE ID:

156176

Pollutant:

Thiobencarb

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Thiobencarb is the USEPA Aquatic Life Benchmark of 1 ug/L for a invertebrate (acute).

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113624, Thiobencarb	Region 3
Carneros Creek (Monterey County)

LOE ID:

156179

Pollutant:

Thiobencarb

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The California Maximum Contaminant Level for Thiobencarb is 0.07 mg/L (California Code of Regulations, Title 22).

Guideline Reference:

California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113624, Thiobencarb	Region 3
Carneros Creek (Monterey County)

LOE ID:

156185

Pollutant:

Thiobencarb

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Thiobencarb is the USEPA Aquatic Life Benchmark of 1 ug/L for a invertebrate (acute).

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

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):

Line of Evidence (LOE) for Decision ID 113624, Thiobencarb	Region 3
Carneros Creek (Monterey County)

LOE ID:

156177

Pollutant:

Thiobencarb

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Thiobencarb is the USEPA Aquatic Life Benchmark of 1 ug/L for a invertebrate (acute).

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113624, Thiobencarb	Region 3
Carneros Creek (Monterey County)

LOE ID:

156181

Pollutant:

Thiobencarb

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Thiobencarb is the USEPA Aquatic Life Benchmark of 1 ug/L for a invertebrate (acute).

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113624, Thiobencarb	Region 3
Carneros Creek (Monterey County)

LOE ID:

156172

Pollutant:

Thiobencarb

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Thiobencarb is the USEPA Aquatic Life Benchmark of 1 ug/L for a invertebrate (acute).

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113624, Thiobencarb	Region 3
Carneros Creek (Monterey County)

LOE ID:

156441

Pollutant:

Thiobencarb

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, General Objective Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for Thiobencarb is the USEPA Aquatic Life Benchmark of 1 ug/L for a invertebrate (acute).

Guideline Reference:

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113624, Thiobencarb	Region 3
Carneros Creek (Monterey County)

LOE ID:

156180

Pollutant:

Thiobencarb

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The California Maximum Contaminant Level for Thiobencarb is 0.07 mg/L (California Code of Regulations, Title 22).

Guideline Reference:

California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113624, Thiobencarb	Region 3
Carneros Creek (Monterey County)

LOE ID:

156120

Pollutant:

Thiobencarb

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The California Maximum Contaminant Level for Thiobencarb is 0.07 mg/L (California Code of Regulations, Title 22).

Guideline Reference:

California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113624, Thiobencarb	Region 3
Carneros Creek (Monterey County)

LOE ID:

156121

Pollutant:

Thiobencarb

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The California Maximum Contaminant Level for Thiobencarb is 0.07 mg/L (California Code of Regulations, Title 22).

Guideline Reference:

California MCLs - Title 17 and Title 22 documents for 2019 - California Regulations Related to Drinking Water

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan


DECISION ID	113610	Region 3
Carneros Creek (Monterey County)

Pollutant:	Toxaphene
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Sixteen lines of evidence (LOEs) are available in the administrative record to assess this pollutant. Zero of zero water samples exceeded the evaluation guideline for Cold and Warm Freshwater Habitats applied to protect for the aquatic life beneficial use. Although twelve samples were collected (three samples each taken at four separate stations), all results had to be thrown out due to quantitation issues. Zero of zero water samples exceeded the evaluation guideline applied to protect for the commercial beneficial use, though twelve samples were collected (three samples each taken at four separate stations), all results had to be thrown out due to quantitation issues. Zero of zero water samples exceeded the evaluation guideline applied to protect for the municipal and domestic supply beneficial use, though twelve samples were collected (three samples each taken at four separate stations), all results had to be thrown out due to quantitation issues. This sample size is insufficient to determine an applicable beneficial use support rating with the power and confidence of the Listing Policy. In accordance with Table 3.1 of the Listing Policy, a minimum of 16 samples is needed to determine if a beneficial use is fully supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero water samples exceed the evaluation guidelines and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 113610, Toxaphene	Region 3
Carneros Creek (Monterey County)

LOE ID:

183529

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.00075 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113610, Toxaphene	Region 3
Carneros Creek (Monterey County)

LOE ID:

183548

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Toxaphene criteria for the protection of human health from the consumption of water and organisms is 0.00073 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113610, Toxaphene	Region 3
Carneros Creek (Monterey County)

LOE ID:

183278

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Toxaphene criteria for the protection of human health from the consumption of water and organisms is 0.00073 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113610, Toxaphene	Region 3
Carneros Creek (Monterey County)

LOE ID:

183570

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The criterion continuous concentration to protect aquatic life in freshwater is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113610, Toxaphene	Region 3
Carneros Creek (Monterey County)

LOE ID:

183528

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.00075 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113610, Toxaphene	Region 3
Carneros Creek (Monterey County)

LOE ID:

183549

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The criterion continuous concentration to protect aquatic life in freshwater is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113610, Toxaphene	Region 3
Carneros Creek (Monterey County)

LOE ID:

183567

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Toxaphene criteria for the protection of human health from the consumption of water and organisms is 0.00073 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113610, Toxaphene	Region 3
Carneros Creek (Monterey County)

LOE ID:

183299

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The criterion continuous concentration to protect aquatic life in freshwater is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113610, Toxaphene	Region 3
Carneros Creek (Monterey County)

LOE ID:

183571

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The criterion continuous concentration to protect aquatic life in freshwater is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113610, Toxaphene	Region 3
Carneros Creek (Monterey County)

LOE ID:

183550

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.00075 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113610, Toxaphene	Region 3
Carneros Creek (Monterey County)

LOE ID:

183281

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Toxaphene criteria for the protection of human health from the consumption of water and organisms is 0.00073 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113610, Toxaphene	Region 3
Carneros Creek (Monterey County)

LOE ID:

183569

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The criterion continuous concentration to protect aquatic life in freshwater is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113610, Toxaphene	Region 3
Carneros Creek (Monterey County)

LOE ID:

183568

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The criterion continuous concentration to protect aquatic life in freshwater is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113610, Toxaphene	Region 3
Carneros Creek (Monterey County)

LOE ID:

183282

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The criterion continuous concentration to protect aquatic life in freshwater is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113610, Toxaphene	Region 3
Carneros Creek (Monterey County)

LOE ID:

183530

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The criterion continuous concentration to protect aquatic life in freshwater is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113610, Toxaphene	Region 3
Carneros Creek (Monterey County)

LOE ID:

183551

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption is 0.00075 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan


DECISION ID	113612	Region 3
Carneros Creek (Monterey County)

Pollutant:	Zinc
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the Clean Water Act (CWA) section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. A total of two lines of evidence are available in the administrative record to assess this pollutant. A total of zero of 20 samples exceed the water quality objective for the cold freshwater habitat beneficial use and zero of 20 samples exceed the water quality objective for the municipal and domestic supply beneficial use. After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. A total of zero of 20 samples exceed the water quality objective for the cold freshwater habitat beneficial use and zero of 20 samples exceed the water quality objective for the municipal and domestic supply beneficial use. This does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:

Line of Evidence (LOE) for Decision ID 113612, Zinc	Region 3
Carneros Creek (Monterey County)

LOE ID:

182871

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

California Toxics Rule (CTR) lists criterion continuous concentrations to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306CAR)

Temporal Representation:

The samples were collected between the dates of 2012-01-11 and 2018-12-11

Environmental Conditions:

QAPP Information:

SWAMP 2008, SWAMP 2017

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 113612, Zinc	Region 3
Carneros Creek (Monterey County)

LOE ID:

182702

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306CAR)

Temporal Representation:

The samples were collected between the dates of 2012-01-11 and 2018-12-11

Environmental Conditions:

QAPP Information:

SWAMP 2008, SWAMP 2017

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program


DECISION ID	113589	Region 3
Carneros Creek (Monterey County)

Pollutant:	alpha-Endosulfan (Endosulfan 1)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	This decision was made by SWRCB staff.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 113589, alpha-Endosulfan (Endosulfan 1)	Region 3
Carneros Creek (Monterey County)

LOE ID:

165289

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk of alpha-endosulfan associated with organism consumption is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113589, alpha-Endosulfan (Endosulfan 1)	Region 3
Carneros Creek (Monterey County)

LOE ID:

165313

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Toxics Rule criteria for alpha-endosulfan to protect human health for waters that include the designated use of MUN is 110 ug/L.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113589, alpha-Endosulfan (Endosulfan 1)	Region 3
Carneros Creek (Monterey County)

LOE ID:

165314

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Toxics Rule lists criterion continuous concentrations for alpha-endosulfan to protect aquatic life in freshwater. The criteria is 0.056 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113589, alpha-Endosulfan (Endosulfan 1)	Region 3
Carneros Creek (Monterey County)

LOE ID:

165357

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk of alpha-endosulfan associated with organism consumption is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113589, alpha-Endosulfan (Endosulfan 1)	Region 3
Carneros Creek (Monterey County)

LOE ID:

165360

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Toxics Rule criteria for alpha-endosulfan to protect human health for waters that include the designated use of MUN is 110 ug/L.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113589, alpha-Endosulfan (Endosulfan 1)	Region 3
Carneros Creek (Monterey County)

LOE ID:

165334

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk of alpha-endosulfan associated with organism consumption is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113589, alpha-Endosulfan (Endosulfan 1)	Region 3
Carneros Creek (Monterey County)

LOE ID:

165336

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113589, alpha-Endosulfan (Endosulfan 1)	Region 3
Carneros Creek (Monterey County)

LOE ID:

165383

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113589, alpha-Endosulfan (Endosulfan 1)	Region 3
Carneros Creek (Monterey County)

LOE ID:

165358

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Toxics Rule criteria for alpha-endosulfan to protect human health for waters that include the designated use of MUN is 110 ug/L.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113589, alpha-Endosulfan (Endosulfan 1)	Region 3
Carneros Creek (Monterey County)

LOE ID:

165382

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Toxics Rule criteria for alpha-endosulfan to protect human health for waters that include the designated use of MUN is 110 ug/L.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113589, alpha-Endosulfan (Endosulfan 1)	Region 3
Carneros Creek (Monterey County)

LOE ID:

165335

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113589, alpha-Endosulfan (Endosulfan 1)	Region 3
Carneros Creek (Monterey County)

LOE ID:

165337

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113589, alpha-Endosulfan (Endosulfan 1)	Region 3
Carneros Creek (Monterey County)

LOE ID:

165288

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113589, alpha-Endosulfan (Endosulfan 1)	Region 3
Carneros Creek (Monterey County)

LOE ID:

165310

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113589, alpha-Endosulfan (Endosulfan 1)	Region 3
Carneros Creek (Monterey County)

LOE ID:

165333

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113589, alpha-Endosulfan (Endosulfan 1)	Region 3
Carneros Creek (Monterey County)

LOE ID:

165287

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk of alpha-endosulfan associated with organism consumption is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan


DECISION ID	113607	Region 3
Carneros Creek (Monterey County)

Pollutant:	beta-Endosulfan (Endosulfan 2)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	This decision was made by SWRCB staff.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 113607, beta-Endosulfan (Endosulfan 2)	Region 3
Carneros Creek (Monterey County)

LOE ID:

165500

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk of beta-endosulfan associated with organism consumption is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113607, beta-Endosulfan (Endosulfan 2)	Region 3
Carneros Creek (Monterey County)

LOE ID:

165410

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endosulfan II. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Toxics Rule lists criterion continuous concentrations for beta-endosulfan to protect aquatic life in freshwater. The criteria is 0.056 ug/L. A CMC or CCC derived using the 1980 Guidelines was derived to be used as an instantaneous maximum. If assessment is to be done using an averaging period, the values given should be divided by 2 to obtain a value that is more comparable to a CMC or CCC derived using the 1985 Guidelines.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113607, beta-Endosulfan (Endosulfan 2)	Region 3
Carneros Creek (Monterey County)

LOE ID:

165433

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endosulfan II. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113607, beta-Endosulfan (Endosulfan 2)	Region 3
Carneros Creek (Monterey County)

LOE ID:

165457

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk of beta-endosulfan associated with organism consumption is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113607, beta-Endosulfan (Endosulfan 2)	Region 3
Carneros Creek (Monterey County)

LOE ID:

165406

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Toxics Rule criteria for beta-endosulfan to protect human health for waters that include the designated use of MUN is 110 ug/L.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113607, beta-Endosulfan (Endosulfan 2)	Region 3
Carneros Creek (Monterey County)

LOE ID:

165432

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endosulfan II. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113607, beta-Endosulfan (Endosulfan 2)	Region 3
Carneros Creek (Monterey County)

LOE ID:

165477

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endosulfan II. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113607, beta-Endosulfan (Endosulfan 2)	Region 3
Carneros Creek (Monterey County)

LOE ID:

165454

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk of beta-endosulfan associated with organism consumption is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113607, beta-Endosulfan (Endosulfan 2)	Region 3
Carneros Creek (Monterey County)

LOE ID:

165456

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endosulfan II. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113607, beta-Endosulfan (Endosulfan 2)	Region 3
Carneros Creek (Monterey County)

LOE ID:

165458

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Toxics Rule criteria for beta-endosulfan to protect human health for waters that include the designated use of MUN is 110 ug/L.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113607, beta-Endosulfan (Endosulfan 2)	Region 3
Carneros Creek (Monterey County)

LOE ID:

165455

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endosulfan II. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113607, beta-Endosulfan (Endosulfan 2)	Region 3
Carneros Creek (Monterey County)

LOE ID:

165501

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk of beta-endosulfan associated with organism consumption is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113607, beta-Endosulfan (Endosulfan 2)	Region 3
Carneros Creek (Monterey County)

LOE ID:

165434

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endosulfan II. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113607, beta-Endosulfan (Endosulfan 2)	Region 3
Carneros Creek (Monterey County)

LOE ID:

165480

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Toxics Rule criteria for beta-endosulfan to protect human health for waters that include the designated use of MUN is 110 ug/L.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113607, beta-Endosulfan (Endosulfan 2)	Region 3
Carneros Creek (Monterey County)

LOE ID:

165407

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endosulfan II. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113607, beta-Endosulfan (Endosulfan 2)	Region 3
Carneros Creek (Monterey County)

LOE ID:

165409

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Toxics Rule criteria for beta-endosulfan to protect human health for waters that include the designated use of MUN is 110 ug/L.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan


DECISION ID	113587	Region 3
Carneros Creek (Monterey County)

Pollutant:	Chlorpyrifos
Final Listing Decision:	List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Sources:	No Source Analysis Available
Expected TMDL Completion Date:	2025
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Ten lines of evidence are available in the administrative record to assess this pollutant. Six of 13 water samples exceeded the aquatic life evaluation guideline (Siepmann and Finlayson 2000, with minor corrections to significant figures as described in Beaulaurier et al., 2005). Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Six of 13 water samples exceeded the evaluation guideline, and this exceeds the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:

Line of Evidence (LOE) for Decision ID 113587, Chlorpyrifos	Region 3
Carneros Creek (Monterey County)

LOE ID:

161885

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 2 of 3 samples exceeded the water quality threshold for Chlorpyrifos.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The freshwater criterion continuous concentration to protect aquatic organisms is 0.015 ug/L (Siepmann and Finlayson 2000, with minor corrections to significant figures as described in Beaulaurier et al., 2005).

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game (with minor corrections to significant figures as described in Beaulaurier et al., 2005).

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113587, Chlorpyrifos	Region 3
Carneros Creek (Monterey County)

LOE ID:

161437

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 3 samples exceeded the water quality threshold for Chlorpyrifos.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113587, Chlorpyrifos	Region 3
Carneros Creek (Monterey County)

LOE ID:

161689

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 113587, Chlorpyrifos	Region 3
Carneros Creek (Monterey County)

LOE ID:

161383

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113587, Chlorpyrifos	Region 3
Carneros Creek (Monterey County)

LOE ID:

161841

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113587, Chlorpyrifos	Region 3
Carneros Creek (Monterey County)

LOE ID:

161592

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113587, Chlorpyrifos	Region 3
Carneros Creek (Monterey County)

LOE ID:

161886

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113587, Chlorpyrifos	Region 3
Carneros Creek (Monterey County)

LOE ID:

161669

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 113587, Chlorpyrifos	Region 3
Carneros Creek (Monterey County)

LOE ID:

161475

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113587, Chlorpyrifos	Region 3
Carneros Creek (Monterey County)

LOE ID:

161615

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan


DECISION ID	113588	Region 3
Carneros Creek (Monterey County)

Pollutant:	Copper
Final Listing Decision:	List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Sources:	No Source Analysis Available
Expected TMDL Completion Date:	2035
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the Clean Water Act (CWA) section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. A total of 19 lines of evidence are available in the administrative record to assess this pollutant. A total of three of 25 samples exceed the water quality objective for the cold freshwater habitat beneficial use, zero of 12 samples exceed the dissolved fraction water quality objective and zero of 32 samples exceed the total fraction water quality objective for the municipal and domestic supply beneficial use and three of 25 samples exceed the water quality objective for the warm freshwater habitat beneficial use. After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. A total of three of 25 samples exceed the water quality objective for the cold freshwater habitat beneficial use, zero of 12 samples exceed the dissolved fraction water quality objective and zero of 32 samples exceed the total fraction water quality objective for the municipal and domestic supply beneficial use and three of 25 samples exceed the water quality objective for the warm freshwater habitat beneficial use. This exceeds the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:

Line of Evidence (LOE) for Decision ID 113588, Copper	Region 3
Carneros Creek (Monterey County)

LOE ID:

162487

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Copper criteria for the protection of human health from the consumption of water and organisms is 1.300 mg/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113588, Copper	Region 3
Carneros Creek (Monterey County)

LOE ID:

162821

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113588, Copper	Region 3
Carneros Creek (Monterey County)

LOE ID:

162052

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113588, Copper	Region 3
Carneros Creek (Monterey County)

LOE ID:

162054

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Copper criteria for the protection of human health from the consumption of water and organisms is 1.300 mg/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113588, Copper	Region 3
Carneros Creek (Monterey County)

LOE ID:

162102

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113588, Copper	Region 3
Carneros Creek (Monterey County)

LOE ID:

162837

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113588, Copper	Region 3
Carneros Creek (Monterey County)

LOE ID:

162103

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Copper criteria for the protection of human health from the consumption of water and organisms is 1.300 mg/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113588, Copper	Region 3
Carneros Creek (Monterey County)

LOE ID:

162635

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed SWAMP RWB3 CCAMP Salinas Rotation data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 3 of the 13 samples exceeded the water quality threshold for Copper. Although a total of 20 samples were collected, 7 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306CAR).

Temporal Representation:

Data for this waterbody was collected over the date range 2012-01-11 to 2018-12-11

Environmental Conditions:

QAPP Information:

SWAMP 2008, SWAMP 2017

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 113588, Copper	Region 3
Carneros Creek (Monterey County)

LOE ID:

162494

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306CAR).

Temporal Representation:

Data for this waterbody was collected over the date range 2012-01-11 to 2018-12-11

Environmental Conditions:

QAPP Information:

SWAMP 2008, SWAMP 2017

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 113588, Copper	Region 3
Carneros Creek (Monterey County)

LOE ID:

162724

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Copper criteria for the protection of human health from the consumption of water and organisms is 1.300 mg/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113588, Copper	Region 3
Carneros Creek (Monterey County)

LOE ID:

163065

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113588, Copper	Region 3
Carneros Creek (Monterey County)

LOE ID:

162104

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113588, Copper	Region 3
Carneros Creek (Monterey County)

LOE ID:

162615

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113588, Copper	Region 3
Carneros Creek (Monterey County)

LOE ID:

162366

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Copper criteria for the protection of human health from the consumption of water and organisms is 1.300 mg/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306CAR)

Temporal Representation:

The samples were collected between the dates of 2012-01-11 and 2018-12-11

Environmental Conditions:

QAPP Information:

SWAMP 2008, SWAMP 2017

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 113588, Copper	Region 3
Carneros Creek (Monterey County)

LOE ID:

162079

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Copper criteria for the protection of human health from the consumption of water and organisms is 1.300 mg/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113588, Copper	Region 3
Carneros Creek (Monterey County)

LOE ID:

163067

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113588, Copper	Region 3
Carneros Creek (Monterey County)

LOE ID:

162296

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Copper criteria for the protection of human health from the consumption of water and organisms is 1.300 mg/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113588, Copper	Region 3
Carneros Creek (Monterey County)

LOE ID:

162203

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Copper criteria for the protection of human health from the consumption of water and organisms is 1.300 mg/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113588, Copper	Region 3
Carneros Creek (Monterey County)

LOE ID:

162173

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Copper criteria for the protection of human health from the consumption of water and organisms is 1.300 mg/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan


DECISION ID	130097	Region 3
Carneros Creek (Monterey County)

Pollutant:	DDE (Dichlorodiphenyldichloroethylene)
Final Listing Decision:	List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Sources:	No Source Analysis Available
Expected TMDL Completion Date:	2035
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Eight lines of evidence are available in the administrative record to assess this pollutant. Eight LOEs summarize water samples. Three of three water samples exceed the DDE evaluation guideline (California Toxics Rule, 2000), set to protect for the municipal beneficial uses. Three of three water sample exceeds the DDE evaluation guideline (California Toxics Rule, 2000), set to protect for the commercial or recreational collection of fish, shellfish, or other organisms, beneficial uses. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for placing this water segment-pollutant combination on the section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Three of three water samples exceed the evaluation guidelines, and this exceeds the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:

Line of Evidence (LOE) for Decision ID 130097, DDE (Dichlorodiphenyldichloroethylene)	Region 3
Carneros Creek (Monterey County)

LOE ID:

163656

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 1 of the 1 samples exceeded the water quality threshold for DDE(p,p'). Although a total of 3 samples were collected, 2 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDE criteria for the protection of human health from the consumption of water and organisms is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 130097, DDE (Dichlorodiphenyldichloroethylene)	Region 3
Carneros Creek (Monterey County)

LOE ID:

163717

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 1 of the 1 samples exceeded the water quality threshold for DDE(p,p'). Although a total of 3 samples were collected, 2 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption of 4,4'-DDE is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 130097, DDE (Dichlorodiphenyldichloroethylene)	Region 3
Carneros Creek (Monterey County)

LOE ID:

163675

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 1 of the 1 samples exceeded the water quality threshold for DDE(p,p'). Although a total of 3 samples were collected, 2 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDE criteria for the protection of human health from the consumption of water and organisms is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 130097, DDE (Dichlorodiphenyldichloroethylene)	Region 3
Carneros Creek (Monterey County)

LOE ID:

163699

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDE(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption of 4,4'-DDE is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 130097, DDE (Dichlorodiphenyldichloroethylene)	Region 3
Carneros Creek (Monterey County)

LOE ID:

163672

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 1 of the 1 samples exceeded the water quality threshold for DDE(p,p'). Although a total of 3 samples were collected, 2 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDE criteria for the protection of human health from the consumption of water and organisms is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 130097, DDE (Dichlorodiphenyldichloroethylene)	Region 3
Carneros Creek (Monterey County)

LOE ID:

163676

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDE(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDE criteria for the protection of human health from the consumption of water and organisms is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32).

Temporal Representation:

Date for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 130097, DDE (Dichlorodiphenyldichloroethylene)	Region 3
Carneros Creek (Monterey County)

LOE ID:

163673

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 1 of the 1 samples exceeded the water quality threshold for DDE(p,p'). Although a total of 3 samples were collected, 2 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption of 4,4'-DDE is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 130097, DDE (Dichlorodiphenyldichloroethylene)	Region 3
Carneros Creek (Monterey County)

LOE ID:

163697

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Elkhorn_Carneros Creek Project data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 1 of the 1 samples exceeded the water quality threshold for DDE(p,p'). Although a total of 3 samples were collected, 2 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Human health risk associated with organism consumption of 4,4'-DDE is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A).

Temporal Representation:

Data for this waterbody was collected over the date range 2011-02-24 to 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan


DECISION ID	125745	Region 3
Carneros Creek (Monterey County)

Pollutant:	Escherichia coli (E. coli)
Final Listing Decision:	List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Sources:	No Source Analysis Available
Expected TMDL Completion Date:	2035
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	The State Water Boards Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California (the ISWEBE Plan) contains two bacteria water quality objectives applicable to the REC-1 beneficial use, which were adopted on August 7, 2018. Because the salinity level of this waterbody is equal to or less than 1 part per thousand 95 percent or more of the time, the E. coli bacteria objective applies. Therefore, this waterbody is being considered for placement on the CWA section 303(d) List under section 3.3 of the Listing Policy, as applicable, using the E. coli objective. In accordance with section 6.1.5.3 of the Listing Policy, data should be representative of the critical timing that the pollutant is expected to impact the waterbody. E. coli populations may fluctuate substantially on a daily, seasonal, or yearly basis. Lacking constant inputs, indicator bacteria do not persist in the environment for a long period and effects are of relatively short duration. As a result, the historic levels of E. coli in the waterbody may be a poor indicator of current risks to human health, particularly when more recent data are available to sufficiently assess the water quality standard. Additionally, water quality conditions in waterbodies may change as a result of management actions that have been implemented to address E. coli. Unrepresentative data may result in incorrectly placing or not placing a water body segment on the CWA section 303(d) List, which could result in the unnecessary expenditure of public resources or missing a human health problem. Historic lines of evidence for data collected prior to 2010 were evaluated pursuant to these considerations and were not used to assess water quality standards attainment because they do not meet the temporal representation requirements of section 6.1.5.3 of the Listing Policy. All samples are evaluated using the statistical threshold value (STV) water quality objective for water contact recreation (ISWEBE, SWRCB 2019). The water quality objective states that the STV shall not be exceeded by more than 10 percent of the samples collected in a calendar month. Where there are more than one samples collected within any six-week period, a geomean of those samples is calculated and evaluated using the geomean water quality objective for water contact recreation (ISWEBE, SWRCB 2019). Although 13 lines of evidence are available in the administrative record to assess this pollutant, this decision is based upon evaluation of the E. coli data collected since 2010 which are most representative of existing conditions in the waterbody. A total of 34 of the 65 samples collected since 2010 exceed the STV water quality objective (see LOEs 150402, 149787, 149778, 149738, 149779, 149843, 149777, 148256, and 149780) and this exceeds the allowable frequency listed in Table 3.2 of the Listing Policy. Note zero of the two geomeans exceed the geomean water quality objective (see LOE 148255) and this sample count is insufficient to make a beneficial use support determination. The data were collected between 2010 and 2018 and represent a range of hydrologic conditions (both wet and dry years). This sample count of data collected since 2010 is adequate to determine beneficial use support in accordance with the Listing Policy. Note, three lines of evidence summarizing historic data (data collected prior to 2010) compared to the USEPAs Ambient Water Quality Criteria for Bacteria (USEPA, 1986). Four of the 12 historic samples exceed the USEPA criteria set to protect for water contact recreation (see LOEs 26704, 26663, and 49741). These data are not used for making this decision nor are they used in the final beneficial use determination. After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the CWA section 303(d) List because applicable water quality standards are exceeded and a pollutant contributes to the problem. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Thirty-four out of the 65 samples exceed the STV water quality objective (ISWEBE, SWRCB 2019) for water contact recreation and this exceeds the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

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

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

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 125745, Escherichia coli (E. coli)	Region 3
Carneros Creek (Monterey County)

LOE ID:

149778

Pollutant:

Escherichia coli (E. coli)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 6 of the 12 samples exceeded the Statistical Threshold Value (STV) water quality threshold for E. coli. The STV is based on a 10% exceedance rate that is calculated monthly.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The bacteria water quality objective applicable to all non-saline waters, is a Statistical Threshold Value (STV) of 320 cfu/100 mL. The applicable STV shall not be exceeded by more than 10 percent of the samples collected in a calendar month, calculated in a static manner (ISWEBE 2018).

Objective/Criterion Reference:

Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site(s), station(s): 306-CARNE-36

Temporal Representation:

The samples were collected between the days of 2010-12-22 and 2015-02-11 .

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 125745, Escherichia coli (E. coli)	Region 3
Carneros Creek (Monterey County)

LOE ID:

149787

Pollutant:

Escherichia coli (E. coli)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 2 of the 2 samples exceeded the Statistical Threshold Value (STV) water quality threshold for E. coli. The STV is based on a 10% exceedance rate that is calculated monthly.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site(s), station(s): 306-CARNE-36

Temporal Representation:

The samples were collected between the days of 2011-05-07 and 2012-05-05 .

Environmental Conditions:

QAPP Information:

Monterey Bay NMS. 2003. California Coast Wide Snapshot Day 2003 Quality Assurance Project Plan (QAPP).

QAPP Information Reference(s):

California Coast Wide Snapshot Day 2003 Quality Assurance Project Plan (QAPP)

Line of Evidence (LOE) for Decision ID 125745, Escherichia coli (E. coli)	Region 3
Carneros Creek (Monterey County)

LOE ID:

49741

Pollutant:

Escherichia coli (E. coli)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Data Reference:

Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

USEPA Ambient Water Quality Criteria for Bacteria -1986.

Objective/Criterion Reference:

Evaluation Guideline:

Single sample maximum allowable density for E. coli in freshwater is 235 MPN/100mL (as stated in Table 4, page 15 of the USEPA Ambient Water Quality Criteria for Bacteria -1986).

Guideline Reference:

Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002

Spatial Representation:

Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]

Temporal Representation:

Data was collected over the time period 1/16/2007-2/20/2007.

Environmental Conditions:

Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate.

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 125745, Escherichia coli (E. coli)	Region 3
Carneros Creek (Monterey County)

LOE ID:

26704

Pollutant:

Escherichia coli (E. coli)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Data Reference:

Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

USEPA Ambient Water Quality Criteria for Bacteria -1986.

Objective/Criterion Reference:

Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002

Evaluation Guideline:

Single sample maximum allowable density for E. coli in freshwater is 235 MPN/100mL (as stated in Table 4, page 15)

Guideline Reference:

Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002

Spatial Representation:

Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306-CARNE-1 - Carneros Creek]

Temporal Representation:

Data was collected on a single day 5/1/2004. Coastal Watershed Council Snapshot Day Monitoring is conducted annually.

Environmental Conditions:

Staff is not aware of any special conditions that might effect interpretation of the data.

QAPP Information:

State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 125745, Escherichia coli (E. coli)	Region 3
Carneros Creek (Monterey County)

LOE ID:

26663

Pollutant:

Escherichia coli (E. coli)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Central Coast Regional Board Staff assessed CCAMP Salinas (Salinas) data for Carneros Creek to determine beneficial use support and results are as follows: 4 of 9 samples exceed the criterion for Escherichia coli.

Data Reference:

Final Data File used for assessment: CCAMP Salinas Toxicity data

Final Data File used for assessment: CCAMP Water Quality Data_file1

Final Data File used for assessment: CCAMP Water Quality Data_file2

Final Data File used for assessment: CCAMP Water Quality Data_file3

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

USEPA Ambient Water Quality Criteria for Bacteria -1986.

Objective/Criterion Reference:

Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002

Evaluation Guideline:

Single sample maximum allowable density for E. coli in freshwater is 235 MPN/100mL (as stated in Table 4, page 15)

Guideline Reference:

Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002

Spatial Representation:

Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]

Temporal Representation:

Environmental Conditions:

Staff is not aware of any special conditions that might effect interpretation of the data.

QAPP Information:

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 125745, Escherichia coli (E. coli)	Region 3
Carneros Creek (Monterey County)

LOE ID:

149777

Pollutant:

Escherichia coli (E. coli)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 6 of the 11 samples exceeded the Statistical Threshold Value (STV) water quality threshold for E. coli. The STV is based on a 10% exceedance rate that is calculated monthly.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site(s), station(s): 306-CARNE-33A

Temporal Representation:

The samples were collected between the days of 2011-01-28 and 2015-02-11 .

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 125745, Escherichia coli (E. coli)	Region 3
Carneros Creek (Monterey County)

LOE ID:

149780

Pollutant:

Escherichia coli (E. coli)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 7 of the 12 samples exceeded the Statistical Threshold Value (STV) water quality threshold for E. coli. The STV is based on a 10% exceedance rate that is calculated monthly.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site(s), station(s): 306-CARNE-31

Temporal Representation:

The samples were collected between the days of 2010-12-22 and 2015-02-11 .

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 125745, Escherichia coli (E. coli)	Region 3
Carneros Creek (Monterey County)

LOE ID:

148256

Pollutant:

Escherichia coli (E. coli)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Central Coast Water Board Staff assessed public submissions data for Carneros Creek in Los Lomas to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Escherichia coli.

Data Reference:

SWAMP FIB data: 1/4/2018--4/16/2018.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Carneros Creek in Los Lomas was collected at 1 monitoring site [306CAR]

Temporal Representation:

Data was collected on 2 sampling date(s): 04/19/2018 and 01/11/2018. CCAMP data is collected monthly and other samples associated with this project are included in another LOE for this site

Environmental Conditions:

QAPP Information:

All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAPrP. QA data are included in submission. All data are flagged as appropriate.

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 125745, Escherichia coli (E. coli)	Region 3
Carneros Creek (Monterey County)

LOE ID:

150402

Pollutant:

Escherichia coli (E. coli)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 6 of the 16 samples exceeded the Statistical Threshold Value (STV) water quality threshold for E. coli. The STV is based on a 10% exceedance rate that is calculated monthly.

Data Reference:

Field, Habitat, Sediment, Tissue, Toxicity, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site(s), station(s): 306CAR

Temporal Representation:

The samples were collected between the days of 2012-01-11 and 2018-12-11 .

Environmental Conditions:

QAPP Information:

SWAMP 2008, SWAMP 2017

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 125745, Escherichia coli (E. coli)	Region 3
Carneros Creek (Monterey County)

LOE ID:

149843

Pollutant:

Escherichia coli (E. coli)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 1 of the 1 samples exceeded the Statistical Threshold Value (STV) water quality threshold for E. coli. The STV is based on a 10% exceedance rate that is calculated monthly.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site(s), station(s): 306-CARNE-31

Temporal Representation:

The samples were collected between the days of 2011-05-07 and 2011-05-07 .

Environmental Conditions:

QAPP Information:

Monterey Bay NMS. 2003. California Coast Wide Snapshot Day 2003 Quality Assurance Project Plan (QAPP).

QAPP Information Reference(s):

California Coast Wide Snapshot Day 2003 Quality Assurance Project Plan (QAPP)

Line of Evidence (LOE) for Decision ID 125745, Escherichia coli (E. coli)	Region 3
Carneros Creek (Monterey County)

LOE ID:

148255

Pollutant:

Escherichia coli (E. coli)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

SWAMP FIB data: 1/4/2018--4/16/2018.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The bacteria water quality objective applicable to all non-saline waters, is a geometric mean (GM) of E. coli not to exceed 100 cfu/100 mL. The waterbody GM shall not be greater than the applicable GM magnitude in any six-week interval, calculated weekly (ISWEBE 2018).

Objective/Criterion Reference:

Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Carneros Creek in Los Lomas was collected at 1 monitoring site [306CAR]

Temporal Representation:

Data was collected on 2 sampling date(s): 04/19/2018 and 01/11/2018. CCAMP data is collected monthly and other samples associated with this project are included in another LOE for this site

Environmental Conditions:

QAPP Information:

All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAPrP. QA data are included in submission. All data are flagged as appropriate.

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 125745, Escherichia coli (E. coli)	Region 3
Carneros Creek (Monterey County)

LOE ID:

149779

Pollutant:

Escherichia coli (E. coli)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 6 of the 8 samples exceeded the Statistical Threshold Value (STV) water quality threshold for E. coli. The STV is based on a 10% exceedance rate that is calculated monthly.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site(s), station(s): 306-CARNE-32

Temporal Representation:

The samples were collected between the days of 2010-12-22 and 2015-02-11 .

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 125745, Escherichia coli (E. coli)	Region 3
Carneros Creek (Monterey County)

LOE ID:

149738

Pollutant:

Escherichia coli (E. coli)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed data for Carneros Creek (Monterey County) to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the Statistical Threshold Value (STV) water quality threshold for E. coli. The STV is based on a 10% exceedance rate that is calculated monthly.

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site(s), station(s): 306-CARNE-32

Temporal Representation:

The samples were collected between the days of 2011-05-07 and 2011-05-07 .

Environmental Conditions:

QAPP Information:

Monterey Bay NMS. 2003. California Coast Wide Snapshot Day 2003 Quality Assurance Project Plan (QAPP).

QAPP Information Reference(s):

California Coast Wide Snapshot Day 2003 Quality Assurance Project Plan (QAPP)


DECISION ID	113604	Region 3
Carneros Creek (Monterey County)

Pollutant:	Organophosphate Pesticides
Final Listing Decision:	List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Sources:	No Source Analysis Available
Expected TMDL Completion Date:	2035
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Ten lines of evidence are available in the administrative record to assess this pollutant. For lines of evidence where the fraction is “not recorded” staff assumed that the fraction is “total” and the sample and exceedance counts are summed for the purpose of making this decision. Five of 13 water samples exceeded the aquatic life evaluation guideline for additive effects of chlorpyrifos and diazinon (Bailey et al., 1997). Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for placing this water segment-pollutant combination on the section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Five of 13 water samples exceeded the evaluation guideline and this exceeds the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

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

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:

Line of Evidence (LOE) for Decision ID 113604, Organophosphate Pesticides	Region 3
Carneros Creek (Monterey County)

LOE ID:

173694

Pollutant:

Organophosphate Pesticides

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The evaluation guideline for the protection of aquatic life from the additive effects of the organophophate pesticides chlorpyrifos and diazinon is one toxic unit equivalent. A toxic unit equivalent is equal to the sum of chlorpyrifos and diazinon from a single sample, each having their reported concentration divided their respective evaluation guideline prior to being summed. If this results in a value greater than one, the sample is considered to be in exceedance of the water quality standard. (Bailey et al., 1997).

Guideline Reference:

Joint acute toxicity of Diazinon and Chlorpyrifos to Ceriodaphnia dubia.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113604, Organophosphate Pesticides	Region 3
Carneros Creek (Monterey County)

LOE ID:

173417

Pollutant:

Organophosphate Pesticides

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Joint acute toxicity of Diazinon and Chlorpyrifos to Ceriodaphnia dubia.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113604, Organophosphate Pesticides	Region 3
Carneros Creek (Monterey County)

LOE ID:

173274

Pollutant:

Organophosphate Pesticides

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Joint acute toxicity of Diazinon and Chlorpyrifos to Ceriodaphnia dubia.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 113604, Organophosphate Pesticides	Region 3
Carneros Creek (Monterey County)

LOE ID:

173249

Pollutant:

Organophosphate Pesticides

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Joint acute toxicity of Diazinon and Chlorpyrifos to Ceriodaphnia dubia.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113604, Organophosphate Pesticides	Region 3
Carneros Creek (Monterey County)

LOE ID:

173846

Pollutant:

Organophosphate Pesticides

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Joint acute toxicity of Diazinon and Chlorpyrifos to Ceriodaphnia dubia.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-33A)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113604, Organophosphate Pesticides	Region 3
Carneros Creek (Monterey County)

LOE ID:

173416

Pollutant:

Organophosphate Pesticides

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Joint acute toxicity of Diazinon and Chlorpyrifos to Ceriodaphnia dubia.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113604, Organophosphate Pesticides	Region 3
Carneros Creek (Monterey County)

LOE ID:

173803

Pollutant:

Organophosphate Pesticides

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Joint acute toxicity of Diazinon and Chlorpyrifos to Ceriodaphnia dubia.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-31)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113604, Organophosphate Pesticides	Region 3
Carneros Creek (Monterey County)

LOE ID:

173648

Pollutant:

Organophosphate Pesticides

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Joint acute toxicity of Diazinon and Chlorpyrifos to Ceriodaphnia dubia.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113604, Organophosphate Pesticides	Region 3
Carneros Creek (Monterey County)

LOE ID:

173594

Pollutant:

Organophosphate Pesticides

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Joint acute toxicity of Diazinon and Chlorpyrifos to Ceriodaphnia dubia.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-32)

Temporal Representation:

The samples were collected between the dates of 2011-02-24 and 2015-02-11

Environmental Conditions:

QAPP Information:

Coastal Watershed Council. 2010. Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan.

QAPP Information Reference(s):

Transforming Inflows to the Elkhorn Slough Estuary: Lower Carneros Creek Wetland Restoration and Adaptive Management Quality Assurance Project Plan

Line of Evidence (LOE) for Decision ID 113604, Organophosphate Pesticides	Region 3
Carneros Creek (Monterey County)

LOE ID:

173826

Pollutant:

Organophosphate Pesticides

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Water data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses (Water Quality Control Plan, Central Coast Basin).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Joint acute toxicity of Diazinon and Chlorpyrifos to Ceriodaphnia dubia.

Spatial Representation:

The samples were collected at 1 monitoring site (306-CARNE-36)

Temporal Representation:

The samples were collected between the dates of 2011-04-26 and 2011-04-26

Environmental Conditions:

QAPP Information:

Data is exempt from QAPP requirement

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.


DECISION ID	113586	Region 3
Carneros Creek (Monterey County)

Pollutant:	Chlorophyll-a
Final Listing Decision:	Do Not Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not Delist from 303(d) list (TMDL required list)(2018)
Revision Status	Original
Sources:	No Source Analysis Available
Expected TMDL Completion Date:	2018
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	No new data were assessed for the 2020 listing cycle. This pollutant is being considered for removal from the CWA section 303(d) List under section 4.2 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status. Five lines of evidence are available in the administrative record to assess this pollutant. Twenty-five of the 62 samples exceed the evaluation guideline. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Twenty-five of the 62 samples exceed the evaluation guideline and this exceeds the allowable frequency listed in Table 4.2 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met.

Regional Board Decision Recommendation:	This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current cycle. The decision has not changed.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 113586, Chlorophyll-a	Region 3
Carneros Creek (Monterey County)

LOE ID:

49727

Pollutant:

Chlorophyll-a

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

North Carolina Administrative code (NCAC), Title 15A - Environmental and Natural Resources, Subchapter 2B-Surface water and wetland standards, Rule 0211-Fresh surface water quality standards for class C waters (Class C is defined as freshwaters protected for secondary recreation, fishing, aquatic life including propagation and survival, and wildlife). Section 3(a) of Rule 0211 applies to all fresh surface waters and states that chlorophyll a is not to exceed 40 ug/L.

Guideline Reference:

North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards

Guideline Reference:

North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CAR-Carneros Creek in Los Lomas at Blohm Road]

Temporal Representation:

Data was collected over the time period 1/16/2007-2/20/2007.

Environmental Conditions:

Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate.

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 113586, Chlorophyll-a	Region 3
Carneros Creek (Monterey County)

LOE ID:

52923

Pollutant:

Chlorophyll-a

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Central Coast Water Board Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 2 of 5 samples exceed the criterion for Chlorophyll a.

Data Reference:

Data from Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program, Jan. 2007-Jul. 2009

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards

Guideline Reference:

North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards

Guideline Reference:

Quality Assurance Project Plan, Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program. May 15, 2009, Ver.1.3

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:

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113586, Chlorophyll-a	Region 3
Carneros Creek (Monterey County)

LOE ID:

52815

Pollutant:

Chlorophyll-a

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Central Coast Water Board Central Coast Water Board Staff assessed public submissions data for Carneros Creek (Monterey County) to determine beneficial use support and results are as follows: 1 of 11 samples exceed the criterion for Chlorophyll a (lab).

Data Reference:

Data from Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program, Jan. 2007-Jul. 2009

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards

Guideline Reference:

North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards

Guideline Reference:

Quality Assurance Project Plan, Elkhorn Slough National Estuarine Research Reserve Volunteer Monthly Water Quality Program. May 15, 2009, Ver.1.3

Spatial Representation:

Data for this line of evidence for Carneros Creek (Monterey County) was collected at 1 monitoring site [ 306CARBLR-Carneros Creek in Los Lomas at Blohm Road]

Temporal Representation:

Data was collected over the time period 6/3/2008-7/7/2009.

Environmental Conditions:

Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113586, Chlorophyll-a	Region 3
Carneros Creek (Monterey County)

LOE ID:

26687

Pollutant:

Chlorophyll-a

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Central Coast Regional Board Staff assessed National Estuarine Research Reserve Monitoring Program (R3_ESNERR) data for Carneros Creek to determine beneficial use support and results are as follows: 9 of 21 samples exceed the criterion for Chlorophyll a.

Data Reference:

Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Field Data from 2006

Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Water Quality Data from 2006

Final Data File used for assessment: ESNERR (Elkhorn Slough National Reserve) Water Quality Data from 94-04

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)

Objective/Criterion Reference:

North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards

Objective/Criterion Reference:

North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards

Evaluation Guideline:

Guideline Reference:

Guideline Reference:

North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards

Spatial Representation:

Data for this line of evidence for Carneros Creek was collected at 1 monitoring site [ 306CARBLR - Carneros Creek]

Temporal Representation:

Data was collected over the time period 7/31/2001-5/5/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might effect interpretation of the data.

QAPP Information:

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113586, Chlorophyll-a	Region 3
Carneros Creek (Monterey County)

LOE ID:

26651

Pollutant:

Chlorophyll-a

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Central Coast Regional Board Staff assessed CCAMP Salinas (Salinas) data for Carneros Creek to determine beneficial use support and results are as follows: 13 of 23 samples exceed the criterion for Chlorophyll a.

Data Reference:

Final Data File used for assessment: CCAMP Salinas Toxicity data

Final Data File used for assessment: CCAMP Water Quality Data_file1

Final Data File used for assessment: CCAMP Water Quality Data_file2

Final Data File used for assessment: CCAMP Water Quality Data_file3

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3)

Objective/Criterion Reference:

North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards

Objective/Criterion Reference:

North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards

Evaluation Guideline:

Guideline Reference:

Guideline Reference:

North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards

Guideline Reference: