Final California 2018 Integrated Report (303(d) List/305(b) Report)

Supporting Information

Regional Board 5 - Central Valley Region

Water Body Name:	Herring Creek, unnamed tributary (Tuolumne County)
Water Body ID:	CAR5343001220101028160300
Water Body Type:	River & Stream


DECISION ID	92363	Region 5
Herring Creek, unnamed tributary (Tuolumne County)

Pollutant:	Indicator Bacteria
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the 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. Four lines of evidence are available in the administrative record to assess this pollutant. One of 14 samples exceed the evaluation guideline for Escherichia coli (E. coli) and zero of 11 calculated geometric means exceed the evaluation guideline for E. coli. One of 14 samples exceed the evaluation guideline for fecal coliform and zero of 11 calculated geometric means exceed the evaluation guideline for fecal coliform. 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. 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 14 samples exceed the evaluation guideline for Escherichia coli (E. coli) and zero of 11 calculated geometric means exceed the evaluation guideline for E. coli. One of 14 samples exceed the evaluation guideline for fecal coliform and zero of 11 calculated geometric means exceed the evaluation guideline for fecal coliform. 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 26 samples is needed to determine if a beneficial use is fully supported using table 3.2. 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 this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 92363, Indicator Bacteria	Region 5
Herring Creek, unnamed tributary (Tuolumne County)

LOE ID:

64582

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

One of the 14 samples exceeded the fecal coliform objective.

Data Reference:

Bacteria Contamination, Violations, and Field Data for Stanislaus, 2009-2010.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The fecal coliform concentration shall not exceed 400/100 ml. (Water Quality Control Plan for Central Valley Water Quality Control Plan, Sacramento River and San Joaquin River Basins.)

Objective/Criterion Reference:

Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at Upper Fiddlers Green. WBID: CAR5343001220101028160300

Temporal Representation:

Samples were collected between 6/11/2009 and 8/13/2009.

Environmental Conditions:

Half of the samples were collected before livestock were in the area and the other half was collected after.

QAPP Information:

This data was collected under the Surface Water Ambient Monitoring Project in the Stanislaus National Forest Quality Assurance Project Plan.

QAPP Information Reference(s):

Quality Assurance Project Plan for Stanislaus National Forest by Central Sierra Environmental Resource Center.

Line of Evidence (LOE) for Decision ID 92363, Indicator Bacteria	Region 5
Herring Creek, unnamed tributary (Tuolumne County)

LOE ID:

64580

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:

Not Specified

Data Used to Assess Water Quality:

One of the 14 water samples exceeded the E. coli evaluation guideline.

Data Reference:

Bacteria Contamination, Violations, and Field Data for Stanislaus, 2009-2010.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Waters shall not contain chemical constituents in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins)

Objective/Criterion Reference:

Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed

Evaluation Guideline:

The E. coli concentration shall not exceed 235/100 ml. (USEPA. 1986. Ambient Water Quality Criteria for Bacteria)

Guideline Reference:

Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002

Spatial Representation:

The samples were collected at Upper Fiddlers Green. WBID: CAR5343001220101028160300

Temporal Representation:

Samples were collected between 6/11/2009 and 8/13/2009.

Environmental Conditions:

Half of the samples were collected before livestock were in the area and the other half was collected after.

QAPP Information:

This data was collected under the Surface Water Ambient Monitoring Project in the Stanislaus National Forest Quality Assurance Project Plan.

QAPP Information Reference(s):

Quality Assurance Project Plan for Stanislaus National Forest by Central Sierra Environmental Resource Center.

Line of Evidence (LOE) for Decision ID 92363, Indicator Bacteria	Region 5
Herring Creek, unnamed tributary (Tuolumne County)

LOE ID:

64581

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

Zero of the 11 calculated geomeans exceeded the fecal coliform objective.

Data Reference:

Bacteria Contamination, Violations, and Field Data for Stanislaus, 2009-2010.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Geometric mean: The fecal coliform concentration shall not exceed 200/100 ml. (Water Quality Control Plan for Central Valley Water Quality Control Plan, Sacramento River and San Joaquin River Basins.)

Objective/Criterion Reference:

Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at Upper Fiddlers Green WBID: CAR5343001220101028160300

Temporal Representation:

Samples were collected between 6/11/2009 and 8/13/2009.

Environmental Conditions:

Half of the samples were collected before livestock were in the area and the other half was collected after.

QAPP Information:

This data was collected under the Surface Water Ambient Monitoring Project in the Stanislaus National Forest Quality Assurance Project Plan

QAPP Information Reference(s):

Quality Assurance Project Plan for Stanislaus National Forest by Central Sierra Environmental Resource Center.

Line of Evidence (LOE) for Decision ID 92363, Indicator Bacteria	Region 5
Herring Creek, unnamed tributary (Tuolumne County)

LOE ID:

64565

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:

Not Specified

Data Used to Assess Water Quality:

Zero of the 11 calculated geomeans exceeded the E. coli evaluation guideline.

Data Reference:

Bacteria Contamination, Violations, and Field Data for Stanislaus, 2009-2010.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed

Evaluation Guideline:

The geometric mean for E. coli shall not exceed 126/100 ml. (USEPA. 1986. Ambient Water Quality Criteria for Bacteria)

Guideline Reference:

Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002

Spatial Representation:

The samples were collected at Upper Fiddlers Green WBID: CAR5343001220101028160300

Temporal Representation:

Samples were collected between 6/11/2009 and 8/13/2009.

Environmental Conditions:

Half of the samples were collected before livestock were in the area and the other half was collected after.

QAPP Information:

This data was collected under the Surface Water Ambient Monitoring Project in the Stanislaus National Forest Quality Assurance Project Plan

QAPP Information Reference(s):

Quality Assurance Project Plan for Stanislaus National Forest by Central Sierra Environmental Resource Center.