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

Supporting Information

Regional Board 5 - Central Valley Region

Water Body Name:	Rose Creek (Tuolumne County)
Water Body ID:	CAR5342201020101020155327
Water Body Type:	River & Stream


DECISION ID	85477	Region 5
Rose Creek (Tuolumne County)

Pollutant:	Indicator Bacteria
Final Listing Decision:	List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	List on 303(d) list (TMDL required list)(2016)
Revision Status	Original
Sources:	A Source Unknown
Expected TMDL Completion Date:	2027
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 3.2 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. Eight of 23 samples exceed the evaluation guideline for Escherichia coli (E. coli) Seven of 23 samples exceed the water quality objective for fecal coliform and Seven of 17 calculated geometric means exceed the water quality objective for fecal coliform. Eight of 17 calculated geometric means exceed the water quality objective for E.coli. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of placing this water segment-pollutant combination on the 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. Eight of 23 samples exceed the evaluation guideline for Escherichia coli (E. coli) Seven of 23 samples exceed the water quality objective for fecal coliform. Seven of 17 calculated geometric means exceed the water quality objective for fecal coliform. Eight of 17 calculated geometric means exceed the water quality objective for E.coli. 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:

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 85477, Indicator Bacteria	Region 5
Rose Creek (Tuolumne County)

LOE ID:

69423

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:

Seven of the 23 samples exceeded the fecal coliform objective.

Data Reference:

Data for Fecal Col, E.coli, and Observations in Region 5 for Various Water Bodies, 2010.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

In waters designated for contact recreation (REC-1), the fecal coliform concentration shall not exceed 400/100ml more than 10 percent of the time in any 30 day period.

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:

Samples were collected from Rose Creek. CAR5342201020101020155327

Temporal Representation:

Samples were collected from August 27, 2009, September 23, 2009, and May to August 2010.

Environmental Conditions:

The majority of these samples were collected when livestock were present.

QAPP Information:

Samples were 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.

Line of Evidence (LOE) for Decision ID 85477, Indicator Bacteria	Region 5
Rose Creek (Tuolumne County)

LOE ID:

69422

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:

Seven of the 17 samples exceeded the fecal coliform geomean objective.

Data Reference:

Data for Fecal Col, E.coli, and Observations in Region 5 for Various Water Bodies, 2010.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Geometric mean: In waters designated for contact recreation (REC-1), the fecal coliform concentration shall not exceed 200/100ml.

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:

Samples were collected from Rose Creek.

Temporal Representation:

Samples were collected from August 27, 2009, September 23, 2009, and May to August 2010.

Environmental Conditions:

The majority of these samples were collected when livestock were present.

QAPP Information:

Samples were 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.

Line of Evidence (LOE) for Decision ID 85477, Indicator Bacteria	Region 5
Rose Creek (Tuolumne County)

LOE ID:

96077

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:

Eight of 23 samples exceed the SSM guideline for E. coli.

Data Reference:

Data for Fecal Col, E.coli, and Observations in Region 5 for Various Water Bodies, 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:

Single sample maxima (SSM) of allowable density for E. coli in freshwater is 235 MPN/100mL.

Guideline Reference:

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

Spatial Representation:

Samples were collected from Rose Creek. CAR5342201020101020155327

Temporal Representation:

Samples were collected from August 27, 2009, September 23, 2009, and May to August 2010.

Environmental Conditions:

The majority of these samples were collected when livestock were present.

QAPP Information:

Samples were 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.

Line of Evidence (LOE) for Decision ID 85477, Indicator Bacteria	Region 5
Rose Creek (Tuolumne County)

LOE ID:

78397

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:

Ten of 17 geometric means of E. coli densities exceeded the 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 of E. coli densities should not exceed 100cfu/100 mL (USEPA 2012).

Guideline Reference:

2012 USEPA Recreational Water Quality Criteria - Bacteria

Spatial Representation:

Samples were collected from Rose Creek in an area accessed by Forest Service Road 3N59Y (which spurs off road 4N16). The elevation of this sample location is 3,756 ft.

Temporal Representation:

Samples were collected from August 27, 2009, September 23, 2009, and May to August 2010.

Environmental Conditions:

QAPP Information:

Samples were collected, processed, and analyzed in accordance with the methods described in ¿Surface Water Ambient Monitoring Project in the Santislaus National Forest - Quality Assurance Project Plan ¿ (Myers, 2010).

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 85477, Indicator Bacteria	Region 5
Rose Creek (Tuolumne County)

LOE ID:

95807

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:

Six of 23 samples exceed the STV guideline for E. coli.

Data Reference:

Data for Fecal Col, E.coli, and Observations in Region 5 for Various Water Bodies, 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:

Statistical Threshold Value (STV) of allowable density for E. coli in freshwater is 320 cfu/100mL.

Guideline Reference:

2012 USEPA Recreational Water Quality Criteria - Bacteria

Spatial Representation:

Samples were collected from Rose Creek. CAR5342201020101020155327

Temporal Representation:

Samples were collected from August 27, 2009, September 23, 2009, and May to August 2010.

Environmental Conditions:

The majority of these samples were collected when livestock were present.

QAPP Information:

Samples were 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.

Line of Evidence (LOE) for Decision ID 85477, Indicator Bacteria	Region 5
Rose Creek (Tuolumne County)

LOE ID:

96076

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:

Eight of 17 geometric means of E. coli densities exceeded the 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 of E. coli densities should not exceed 126 MPN/100 mL.

Guideline Reference:

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

Spatial Representation:

Samples were collected from Rose Creek in an area accessed by Forest Service Road 3N59Y (which spurs off road 4N16). The elevation of this sample location is 3,756 ft.

Temporal Representation:

Samples were collected from August 27, 2009, September 23, 2009, and May to August 2010.

Environmental Conditions:

QAPP Information:

QAPP Information Reference(s):

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