Water Body Name: | Reed Creek, unnamed tributary (Tuolumne County) |
Water Body ID: | CAR5364003020110217151233 |
Water Body Type: | River & Stream |
DECISION ID |
85476 |
Region 5 |
Reed Creek, unnamed tributary (Tuolumne County) |
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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 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. Two of 32 samples exceed the Escherichia coli (E. coli) evaluation guideline and zero of 33 samples exceed the fecal coliform water quality objective. 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. Two of 32 samples exceed the Escherichia coli (E. coli) evaluation guideline and zero of 33 samples exceed the fecal coliform water quality objective, 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. |
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LOE ID: | 69301 | ||||
Pollutant: | Escherichia coli (E. coli) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 18 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | Two of the 18 samples exceeded the E. coli 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: | 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 maximum allowable density for E. coli in freshwater is 235 MPN/100mL. USEPA Ambient Water Quality Criteria for Bacteria -1986. | ||||
Guideline Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 | ||||
Spatial Representation: | Samples were collected from a tributary stream of Reed Creek, where it flows through Lower Wolfin Meadow. CAR5364003020110217151233 | ||||
Temporal Representation: | Samples were collected from May 2010 to August 2010. | ||||
Environmental Conditions: | Half of the samples were collected when livestock were not present (May, June) and half were collected when livestock were present (July, August) | ||||
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. | ||||
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LOE ID: | 69300 | ||||
Pollutant: | Escherichia coli (E. coli) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 14 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | Zero of the 14 samples exceeded the E. coli 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: | 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 geometric mean for E. coli in freshwater is 126 MPN/100mL. USEPA Ambient Water Quality Criteria for Bacteria -1986. | ||||
Guideline Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 | ||||
Spatial Representation: | Samples were collected from a tributary stream of Reed Creek, where it flows through Lower Wolfin Meadow. CAR5364003020110217151233 | ||||
Temporal Representation: | Samples were collected from May 2010 to August 2010. | ||||
Environmental Conditions: | Half of the samples were collected when livestock were not present (May, June) and half were collected when livestock were present (July, August). | ||||
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. | ||||
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LOE ID: | 69302 | ||||
Pollutant: | Fecal Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 15 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | Zero of the 15 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 a tributary stream of Reed Creek, where it flows through Lower Wolfin Meadow. CAR5364003020110217151233 | ||||
Temporal Representation: | Samples were collected from May 2010 to August 2010. | ||||
Environmental Conditions: | Half of the samples were collected when livestock were not present (May, June) and half were collected when livestock were present (July, August) | ||||
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. | ||||
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LOE ID: | 69290 | ||||
Pollutant: | Fecal Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 18 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | Zero of the 18 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. | ||||
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 a tributary stream of Reed Creek, where it flows through Lower Wolfin Meadow. CAR5364003020110217151233 | ||||
Temporal Representation: | Samples were collected from May 2010 to August 2010. | ||||
Environmental Conditions: | Half of the samples were collected when livestock were not present (May, June) and half were collected when livestock were present (July, August) | ||||
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. | ||||