Water Body Name: | Mokelumne River, North Fork |
Water Body ID: | CAR5326001420041208150818 |
Water Body Type: | River & Stream |
Lines of Evidence (LOEs) for Decision ID 10182 |
LOE ID: | 6268 |
Pollutant: | Arsenic |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 2 |
Number of Exceedances: | 0 |
Data and Information Type: | Not Specified |
Data Used to Assess Water Quality: | 0 of the 2 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation objective for Arsenic. |
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CRWQCB, 2006) Dissolved Arsenic levels should not exceed 340 ug/L maximum concentration for 1-hour average (CTR) |
Objective/Criterion Reference: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Compilation of Water Quality Goals | |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Samples were collected at N.Fork Mokelumne River @ Hwy 26. Samples were collected at N.Fork Mokelumne River @ Hwy 27. |
Temporal Representation: | The samples were collected from Jun 13 2002 to Jun 26 2002 |
Environmental Conditions: | |
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. |
QAPP Information Reference(s): | |
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LOE ID: | 20553 |
Pollutant: | Arsenic |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 2 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | 0 of the 2 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation objective for Arsenic. |
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CRWQCB, 2006) |
Objective/Criterion Reference: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Evaluation Guideline: | Arsenic levels should not exceed 10 ug/L (USEPA Primary MCL) |
Guideline Reference: | Compilation of Water Quality Goals |
Spatial Representation: | Samples were collected at N.Fork Mokelumne River @ Hwy 26. |
Temporal Representation: | The samples were collected from Jun 13 2002 to Jun 26 2002 |
Environmental Conditions: | |
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 10183 |
LOE ID: | 20591 |
Pollutant: | Cadmium |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Total |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 2 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | 0 of the 2 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation objective for Cadmium. |
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CRWQCB, 2006) |
Objective/Criterion Reference: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Evaluation Guideline: | Cadmium levels should not exceed 5 ug/L (Department of Public Health Primary MCL) |
Guideline Reference: | Compilation of Water Quality Goals |
Spatial Representation: | Samples were collected at N.Fork Mokelumne River @ Hwy 26. |
Temporal Representation: | The samples were collected from Jun 13 2002 to Jun 26 2002 |
Environmental Conditions: | |
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. |
QAPP Information Reference(s): | |
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LOE ID: | 6270 |
Pollutant: | Cadmium |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 2 |
Number of Exceedances: | 0 |
Data and Information Type: | Not Specified |
Data Used to Assess Water Quality: | 0 of the 2 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation objective for Cadmium. |
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CRWQCB, 2006) Dissolved Cadmium levels should not exceed the calculated limit based on the formula: Criteria Maximum Concentration (1-hour Average dissolved)=(EXP(1.128*LN(hardness)-3.6867))*(1.136672-(LN(hardness)*0.041838)) (CTR) |
Objective/Criterion Reference: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Compilation of Water Quality Goals | |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Samples were collected at N.Fork Mokelumne River @ Hwy 26. |
Temporal Representation: | The samples were collected from Jun 13 2002 to Jun 26 2002 |
Environmental Conditions: | |
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 10184 |
LOE ID: | 20586 |
Pollutant: | Chromium (total) |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Total |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 2 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | 0 of the 2 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation objective for Chromium. |
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CRWQCB, 2006) |
Objective/Criterion Reference: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Evaluation Guideline: | Chromium levels should not exceed 50 ug/L (Department of Public Health Primary MCL) |
Guideline Reference: | Compilation of Water Quality Goals |
Spatial Representation: | Samples were collected at N.Fork Mokelumne River @ Hwy 26. |
Temporal Representation: | The samples were collected from Jun 13 2002 to Jun 26 2002 |
Environmental Conditions: | |
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 5234 |
LOE ID: | 20657 |
Pollutant: | Copper |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 2 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | 0 of the 2 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation objective for Copper. |
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CRWQCB, 2006) |
Objective/Criterion Reference: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Evaluation Guideline: | Copper levels should not exceed 1300 ug/L (Department of Public Health Primary MCL) |
Guideline Reference: | Compilation of Water Quality Goals |
Spatial Representation: | Samples were collected at N.Fork Mokelumne River @ Hwy 26. |
Temporal Representation: | The samples were collected from Jun 13 2002 to Jun 26 2002 |
Environmental Conditions: | |
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. |
QAPP Information Reference(s): | |
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LOE ID: | 20658 |
Pollutant: | Copper |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Total |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 2 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | 0 of the 2 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation objective for Copper. |
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CRWQCB, 2006) |
Objective/Criterion Reference: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Evaluation Guideline: | Copper levels should not exceed 1300 ug/L (Department of Public Health Primary MCL) |
Guideline Reference: | Compilation of Water Quality Goals |
Spatial Representation: | Samples were collected at N.Fork Mokelumne River @ Hwy 26. |
Temporal Representation: | The samples were collected from Jun 13 2002 to Jun 26 2002 |
Environmental Conditions: | |
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. |
QAPP Information Reference(s): | |
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LOE ID: | 2708 |
Pollutant: | Copper |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 23 |
Number of Exceedances: | 2 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Two out of 23 samples exceeded the criteria. The measurements were made using two different approaches. One set of samples had a higher quantitation limit of 0.5 ug/L. The other set of samples had a lower quantitation limit of 0.03 ug/L. Only two of the higher quantitation limit level samples could be used for this assessment. These were the two samples that were in exceedance of the criteria.
Historical Water Quality Results for Analytical Laboratory Measurements PG&E Company Mokelumne River Project (FERC 137) [Table A2] (PG&E, 2003b). |
Data Reference: | Placeholder reference 2006 303(d) |
Water Quality Objective/Criterion: | Hardness based criteria from USEPA (CTR) ranged from 2.65 ug/L to 0.43 ug/L. |
Objective/Criterion Reference: | Placeholder reference 2006 303(d) |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Three stations along the north fork, NFMR2, NFMR3, and NFMR5. |
Temporal Representation: | Samples taken between 3/14/2001 to 12/07/2005. |
Environmental Conditions: | |
QAPP Information: | Well documented QA/QC including report on certified analytical reports and Chain-of-Custody documentation. |
QAPP Information Reference(s): | |
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LOE ID: | 6272 |
Pollutant: | Copper |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 2 |
Number of Exceedances: | 0 |
Data and Information Type: | Not Specified |
Data Used to Assess Water Quality: | 0 of the 2 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation objective for Copper. |
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CRWQCB, 2006) Dissolved Copper levels should not exceed calculated limit based on the formula: Criteria Maximum Concentration (1-hour Average, dissolved)=(EXP(0.9422*LN(hardness)-1.7))*(0.96) (CTR) |
Objective/Criterion Reference: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Compilation of Water Quality Goals | |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Samples were collected at N.Fork Mokelumne River @ Hwy 26. |
Temporal Representation: | The samples were collected from Jun 13 2002 to Jun 26 2002 |
Environmental Conditions: | |
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 13741 |
LOE ID: | 23176 |
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: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | The Central Valley Regional Water Quality Control Board Surface Water Ambient Monitoring Program collected 18 samples from March 2002 to December 2002. Zero out of 18 samples exceeded the evaluation objective. |
Data Reference: | Monitoring Data from the Surface Water Ambient Monitoring Program (SWAMP), San Joaquin River Basin - 2007 Data Review |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. The objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. |
Objective/Criterion Reference: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 | |
Evaluation Guideline: | The USEPA E. Coli objective of 235/100 mL in any single sample (USEPA 1986). |
Guideline Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 |
Spatial Representation: | Samples were collected at Mokelumne River, North Fork. |
Temporal Representation: | Sampling occurred from March 2002 to December 2002. |
Environmental Conditions: | |
QAPP Information: | Data quality: Good. Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. |
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) |
Lines of Evidence (LOEs) for Decision ID 5205 |
LOE ID: | 2705 |
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: | PATHOGEN MONITORING |
Data Used to Assess Water Quality: | Zero out of 15 samples at this location exceeded the standard for fecal coliform.
Historical Water Quality Results for Analytical Laboratory Measurements PG& E Company Mokelumne River Project (FERC 137) [Table A2]. (PG&E, 2003b). |
Data Reference: | Placeholder reference 2006 303(d) |
Water Quality Objective/Criterion: | In waters designated for contact recreation (REC 1), the fecal coliform concentration based on a minimum of not less than 5 samples for any 30-day period shall not exceed a geometric mean of 200/100 ml, nor shall more than 10 percent of the total number of samples during any 30-day period exceed 400/100 ml - (Central Valley RWQCBs Water Quality Control Plan [Basin Plan]). |
Objective/Criterion Reference: | Placeholder reference 2006 303(d) |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Location: NFMR above Tiger Creek Afterbay at Licensee gage M-38 (NMFR3*).
Rationale: Defines water quality in the NFMR at the end of the reach between Salt Springs Reservoir Dam and Tiger Creek Afterbay. |
Temporal Representation: | |
Environmental Conditions: | |
QAPP Information: | Well documented QA/QC including 174 page report on Certified Analytical Reports and Chain-of-Custody Documentation. |
QAPP Information Reference(s): | |
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LOE ID: | 23178 |
Pollutant: | Fecal Coliform |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 44 |
Number of Exceedances: | 0 |
Data and Information Type: | PATHOGEN MONITORING |
Data Used to Assess Water Quality: | Historical Water Quality Results for Analytical Laboratory Measurements 590 PG&E Company Mokelumne River Project (FERC 137, PG&E, 2003) collected 44 samples from July 2000 to May 2002. Zero out of 4 samples exceeded evaluation objective. |
Data Reference: | Mokelumne River Project (FERC 137) and Mokelumne Watershed correspondence and reports |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. The objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. |
Objective/Criterion Reference: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Evaluation Guideline: | The fecal coliform concentration of 400/100ml based on the geometric mean each month. |
Guideline Reference: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Spatial Representation: | Samples were collected at three locations on the North Fork of the Mokelumne River: NFMR2, NFMR3, and NFMR5. |
Temporal Representation: | Sampling occurred from July 2000 to May 2002. |
Environmental Conditions: | |
QAPP Information: | Data quality: Good. Well documented QA/QC including report on Certified Analytical Reports and chain-of-custody documentation. |
QAPP Information Reference(s): | |
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LOE ID: | 2707 |
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: | PATHOGEN MONITORING |
Data Used to Assess Water Quality: | Zero out of 15 samples at this location exceeded the standard for fecal coliform.
Historical Water Quality Results for Analytical Laboratory Measurements PG& E Company Mokelumne River Project (FERC 137) [Table A2]. (PG&E, 2003ab). |
Data Reference: | Placeholder reference 2006 303(d) |
Water Quality Objective/Criterion: | In waters designated for contact recreation (REC 1), the fecal coliform concentration based on a minimum of not less than 5 samples for any 30-day period shall not exceed a geometric mean of 200/100 ml, nor shall more than 10 percent of the total number of samples during any 30-day period exceed 400/100 ml - (Central Valley RWQCBs Water Quality Control Plan [Basin Plan]). |
Objective/Criterion Reference: | Placeholder reference 2006 303(d) |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Location: Mokelumne River above Electra Powerhouse (MR1*).
Rationale: Defines water quality in the Mokelumne River at the end of the reach between Electra Diversion Dam and Electra Powerhouse. |
Temporal Representation: | Sample taken between 7/26/2000 and 5/14/2002. |
Environmental Conditions: | |
QAPP Information: | Well documented QA/QC including 174 page report on Certified Analytical Reports and Chain-of-Custody Documentation. |
QAPP Information Reference(s): | |
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LOE ID: | 2706 |
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: | PATHOGEN MONITORING |
Data Used to Assess Water Quality: | Zero out of 15 samples at this location exceeded the standard for fecal coliform.
Historical Water Quality Results for Analytical Laboratory Measurements PG& E Company Mokelumne River Project (FERC 137) [Table A2]. (PG&E, 2003b). |
Data Reference: | Placeholder reference 2006 303(d) |
Water Quality Objective/Criterion: | In waters designated for contact recreation (REC 1), the fecal coliform concentration based on a minimum of not less than 5 samples for any 30-day period shall not exceed a geometric mean of 200/100 ml, nor shall more than 10 percent of the total number of samples during any 30-day period exceed 400/100 ml - (Central Valley RWQCBs Water Quality Control Plan [Basin Plan]). |
Objective/Criterion Reference: | Placeholder reference 2006 303(d) |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Location: NFMR below Electra Diversion Dam (NFMR5*).
Rationale: Defines water quality in the NFMR at the head of the reach between Electra Diversion Dam and Electra Powerhouse, and is representative of water quality in the reach between Tiger Creek Afterbay Dam and Electra Diversion Dam. |
Temporal Representation: | Samples taken between 7/26/2000 and 5/14/2002. |
Environmental Conditions: | |
QAPP Information: | Well documented QA/QC including 174 page report on Certified Analytical Reports and Chain-of-Custody Documentation. |
QAPP Information Reference(s): | |
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LOE ID: | 2704 |
Pollutant: | Fecal Coliform |
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: | PATHOGEN MONITORING |
Data Used to Assess Water Quality: | Zero out of 14 samples at this location exceeded the standard for fecal coliform.
Historical Water Quality Results for Analytical Laboratory Measurements PG& E Company Mokelumne River Project (FERC 137) [Table A2]. (PG&E, 2003b). |
Data Reference: | Placeholder reference 2006 303(d) |
Water Quality Objective/Criterion: | In waters designated for contact recreation (REC 1), the fecal coliform concentration based on a minimum of not less than 5 samples for any 30-day period shall not exceed a geometric mean of 200/100 ml, nor shall more than 10 percent of the total number of samples during any 30-day period exceed 400/100 ml - (Central Valley RWQCBs Water Quality Control Plan [Basin Plan]). |
Objective/Criterion Reference: | Placeholder reference 2006 303(d) |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Location: NFMR below Salt Springs Reservoir Dam (NFMR2*).
Rationale: Defines water quality in the NFMR at the head of the reach between Salt Springs Reservoir Dam and Tiger Creek Afterbay. |
Temporal Representation: | Samples taken between 7/26/2000 and 5/14/2002 (none more than 2 months apart). |
Environmental Conditions: | |
QAPP Information: | Well documented QA/QC including 174 page report on Certified Analytical Reports and Chain-of-Custody Documentation. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 10186 |
LOE ID: | 6276 |
Pollutant: | Lead |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 2 |
Number of Exceedances: | 0 |
Data and Information Type: | Not Specified |
Data Used to Assess Water Quality: | 0 of the 2 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation objective for Lead. |
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CRWQCB, 2006) Dissolved Lead levels should not exceed the calculated value based on the formula: Criteria Maximum Concentration (1-hour Average, dissolved)=(EXP(1.273*LN(hardness)-1.46))*(1.46203-(LN(hardness)*0.145712)) (CTR) |
Objective/Criterion Reference: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Compilation of Water Quality Goals | |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Samples were collected at N.Fork Mokelumne River @ Hwy 26. |
Temporal Representation: | The samples were collected from Jun 13 2002 to Jun 26 2002 |
Environmental Conditions: | |
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. |
QAPP Information Reference(s): | |
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LOE ID: | 20635 |
Pollutant: | Lead |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Total |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 2 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | 0 of the 2 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation objective for Lead. |
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CRWQCB, 2006) |
Objective/Criterion Reference: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Evaluation Guideline: | Lead levels should not exceed 15 ug/L (Department of Public Health Primary MCL) |
Guideline Reference: | Compilation of Water Quality Goals |
Spatial Representation: | Samples were collected at N.Fork Mokelumne River @ Hwy 26. |
Temporal Representation: | The samples were collected from Jun 13 2002 to Jun 26 2002 |
Environmental Conditions: | |
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 10188 |
LOE ID: | 6284 |
Pollutant: | Nickel |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 2 |
Number of Exceedances: | 0 |
Data and Information Type: | Not Specified |
Data Used to Assess Water Quality: | 0 of the 2 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation objective for Nickel. |
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CRWQCB, 2006) Dissolved Nickel levels should not exceed the calculated limit based on the formula: Criteria Maximum Concentration (1-hour Average, dissolved)=(EXP(0.846*LN(hardness)+2.255))*(0.998)(CTR) |
Objective/Criterion Reference: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Compilation of Water Quality Goals | |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Samples were collected at N.Fork Mokelumne River @ Hwy 26. Samples were collected at N.Fork Mokelumne River @ Hwy 27. |
Temporal Representation: | The samples were collected from Jun 13 2002 to Jun 26 2002 |
Environmental Conditions: | |
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. |
QAPP Information Reference(s): | |
| |
LOE ID: | 20693 |
Pollutant: | Nickel |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Total |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 2 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | 0 of the 2 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation objective for Nickel. |
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CRWQCB, 2006) |
Objective/Criterion Reference: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Evaluation Guideline: | Nickel levels should not exceed 100 ug/L (Department of Public Health Primary MCL) |
Guideline Reference: | Compilation of Water Quality Goals |
Spatial Representation: | Samples were collected at N.Fork Mokelumne River @ Hwy 26. Samples were collected at N.Fork Mokelumne River @ Hwy 27. |
Temporal Representation: | The samples were collected from Jun 13 2002 to Jun 26 2002 |
Environmental Conditions: | |
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 10189 |
LOE ID: | 20754 |
Pollutant: | Nitrate as Nitrate (NO3) |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 2 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | 0 of the 2 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation objective for Nitrate-N. |
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CRWQCB, 2006) |
Objective/Criterion Reference: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Evaluation Guideline: | Nitrate-N levels should not exceed 45 mg/L (Department of Public Health Primary MCL) |
Guideline Reference: | Compilation of Water Quality Goals |
Spatial Representation: | Samples were collected at N.Fork Mokelumne River @ Hwy 26. |
Temporal Representation: | The samples were collected from Jun 13 2002 to Jun 26 2002 |
Environmental Conditions: | |
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. |
QAPP Information Reference(s): | |
| |
LOE ID: | 6285 |
Pollutant: | Nitrate as Nitrate (NO3) |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 2 |
Number of Exceedances: | 0 |
Data and Information Type: | Not Specified |
Data Used to Assess Water Quality: | 0 of the 2 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation guideline for Nitrate-N. |
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CRWQCB, 2006) |
Objective/Criterion Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology. 4304T |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Samples were collected at N.Fork Mokelumne River @ Hwy 26. |
Temporal Representation: | The samples were collected from Jun 13 2002 to Jun 26 2002 |
Environmental Conditions: | |
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 5185 |
LOE ID: | 2703 |
Pollutant: | Oxygen, Dissolved |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 24 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Zero out of 24 samples at this location had a DO concentration below 7.0 mg/L.
Year 2003 and Historical Water Quality Results for In Situ Measurements PG& E Company Mokelumne River Project (FERC 137) [Table A1]. (PG&E, 2003b). |
Data Reference: | Placeholder reference 2006 303(d) |
Water Quality Objective/Criterion: | Dissolved Oxygen (DO) concentrations shall not be reduced below 7.0 mg/L (for waters designated as COLD)-From the Central Valley Regional Water Quality Control Boards Water Quality Control Plan (Basin Plan). |
Objective/Criterion Reference: | Placeholder reference 2006 303(d) |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Location: Mokelumne River above Electra Powerhouse (MR1*).
Rationale: Defines water quality in the Mokelumne River at the end of the reach between Electra Diversion Dam and Electra Powerhouse. |
Temporal Representation: | Sample taken between 7/26/2000 and 9/11/2003. |
Environmental Conditions: | |
QAPP Information: | Well documented QA/QC including 174 page report on Certified Analytical Reports and Chain-of-Custody Documentation. |
QAPP Information Reference(s): | |
| |
LOE ID: | 2702 |
Pollutant: | Oxygen, Dissolved |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 21 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Zero out of 21 samples at this location had a DO concentration below 7.0 mg/L.
Year 2003 and Historical Water Quality Results for In Situ Measurements PG& E Company Mokelumne River Project (FERC 137) [Table A1]. (PG&E, 2003b). |
Data Reference: | Placeholder reference 2006 303(d) |
Water Quality Objective/Criterion: | Dissolved Oxygen (DO) concentrations shall not be reduced below 7.0 mg/L (for waters designated as COLD). From the Central Valley Regional Water Quality Control Boards Water Quality Control Plan (Basin Plan). |
Objective/Criterion Reference: | Placeholder reference 2006 303(d) |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Location: NFMR below Electra Diversion Dam (NFMR5*).
Rationale: Defines water quality in the NFMR at the head of the reach between Electra Diversion Dam and Electra Powerhouse, and is representative of water quality in the reach between Tiger Creek Afterbay Dam and Electra Diversion Dam. |
Temporal Representation: | |
Environmental Conditions: | |
QAPP Information: | Well documented QA/QC including 174 page report on Certified Analytical Reports and Chain-of-Custody Documentation. |
QAPP Information Reference(s): | |
| |
LOE ID: | 6273 |
Pollutant: | Oxygen, Dissolved |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 25 |
Number of Exceedances: | 0 |
Data and Information Type: | Not Specified |
Data Used to Assess Water Quality: | 0 of the 25 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation objective for Dissolved Oxygen. |
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows |
Water Quality Objective/Criterion: | The Basin Plan Objective sets the minimum Dissolved Oxygen content at 7 mg/L |
Objective/Criterion Reference: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Samples were collected at N.Fork Mokelumne River @ Hwy 26. |
Temporal Representation: | |
Environmental Conditions: | |
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. |
QAPP Information Reference(s): | |
| |
LOE ID: | 2701 |
Pollutant: | Oxygen, Dissolved |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 22 |
Number of Exceedances: | 1 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | One out of 22 samples at this location had a DO concentration below 7.0 mg/L.
Year 2003 and Historical Water Quality Results for In Situ Measurements PG& E Company Mokelumne River Project (FERC 137) [Table A1]. (PG&E, 2003b). |
Data Reference: | Placeholder reference 2006 303(d) |
Water Quality Objective/Criterion: | Dissolved Oxygen (DO) concentrations shall not be reduced below 7.0 mg/L (for waters designated as COLD)-From the Central Valley Regional Water Quality Control Boards Water Quality Control Plan (Basin Plan). |
Objective/Criterion Reference: | Placeholder reference 2006 303(d) |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Location: NFMR above Tiger Creek Afterbay at Licensee gage M-38 (NMFR3*).
Rationale: Defines water quality in the NFMR at the end of the reach between Salt Springs Reservoir Dam and Tiger Creek Afterbay |
Temporal Representation: | |
Environmental Conditions: | |
QAPP Information: | Well documented QA/QC including 174 page report on Certified Analytical Reports and Chain-of-Custody Documentation. |
QAPP Information Reference(s): | |
| |
LOE ID: | 2700 |
Pollutant: | Oxygen, Dissolved |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 21 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Zero out of 21 samples at this location had a DO concentration below 7.0 mg/L.
Year 2003 and Historical Water Quality Results for In Situ Measurements PG& E Company Mokelumne River Project (FERC 137) [Table A1]. (PG&E, 2003b). |
Data Reference: | Placeholder reference 2006 303(d) |
Water Quality Objective/Criterion: | Dissolved Oxygen (DO) concentrations shall not be reduced below 7.0 mg/L (for waters designated as COLD)-From the Central Valley Regional Water Quality Control Boards Water Quality Control Plan (Basin Plan). |
Objective/Criterion Reference: | Placeholder reference 2006 303(d) |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Location: NFMR below Salt Springs Reservoir Dam (NFMR2*).
Rationale: Defines water quality in the NFMR at the head of the reach between Salt Springs Reservoir Dam and Tiger Creek Afterbay. |
Temporal Representation: | Samples taken between 7/26/2000 and 9/10/2003 (none more than 2 months apart). |
Environmental Conditions: | |
QAPP Information: | Well documented QA/QC including 174 page report on Certified Analytical Reports and Chain-of-Custody Documentation. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 10190 |
LOE ID: | 6942 |
Pollutant: | Selenium |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Total |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 1 |
Number of Exceedances: | 0 |
Data and Information Type: | Not Specified |
Data Used to Assess Water Quality: | Zero of the 1 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation objective for Selenium. |
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CRWQCB, 2006) Selenium levels should not to exceed 5 ug/L (CTR) |
Objective/Criterion Reference: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Samples were collected at N.Fork Mokelumne River @ Hwy 26. |
Temporal Representation: | The samples were collected from Oct 24 2002 to Oct 24 2002 |
Environmental Conditions: | |
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. |
QAPP Information Reference(s): | |
| |
LOE ID: | 20345 |
Pollutant: | Selenium |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Total |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 1 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | 0 of the 1 sample was collected by the Surface Water Ambient Monitoring Program exceeded the evaluation objective for Selenium. |
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CRWQCB, 2006) |
Objective/Criterion Reference: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Evaluation Guideline: | Selenium levels should not exceed 50 ug/L (Department of Public Health Primary MCL) |
Guideline Reference: | Compilation of Water Quality Goals |
Spatial Representation: | Sample was collected at N.Fork Mokelumne River @ Hwy 26. |
Temporal Representation: | The sample was collected on Oct 24 2002 |
Environmental Conditions: | |
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 10191 |
LOE ID: | 20836 |
Pollutant: | Specific Conductivity |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 25 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | 0 of the 25 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation objective for Specific Conductivity. |
Data Reference: | San Joaquin River SWAMP Monitoring Data - Northeast Basin |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CRWQCB, 2006) |
Objective/Criterion Reference: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Evaluation Guideline: | The water quality objective used was the California Secondary MCL recommended level of 900 uS/cm. The Basin Plan includes chemical constituent water quality objectives that include (by reference) secondary maximum contaminant levels (MCLs) protective of MUN (CVRWQCB, 2007a).The secondary MCLs for electrical conductivity provide a range of values including a recommended level (900 uS/cm), upper level (1600 uS/cm) and a short-term level (2200 uS/cm). The recommended concentration was used as it is intended to be protective of all drinking water uses. |
Guideline Reference: | Compilation of Water Quality Goals |
Spatial Representation: | Samples were collected at N.Fork Mokelumne River @ Hwy 26. |
Temporal Representation: | The samples were collected from Jan 9 2002 to Dec 23 2002 |
Environmental Conditions: | |
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 10192 |
LOE ID: | 21363 |
Pollutant: | Zinc |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Total |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 2 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Zero of the 2 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation objective for Zinc. |
Data Reference: | San Joaquin River SWAMP Monitoring Data - Northeast Basin |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CRWQCB, 2006) |
Objective/Criterion Reference: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Evaluation Guideline: | Total Zinc levels should not exceed 5000 ug/L (Department of Health Services Primary MCL) |
Guideline Reference: | Compilation of Water Quality Goals |
Spatial Representation: | Samples were collected at N.Fork Mokelumne River @ Hwy 26. Samples were collected at N.Fork Mokelumne River @ Hwy 27. |
Temporal Representation: | The samples were collected from Jun 13 2002 to Jun 26 2002 |
Environmental Conditions: | |
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. |
QAPP Information Reference(s): | |
| |
LOE ID: | 6290 |
Pollutant: | Zinc |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 2 |
Number of Exceedances: | 0 |
Data and Information Type: | Not Specified |
Data Used to Assess Water Quality: | 0 of the 2 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation objective for Zinc. |
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows |
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CRWQCB, 2006) Dissolved Zinc levels should not exceed the calculated limit based on the formula: Criteria Maximum Concentration=EXP((0.8473*LN(hardness))+0.884) (CTR) |
Objective/Criterion Reference: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Compilation of Water Quality Goals | |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Samples were collected at N.Fork Mokelumne River @ Hwy 26. Samples were collected at N.Fork Mokelumne River @ Hwy 27. |
Temporal Representation: | The samples were collected from Jun 13 2002 to Jun 26 2002 |
Environmental Conditions: | |
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 5184 |
LOE ID: | 6274 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 25 |
Number of Exceedances: | 0 |
Data and Information Type: | Not Specified |
Data Used to Assess Water Quality: | 0 of the 25 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation objective for pH. |
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows |
Water Quality Objective/Criterion: | pH levels should not be lower than 6.5 or higher than 8.5 (Basin Plan Objective) |
Objective/Criterion Reference: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Samples were collected at N.Fork Mokelumne River @ Hwy 26. |
Temporal Representation: | The samples were collected from Jan 9 2002 to Dec 23 2002 |
Environmental Conditions: | |
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. |
QAPP Information Reference(s): | |
| |
LOE ID: | 2699 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 24 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Zero out of 24 samples at this location had a pH below 6.5.
Year 2003 and Historical Water Quality Results for In Situ Measurements PG& E Company Mokelumne River Project (FERC 137) [Table A1]. (PG&E, 2003b). |
Data Reference: | Placeholder reference 2006 303(d) |
Water Quality Objective/Criterion: | "pH is not to be depressed below 6.5"- From the Central Valley Regional Water Quality Control Board's Water Quality Control Plan (Basin Plan). |
Objective/Criterion Reference: | Placeholder reference 2006 303(d) |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Location: Mokelumne River above Electra Powerhouse.
Rationale: Defines water quality in the Mokelumne River at the end of the reach between Electra Diversion Dam and Electra Powerhouse. |
Temporal Representation: | Samples taken between 7/26/200 and 9/11/2003. |
Environmental Conditions: | |
QAPP Information: | Well documented QA/QC including 174 page report on Certified Analytical Reports and Chain-of-Custody Documentation. |
QAPP Information Reference(s): | |
| |
LOE ID: | 2696 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 21 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Zero out of 21 samples had a pH below 6.5.
Year 2003 and Historical Water Quality Results for In Situ Measurements PG& E Company Mokelumne River Project (FERC 137) [Table A1]. (PG&E, 2003b). |
Data Reference: | Placeholder reference 2006 303(d) |
Water Quality Objective/Criterion: | "pH is not to be depressed below 6.5"- From the Central Valley Regional Water Quality Control Board's Water Quality Control Plan (Basin Plan). |
Objective/Criterion Reference: | Placeholder reference 2006 303(d) |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Location: NFMR below Salt Springs Reservoir Dam.
Rationale: Defines water quality in the NFMR at the head of the reach between Salt Springs Reservoir Dam and Tiger Creek Afterbay. |
Temporal Representation: | Samples taken between 7/26/2000 and 9/10/2003 (none more than 2 months apart). |
Environmental Conditions: | |
QAPP Information: | Well documented QA/QC including 174 page report on Certified Analytical Reports and Chain-of-Custody Documentation. |
QAPP Information Reference(s): | |
| |
LOE ID: | 2697 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 22 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Zero out of 22 samples at this location had a pH below 6.5.
Year 2003 and Historical Water Quality Results for In Situ Measurements PG& E Companys Mokelumne River Project (FERC 137) [Table A1]. (PG&E, 2003b). |
Data Reference: | Placeholder reference 2006 303(d) |
Water Quality Objective/Criterion: | "pH is not to be depressed below 6.5"- From the Central Valley Regional Water Quality Control Board's Water Quality Control Plan (Basin Plan). |
Objective/Criterion Reference: | Placeholder reference 2006 303(d) |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Location: NFMR above Tiger Creek Afterbay at Licensee gage M-38.
Rationale: Defines water quality in the NFMR at the end of the reach between Salt Springs Reservoir Dam and Tiger Creek Afterbay. |
Temporal Representation: | |
Environmental Conditions: | |
QAPP Information: | Well documented QA/QC including 174 page report on Certified Analytical Reports and Chain-of-Custody Documentation. |
QAPP Information Reference(s): | |
| |
LOE ID: | 2698 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 21 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Zero out of 21 samples at this location had a pH below 6.5.
Year 2003 and Historical Water Quality Results for In Situ Measurements PG& E Company Mokelumne River Project (FERC 137)[Table A1]. (PG&E, 2003b). |
Data Reference: | Placeholder reference 2006 303(d) |
Water Quality Objective/Criterion: | "pH is not to be depressed below 6.5"- From the Central Valley Regional Water Quality Control Board's Water Quality Control Plan (Basin Plan). |
Objective/Criterion Reference: | Placeholder reference 2006 303(d) |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Location: NFMR below Electra Diversion Dam.
Rationale: Defines water quality in the NFMR at the head of the reach between Electra Diversion Dam and Electra Powerhouse, and is representative of water quality in the reach between Tiger Creek Afterbay Dam and Electra Diversion Dam. |
Temporal Representation: | |
Environmental Conditions: | |
QAPP Information: | Well documented QA/QC including 174 page report on Certified Analytical Reports and Chain-of-Custody Documentation. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 5209 |
LOE ID: | 2713 |
Pollutant: | Temperature, water |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Total |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 12 |
Number of Exceedances: | 3 |
Data and Information Type: | Not Specified |
Data Used to Assess Water Quality: | Temperature measurements were taken at 3 monitoring stations (NFMR2, NFMR3, and NFMR5) along the North Fork of the Mokelumne River. For each station there were a total of 4 annual maximum temperature values. There was a value for each sampling year, 2000 to 2003. Based on this data, cumulatively for all 3 stations, there were a total of 12 annual maximum measurements of which 3 were in exceedance of the 21.0 degrees C steelhead criteria (PG&E, 2003b). |
Data Reference: | Placeholder reference 2006 303(d) |
Water Quality Objective/Criterion: | The natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Water Board that such alteration in temperature does not adversely affect beneficial uses. - Central Valley Regional Water Quality Control Boards Water Quality Control Plan (Basin Plan). |
Objective/Criterion Reference: | Placeholder reference 2006 303(d) |
Evaluation Guideline: | The guideline used was from Sullivan et al. (2000) Published Temperature Thresholds-Peer Reviewed Literature which includes reviewed sub-lethal and acute temperature thresholds from a wide range of studies, incorporating information from laboratory-based research, field observations, and risk assessment approaches. This report calculated the Annual Maximum (instantaneous maximum observed during the summer) upper threshold criterion for steelhead trout as 21.0 degrees C. The risk assessment approach used by Sullivan et al. (2000) suggests that an upper threshold for the Annual Maximum of 21.0 degrees C for steelhead will reduce average growth 10% from optimum. |
Guideline Reference: | Placeholder reference 2006 303(d) |
Spatial Representation: | The three sampling stations (NFMR2, NFMR3, and NFMR5) were located on the North Fork of the Mokelumne River. Specific locations were below Salt Springs Reservoir Dam, above Tiger Creek Afterbay at Licensee gage M-38, and below Electra Diversion Dam. |
Temporal Representation: | Temperature measurements were taken during years 2000 to 2003. |
Environmental Conditions: | |
QAPP Information: | QA/QC including 174 page report on Certified Analytical Reports and Chain-of-Custody Documentation. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 5144 |
LOE ID: | 2710 |
Pollutant: | Total Nitrogen as N |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Total |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 15 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Zero out of 15 samples at this location exceed the standard for Total Nitrate as N.
Historical Water Quality Results for Analytical Laboratory Measurements PG& E Company Mokelumne River Project (FERC 137) [Table A2]. (PG&E, 2003b). |
Data Reference: | Placeholder reference 2006 303(d) |
Water Quality Objective/Criterion: | Ten mg/L (MCLs/Title 22 Table 6444-A Primary). |
Objective/Criterion Reference: | Placeholder reference 2006 303(d) |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Location: Mokelumne River above Electra Powerhouse (MR1*).
Rationale: Defines water quality in the Mokelumne River at the end of the reach between Electra Diversion Dam and Electra Powerhouse. |
Temporal Representation: | Sample taken between 3/14/2001 and 5/14/2002. |
Environmental Conditions: | |
QAPP Information: | Well documented QA/QC including 174 page report on Certified Analytical Reports and Chain-of-Custody Documentation. |
QAPP Information Reference(s): | |
| |
LOE ID: | 2709 |
Pollutant: | Total Nitrogen as N |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Total |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 15 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Zero out of 15 samples at this location exceed the standard for Total Nitrate as N.
Historical Water Quality Results for Analytical Laboratory Measurements PG& E Company Mokelumne River Project (FERC 137) [Table A2]. (PG&E, 2003b). |
Data Reference: | Placeholder reference 2006 303(d) |
Water Quality Objective/Criterion: | Ten mg/L (MCLs/Title 22 Table 6444-A Primary). |
Objective/Criterion Reference: | Placeholder reference 2006 303(d) |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Location: NFMR below Electra Diversion Dam (NFMR5*).
Rationale: Defines water quality in the NFMR at the head of the reach between Electra Diversion Dam and Electra Powerhouse, and is representative of water quality in the reach between Tiger Creek Afterbay Dam and Electra Diversion Dam. |
Temporal Representation: | Samples taken between 3/14/2001 and 5/14/2002. |
Environmental Conditions: | |
QAPP Information: | Well documented QA/QC including 174 page report on Certified Analytical Reports and Chain-of-Custody Documentation. |
QAPP Information Reference(s): | |
| |
LOE ID: | 2711 |
Pollutant: | Total Nitrogen as N |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Total |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 14 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Zero out of 14 samples at this location exceed the standard for Total Nitrate as N.
Historical Water Quality Results for Analytical Laboratory Measurements PG& E Company Mokelumne River Project (FERC 137) [Table A2]. (PG&E, 2003b). |
Data Reference: | Placeholder reference 2006 303(d) |
Water Quality Objective/Criterion: | Ten mg/L (MCLs/Title 22 Table 6444-A Primary). |
Objective/Criterion Reference: | Placeholder reference 2006 303(d) |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Location: NFMR below Salt Springs Reservoir Dam (NFMR2*).
Rationale: Defines water quality in the NFMR at the head of the reach between Salt Springs Reservoir Dam and Tiger Creek Afterbay |
Temporal Representation: | Samples taken between 3/14/2001 and 5/14/2002 (none more than 2 months apart). |
Environmental Conditions: | |
QAPP Information: | Well documented QA/QC including 174 page report on Certified Analytical Reports and Chain-of-Custody Documentation. |
QAPP Information Reference(s): | |
| |
LOE ID: | 2712 |
Pollutant: | Total Nitrogen as N |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Total |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 15 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Zero out of 15 samples at this location exceed the standard for Total Nitrate as N.
Historical Water Quality Results for Analytical Laboratory Measurements PG& E Company Mokelumne River Project (FERC 137) [Table A2]. (PG&E, 2003b). |
Data Reference: | Placeholder reference 2006 303(d) |
Water Quality Objective/Criterion: | Ten mg/L (MCLs/Title 22 Table 6444-A Primary). |
Objective/Criterion Reference: | Placeholder reference 2006 303(d) |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Location: NFMR above Tiger Creek Afterbay at Licensee gage M-38 (NMFR3*).
Rationale: Defines water quality in the NFMR at the end of the reach between Salt Springs Reservoir Dam and Tiger Creek Afterbay. |
Temporal Representation: | Samples collected between 3/14/2001 and 5/14/2001. |
Environmental Conditions: | |
QAPP Information: | Well documented QA/QC including 174 page report on Certified Analytical Reports and Chain-of-Custody Documentation. |
QAPP Information Reference(s): |