Water Body Name: | Lower Bear River Reservoir |
Water Body ID: | CAL5326004320020430103904 |
Water Body Type: | Lake & Reservoir |
Lines of Evidence (LOEs) for Decision ID 4459 |
LOE ID: | 730 |
Pollutant: | Copper |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 14 |
Number of Exceedances: | 1 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | One out of 14 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 one of the higher quantitation limit level samples could be used for this assessment. This sample was the sample that exceeded the criteria.
[Preliminary Supplemental Copper Monitoring Results March - December 2002] (PG&E, 2003b). |
Data Reference: | Placeholder reference 2006 303(d) |
Water Quality Objective/Criterion: | Hardness based criteria from USEPA (CTR) for freshwater ranged from 1.36 ug/L to 0.50 ug/L. |
Objective/Criterion Reference: | Placeholder reference 2006 303(d) |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Sample sites: LBRR1 - top, Lower Bear River Reservoir - surface sample near dam. LBRR1 - middle, Lower Bear River Reservoir - mid depth sample near dam. LBRR1 - bottom, Lower Bear River Reservoir - bottom sample near dam. |
Temporal Representation: | Samples were taken from 4/23/2002 to 09/09/2003. |
Environmental Conditions: | |
QAPP Information: | Well documented QA/QC including report on certified analytical reports and chain-of-custody documentation. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 4461 |
LOE ID: | 734 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 13 |
Number of Exceedances: | 3 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | pH was measured at the top, middle, and bottom of the Lower Bear Reservoir. 3 (of 13) average pH measurements were below the Basin Plan pH criterion (6.5). (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: | Lower Bear River Reservoir sample collected near the dam from the epilimnion (Top).
Latitude (38° 32.365 N); Longitude (120° 15.162 W). |
Temporal Representation: | Samples taken monthly* from 4/12/2002 to 12/11/2002.
*(No sample taken 11/13/2002 due to snow storm). |
Environmental Conditions: | |
QAPP Information: | Well documented QA/QC including report on Certified Analytical Reports and Chain-of-Custody Documentation. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 4460 |
LOE ID: | 731 |
Pollutant: | Oxygen, Dissolved |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 8 |
Number of Exceedances: | 2 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Two out of 8 samples at this location had a DO concentration below 7.0 mg/L. (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 Board's Water Quality Control Plan (Basin Plan). |
Objective/Criterion Reference: | Placeholder reference 2006 303(d) |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Lower Bear River Reservoir sample collected near the dam from the epilimnion (Top).
Latitude (38° 32.365 N); Longitude (120° 15.162 W). |
Temporal Representation: | Samples taken monthly* from 4/12/2002 to 12/11/2002.
*(No sample taken 11/13/2002 due to snow storm). |
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: | 732 |
Pollutant: | Oxygen, Dissolved |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 6 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Zero out of 6 samples at this location had a DO concentration below 7.0 mg/L. (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 Board's Water Quality Control Plan (Basin Plan). |
Objective/Criterion Reference: | Placeholder reference 2006 303(d) |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Lower Bear River Reservoir sample collected near the dam from the epilimnion (Middle).
Latitude (38° 32.365 N); Longitude (120° 15.162 W). |
Temporal Representation: | Samples taken monthly from 5/16/2002 to 10/23/2002. |
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: | 733 |
Pollutant: | Oxygen, Dissolved |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 8 |
Number of Exceedances: | 1 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | One out of 8 samples at this location had a DO concentration below 7.0 mg/L. (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 Board's Water Quality Control Plan (Basin Plan). |
Objective/Criterion Reference: | Placeholder reference 2006 303(d) |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Lower Bear River Reservoir sample collected near the dam from the hypolimnion
(Bottom). Latitude (38° 32.365 N); Longitude (120° 15.162 W). |
Temporal Representation: | Samples taken monthly* from 4/23/2002 to 12/11/2002.
*(No sample taken on 11/13/02 due to snow storm). |
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): |