Water Body Name: | Thermalito Forebay |
Water Body ID: | CAL5154000020000209143205 |
Water Body Type: | Lake & Reservoir |
Lines of Evidence (LOEs) for Decision ID 11650 |
LOE ID: | 21826 |
Pollutant: | Cadmium |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Warm Freshwater Habitat |
Aquatic Life Use: | Warm Freshwater Habitat |
Number of Samples: | 26 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | 26 samples were taken from Thermalito North Forebay between 2002 and 2004. 0 of the 26 samples exceeds guidelines for dissolved cadmium. |
Data Reference: | Project effects on water quality designated beneficial uses for surface waters, and results for bacterial monitoring of swimming areas in 2003. FERC Project No. 2100. Sacramento, CA: State of CA Department of Water Resources |
Water Quality Objective/Criterion: | California Toxics Rule Criteria (USEPA) - Freshwater Aquatic Life ProtectionContinuous Concentration (4-day Average) calculated based on the following formula (EXP(0.7852*LN(hardness)-2.715))*(1.101672-(LN(hardness)*0.041838))U.S. Environmental Protection Agency, Federal Register, Volume 65, No. 97 (Thursday, 18 May 2000), pp. 31682-31719 [California Toxics Rule]; and Federal Register, Volume 66, No. 30 (Tuesday, 13 February 2001), pp. 9960-9962 [California Toxics Rule Correction] http://www.gpoaccess.gov/fr/browse.html. |
Objective/Criterion Reference: | Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency |
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 from Thermalito North Forebay. |
Temporal Representation: | Samples were collected from April 2002 through April 2004. Samples were collected at monthly intervals. |
Environmental Conditions: | |
QAPP Information: | Data quality: Excellent. Quality Control for all of the elements described in section 6.1.4 of the Policy was conducted in accordance with the Laboratory QAPP developed by the State of California Resources Agency Department of Water Resources (DWR, 2005). Quality Assurance Project Plan for Oroville Facilities Relicensing
FERC Project No. 2100 SP-W1. Department of Water Resources (DWR). Oroville Facilities Relicensing FERC Project No. 2100. January 2005. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 11651 |
LOE ID: | 21896 |
Pollutant: | Copper |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Warm Freshwater Habitat |
Aquatic Life Use: | Warm Freshwater Habitat |
Number of Samples: | 47 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | 47 samples were taken from Thermalito North Forebay between April 2002 and April 2004. Zero of the 47 samples exceed guidelines for dissolved copper. |
Data Reference: | Project effects on water quality designated beneficial uses for surface waters, and results for bacterial monitoring of swimming areas in 2003. FERC Project No. 2100. Sacramento, CA: State of CA Department of Water Resources |
Water Quality Objective/Criterion: | California Toxics Rule Criteria (USEPA) - Freshwater Aquatic Life ProtectionContinuous Concentration (4-day Average) calculated based on the fallowing formula (e{.8545xLN[hardness]}-1.702) x(0.960) which incorporates hardnessU.S. Environmental Protection Agency, Federal Register, Volume 65, No. 97 (Thursday, 18 May 2000), pp. 31682-31719 [California Toxics Rule]; and Federal Register, Volume 66, No. 30 (Tuesday, 13 February 2001), pp. 9960-9962 [California Toxics Rule Correction] http://www.gpoaccess.gov/fr/browse.html. |
Objective/Criterion Reference: | Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency |
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 from Thermalito North Forebay |
Temporal Representation: | Samples were collected between April 2002 and April 2004. |
Environmental Conditions: | |
QAPP Information: | Data quality: Good. Quality Control for all of the elements described in section 6.1.4 of the Policy was conducted in accordance with the Laboratory QAPP developed by the State of California Resources Agency Department of Water Resources (DWR, 2005). Quality Assurance Project Plan for Oroville Facilities Relicensing
FERC Project No. 2100 SP-W1. Department of Water Resources (DWR). Oroville Facilities Relicensing FERC Project No. 2100. January 2005. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 11653 |
LOE ID: | 23368 |
Pollutant: | DDT |
LOE Subgroup: | Pollutant-Tissue |
Matrix: | Tissue |
Fraction: | Total |
Beneficial Use: | Commercial or recreational collection of fish, shellfish, or organisms |
Number of Samples: | 2 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Two samples were collected from Lake Oroville, South Thermalito Forebay (swim area) in 2003. One Pike Minnow and one Common Carp fish were analyzed for total DDT (DDD,o,p', DDD,p,p', DDE,p,p', DDMU,p,p'). The OEHHA 2008 fish contaminant goal was used to evaluate presence of an exceedance. One sample of Common Carp and one sample of Pike Minnow did not exceed the OEHHA 2008 screening value. |
Data Reference: | Oroville Facilities Relicensing-FERC Project No. 2100. Contaminant accumulation in fish, sediments, and the aquatic food chain. Sacramento, CA: State of CA Department of Water Resources |
Water Quality Objective/Criterion: | Total identifiable persistent chlorinated hydrocarbon pesticides shall not be present in the water column at concentrations detectable within the accuracy of analytical methods approved by the Environmental Protection Agency or the Executive Officer (CVRWQCB, 2007). |
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: | OEHHA 2008 Screening value of 21 ug/kg total DDT wet weight for fish tissue |
Guideline Reference: | Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene |
Spatial Representation: | Two samples were collected from Lake Oroville, South Thermalito Forebay (swim area). |
Temporal Representation: | Samples were collected in 2003. |
Environmental Conditions: | |
QAPP Information: | Monitoring was conducted in accordance with Central Valley Water Board Monitoring and Reporting Program (order number-2003-0826) requirements (CVRWQCB, 2003). |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 11654 |
LOE ID: | 21898 |
Pollutant: | Lead |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Warm Freshwater Habitat |
Aquatic Life Use: | Warm Freshwater Habitat |
Number of Samples: | 26 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | 26 samples were taken from Thermalito North forebay between 2002 and 2004. None of 26 samples exceed guidelines for dissolved lead. |
Data Reference: | Project effects on water quality designated beneficial uses for surface waters, and results for bacterial monitoring of swimming areas in 2003. FERC Project No. 2100. Sacramento, CA: State of CA Department of Water Resources |
Water Quality Objective/Criterion: | California Toxics Rule Criteria (USEPA) - Freshwater Aquatic Life ProtectionContinuous Concentration (4-day Average) calculated based on the following formula: (e(1.273xLN(hardness))-4.705)x((1.46203-LN(hardness))x0.145712)U.S. Environmental Protection Agency, Federal Register, Volume 65, No. 97 (Thursday, 18 May 2000), pp. 31682-31719 [California Toxics Rule]; and Federal Register, Volume 66, No. 30 (Tuesday, 13 February 2001), pp. 9960-9962 [California Toxics Rule Correction] http://www.gpoaccess.gov/fr/browse.html. |
Objective/Criterion Reference: | Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency |
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 from Thermalito North Forebay. |
Temporal Representation: | Samples were collected from April 2002 through April 2004. Samples were collected at monthly intervals. |
Environmental Conditions: | |
QAPP Information: | Data quality: Excellent. Quality Control for all of the elements described in section 6.1.4 of the Policy was conducted in accordance with the Laboratory QAPP developed by the State of California Resources Agency Department of Water Resources (DWR, 2005). Quality Assurance Project Plan for Oroville Facilities Relicensing
FERC Project No. 2100 SP-W1. Department of Water Resources (DWR). Oroville Facilities Relicensing FERC Project No. 2100. January 2005. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 11657 |
LOE ID: | 21832 |
Pollutant: | PCBs (Polychlorinated biphenyls) |
LOE Subgroup: | Pollutant-Tissue |
Matrix: | Tissue |
Fraction: | Fish fillet |
Beneficial Use: | Commercial or recreational collection of fish, shellfish, or organisms |
Number of Samples: | 2 |
Number of Exceedances: | 2 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Samples were analyzed for the presence of 48 individual PCB congeners and Aroclors 1254 and 1260. Data evaluated were the sum of PCB congeners (total PCBs), reported as ng/g, wet weight. OEHHA and SWAMP recommend use of total PCBs for evaluating contamination.Samples were collected in the North Forebay Recreation Area. The concentration of total PCBs in 2 of 2 composite fish sample exceeded 3.6 ng/g. Concentrations were 186.8 and 281.4 ng/g total PCBs in pikeminnow and common carp composite samples, respectively. Fish collected had fork lengths between 625 and 760 mm. Composite samples were comprised of fillet samples from up to 10 individual fish of the same species. Composites were composed of fish with no greater than 25% difference in fork length between the largest and smallest fish. |
Data Reference: | Oroville Facilities Relicensing-FERC Project No. 2100. Contaminant accumulation in fish, sediments, and the aquatic food chain. Sacramento, CA: State of CA Department of Water Resources |
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 California Office of Environmental Health Hazard Assessment (OEHHA) Fish Contaminant Goal for total PCBs in fish is 3.6 ng/g (3.6 ppb), wet weight, to protect human health. This concentration in fish tissue should not be exceeded, based on a total fish and shellfish consumption rate of 8 ounces (prior to cooking) per week (32 g fish/day) (OEHHA, 2008). This fish contaminant goal incorporates a maximum cancer risk level of one in a million (no more than one additional cancer in a population of one million people consuming these fish). |
Guideline Reference: | Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene |
Spatial Representation: | Samples were collected in the northern part of Thermalito Forebay. Fish were not available in the main area of the Forebay |
Temporal Representation: | Samples were collected on 09/17/02. |
Environmental Conditions: | PCBs have been used in the Feather River watershed in electric power generation and in other activities. Some remediation was performed for two contamination events that occurred in the 1980s: PCB-containing oil applied to a dirt road entered the Ponderosa Reservoir in surface runoff (South Fork Feather River) and PCBs contaminated the soil and water at Belden Forebay (North Fork Feather River) after a landslide damaged powerhouses (CVRWQCB, 1987). |
QAPP Information: | Data quality: Acceptable.. Quality Control for all of the elements described in section 6.1.4 of the Policy was conducted in accordance with the Laboratory QAPP developed by the State of California Resources Agency Department of Water Resources (DWR, 2005). Quality Assurance Project Plan for Oroville Facilities Relicensing
FERC Project No. 2100 SP-W1. Department of Water Resources (DWR). Oroville Facilities Relicensing FERC Project No. 2100. January 2005. |
QAPP Information Reference(s): |