|
LOE ID: |
22586 |
|
Pollutant: |
Mercury |
LOE Subgroup: |
Pollutant-Tissue |
Matrix: |
Tissue |
Fraction: |
Total |
|
Beneficial Use: |
Commercial or recreational collection of fish, shellfish, or organisms |
|
Number of Samples: |
4 |
Number of Exceedances: |
2 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Fish were sampled for tissue analysis at one location from Pardee Reservoir. A total of 2 out of 4 samples exceeded the USEPA fish tissue criterion for human health. The average wet weight mercury concentration in fish tissue was 0.29 ppm for all 4 samples collected. The number of fish collected per sample, the measured mercury concentrations in fish tissue, and the number of exceedances are, by species: Channel Catfish- 2 composite samples, 0.1 and 0.55 ppm, 1 exceedance; Largemouth Bass- 2 composite samples, 0.14 and 0.38 ppm, 1 exceedance. All 4 composite samples were collected from fish with average total lengths greater than 150 mm, which represent fish most commonly caught and consumed by sport fishers and their families. |
Data Reference: |
SWRCB-DWQ. 2002. Toxic Substances Monitoring Program: Freshwater Bioaccumulation Monitoring: TSM Program Data 1978-2000. State Water Resources Control Board, Division of Water Quality |
|
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 USEPA Fish Tissue Residue Criterion for methylmercury in fish is 0.3 mg/kg (0.3 ppm) for the protection of human health. This is the concentration in fish tissue that should not be exceeded based on a total fish and shellfish consumption-weighted rate of 0.0175 kg fish/day. (USEPA, 2001) |
Guideline Reference: |
Water Quality Criterion for the Protection of Human Health: Methylmercury. Final. United States Environmental Protection Agency Office of Science and Technology Office of Water. EPA-823-R-01-001. January 2001 |
|
Spatial Representation: |
Samples were collected at one location from the Channel Arm of Pardee Reservoir. |
Temporal Representation: |
Fish samples were collected during three sampling events from 7/26/1984 to 8/24/1989. |
Environmental Conditions: |
Significant gold mining activity occurred during the Gold Rush era within the Pardee Reservoir watershed and the lands inundated by Pardee Reservoir (USGS, 2005). |
QAPP Information: |
Data quality: Good.. Quality Control for the fish sampling, tissue preparation, mercury analysis, and QA sample analysis portions of this study was conducted as described in the Toxic Substance Monitoring Reports for 1984, 1985 and 1988-89 (Agee, 1986; Rasmussen et al., 1987; Rasmussen and Blethrow, 1991). |
QAPP Information Reference(s): |
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|
LOE ID: |
22579 |
|
Pollutant: |
Mercury |
LOE Subgroup: |
Pollutant-Tissue |
Matrix: |
Tissue |
Fraction: |
Total |
|
Beneficial Use: |
Commercial or recreational collection of fish, shellfish, or organisms |
|
Number of Samples: |
40 |
Number of Exceedances: |
5 |
|
Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Fish were sampled for tissue analysis at one location from Pardee Reservoir. A total of 5 out of 40 samples exceeded the USEPA fish tissue criterion for human health. The average wet weight mercury concentration in fish tissue was 0.17 ppm for all 40 samples collected. The number of fish collected per sample, the measured mercury concentrations in fish tissue, and the number of exceedances are, by species: Carp- 5 samples, 0.03-0.08 ppm (average 0.05 ppm), no exceedances; Channel Catfish- 10 samples, 0.08-0.4 ppm (average 0.22 ppm), 2 exceedances; Kokanee- 13 samples, 0.09-0.12 ppm (average 0.11 ppm), no exceedances; Largemouth Bass- 12 samples, 0.15-0.4 ppm (average 0.25 ppm), 3 exceedances. All 40 samples were collected from fish with total lengths greater than 150 mm, which represent fish most commonly caught and consumed by sport fishers and their families. |
Data Reference: |
Fish Mercury Project, Year 1 Annual Report, Sport Fish Sampling and Analysis. Collaborating parties: San Francisco Estuary Institute, California Department of Fish and Game, Moss Landing Marine Laboratories, California Office of Environmental Health Hazard Assessment. Final Technical Report. CBDA Project # ERP 02D-P6729. May 2007 |
|
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 USEPA Fish Tissue Residue Criterion for methylmercury in fish is 0.3 mg/kg (0.3 ppm) for the protection of human health. This is the concentration in fish tissue that should not be exceeded based on a total fish and shellfish consumption-weighted rate of 0.0175 kg fish/day. (USEPA, 2001) |
Guideline Reference: |
Water Quality Criterion for the Protection of Human Health: Methylmercury. Final. United States Environmental Protection Agency Office of Science and Technology Office of Water. EPA-823-R-01-001. January 2001 |
|
Spatial Representation: |
Samples were collected at one location from the North Arm of Pardee Reservoir. |
Temporal Representation: |
Fish samples were collected during two sampling events: from 9/14/2005 to 9/15/2005, and on 4/18/2006. |
Environmental Conditions: |
Significant gold mining activity occurred during the Gold Rush era within the Pardee Reservoir watershed and the lands inundated by Pardee Reservoir (USGS, 2005). |
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 Moss Landing Marine Laboratories (MLML, 2005). This data was also collected and analyzed in accordance with the CALFED Mercury Project QAPP (Puckett and van Buuren, 2000). |
QAPP Information Reference(s): |