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LOE ID: |
22628 |
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Pollutant: |
Mercury |
LOE Subgroup: |
Pollutant-Tissue |
Matrix: |
Tissue |
Fraction: |
Total |
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Beneficial Use: |
Commercial or recreational collection of fish, shellfish, or organisms |
|
Number of Samples: |
6 |
Number of Exceedances: |
4 |
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Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: |
Fish were sampled for tissue analysis at one location from this reach. A total of 4 out of 6 samples exceeded the USEPA fish tissue criterion for human health. The average wet weight mercury concentration in fish tissue was 0.54 ppm for all 6 samples collected. The number of fish collected per sample, the measured mercury concentrations in fish tissue, and the number of exceedances are, by species: Largemouth Bass- 3 composite samples, 0.60-0.68 ppm (average 0.64 ppm), 3 exceedances; Striped Bass- 1 sample, 0.81 ppm, 1 exceedance; White Catfish- 2 composite samples, 0.21 ppm, 0.29 ppm, no exceedances. All 6 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: |
Sacramento River Watershed Program Annual Reports for 1999-2000, 2000-2001, 2001-2002, 2002-2003, and 2003-2004; and BDAT data 1998-2003 |
|
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 |
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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 this reach of Steelhead Creek just downstream of the El Camino Avenue bridge crossing. |
Temporal Representation: |
Fish samples were collected during three sampling events conducted during 1998, 1999 and 2000. |
Environmental Conditions: |
Significant gold mining activity occurred during the Gold Rush era within the Steelhead Creek watershed (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 Sacramento River Watershed Program QAPP prepared by Larry Walker Associates (LWA, 1998; LWA, 1999; LWA, 2000). |
QAPP Information Reference(s): |
Quality Assurance Project Plans prepared for Sacramento River Watershed Program |
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|
LOE ID: |
22629 |
|
Pollutant: |
Mercury |
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: |
Fish were sampled for tissue analysis at one location from this reach. A total of 0 out of 2 samples exceeded the USEPA fish tissue criterion for human health. The average wet weight mercury concentration in fish tissue was 0.23 ppm for the 2 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- one 3-fish composite sample, 0.20 ppm, no exceedances; Sacramento Sucker- one 3-fish composite sample, 0.26 ppm, no exceedances. Both 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 |
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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 this reach of Steelhead Creek just downstream of the El Camino Ave. bridge crossing. |
Temporal Representation: |
Fish samples were collected during one sampling event on 5/15/1985. |
Environmental Conditions: |
Significant gold mining activity occurred during the Gold Rush era within the Steelhead Creek watershed (USGS, 2005). |
QAPP Information: |
Data quality: Excellent.. 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 Report for 1985 (Rasmussen et al., 1987). |
QAPP Information Reference(s): |
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DECISION ID |
7073 |
|
Pollutant: |
PCBs (Polychlorinated biphenyls) |
Final Listing Decision: |
List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: |
List on 303(d) list (TMDL required list)(2006) |
Revision Status |
Original |
Sources: |
Agriculture | Industrial Point Sources | Urban Runoff/Storm Sewers |
Expected TMDL Completion Date: |
2020 |
Impairment from Pollutant or Pollution: |
Pollutant |
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Weight of Evidence: |
303(d) listing decisions made prior to 2006 were not held in an assessment database. The Regional Boards will update this decision when new data and information become available and are assessed. |
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RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The decision has not changed. |
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SWRCB Board Decision / Staff Recommendation: |
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USEPA Decision: |
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Lines of Evidence (LOEs) for Decision ID 7073 |
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LOE ID: |
4493 |
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Pollutant: |
PCBs (Polychlorinated biphenyls) |
LOE Subgroup: |
Pollutant-Tissue |
Matrix: |
Tissue |
Fraction: |
Not Recorded |
|
Beneficial Use: |
Commercial or recreational collection of fish, shellfish, or organisms |
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Number of Samples: |
0 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
Not Specified |
Data Used to Assess Water Quality: |
Unspecified--This LOE is a placeholder to support a 303(d) listing decision made prior to 2006. |
Data Reference: |
Placeholder reference pre-2006 303(d) |
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Water Quality Objective/Criterion: |
|
Objective/Criterion Reference: |
|
Evaluation Guideline: |
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Guideline Reference: |
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Spatial Representation: |
Unspecified |
Temporal Representation: |
Unspecified |
Environmental Conditions: |
Unspecified |
QAPP Information: |
Unspecified |
QAPP Information Reference(s): |