| Water Body Name: | Donner Lake |
| Water Body ID: | CAL6352002119980806104900 |
| Water Body Type: | Lake & Reservoir |
DECISION ID |
6488 |
Region 6 |
Donner Lake |
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| Pollutant: | Priority Organics |
| Final Listing Decision: | Do Not Delist from 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | List on 303(d) list (TMDL required list)(2006) |
| Revision Status | Revised |
| Sources: | Source Unknown |
| Expected TMDL Completion Date: | 2019 |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | 303(d) listing decisions made prior to 2006 were not held in an assessment database. The Regional Board will update this decision when new data and information become available and are assessed. Delisting cannot be justified at this time.
The original listing for "Priority Organics" was for violation of Office of Environmental Health Hazard Assessment (OEHHA) MTRL fish tissue criteria for PCBs and chlordane. The MTRLs were updated prior to the 2002 assessment cycle, and only the MTRL for PCBs was being violated at the time. For 2006, State Water Board staff prepared a line of evidence assessing the PCB data against OEHHA's Screening Value criterion. Two out of two samples violated that criterion. Region 6 sponsored additional tissue sampling from Donner Lake, and the data from that study, along with the data used in the original listing, are now undergoing quality assurance/quality control checks. The final data from this study will be used in the next assessment cycle and may result in replacement of the "Priority Organics" listing with more specific listings for individual chemicals. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
| USEPA Action (if applicable): | USEPA approved the listing of this water body as a water quality limited segment requiring a TMDL for this pollutant. |
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| LOE ID: | 4603 | ||||
| Pollutant: | Priority Organics | ||||
| LOE Subgroup: | Pollutant-Tissue | ||||
| Matrix: | Tissue | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Commercial or recreational collection of fish, shellfish, or organisms | ||||
| 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) | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Unspecified | ||||
| Objective/Criterion Reference: | Placeholder reference pre-2006 303(d) | ||||
| Evaluation Guideline: | Unspecified | ||||
| Guideline Reference: | Placeholder reference pre-2006 303(d) | ||||
| Spatial Representation: | Unspecified | ||||
| Temporal Representation: | Unspecified | ||||
| Environmental Conditions: | Unspecified | ||||
| QAPP Information: | Unspecified | ||||
| QAPP Information Reference(s): | |||||
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| LOE ID: | 753 | ||||
| Pollutant: | PCBs (Polychlorinated biphenyls) | ||||
| 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: | 2 | ||||
| Data and Information Type: | Not Specified | ||||
| Data Used to Assess Water Quality: | Two out of 2 samples exceeded. Two filet composite samples of lake trout were collected. Lake trout were collected in 1993 and 1996. The guideline was exceeded in both samples (TSMP, 2002). | ||||
| Data Reference: | Placeholder reference 2006 303(d) | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Basin Plan: There shall be no detectable increase in bioaccumulation of pesticides in aquatic life. | ||||
| Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
| Evaluation Guideline: | OEHHA Screening Value is 20 ng/g for total PCBs (Brodberg & Pollock, 1999). | ||||
| Guideline Reference: | Placeholder reference 2006 303(d) | ||||
| Spatial Representation: | One station located about 1 mile west of the dam. | ||||
| Temporal Representation: | Samples were collected 9/16/93 and 9/18/96. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Toxic Substances Monitoring Program 1992-93 Data Report.
Environmental Chemistry Quality Assurance and Data Report for the Toxic Substances Monitoring Program, 1996-2000. Department of Fish and Game. |
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| QAPP Information Reference(s): | |||||