| Water Body Name: | American River, South Fork (below Slab Creek Reservoir to Folsom Lake) |
| Water Body ID: | CAR5143206020060808153403 |
| Water Body Type: | River & Stream |
DECISION ID |
6781 |
Region 5 |
American River, South Fork (below Slab Creek Reservoir to Folsom Lake) |
||
| Pollutant: | Mercury |
| 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 | Original |
| Sources: | Resource Extraction |
| Expected TMDL Completion Date: | 2021 |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for removal from the section 303(d) list under sections 4.1 and 4.5 of the Listing Policy. Under section 4.1, a single line of evidence is necessary to assess listing status. One line of evidence is available in the administrative record to assess pollutant.
Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the section 303(d) list. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met. |
| 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. |
|
|||||
| LOE ID: | 2594 | ||||
| Pollutant: | Mercury | ||||
| LOE Subgroup: | Testimonial Evidence | ||||
| Matrix: | Not Specified | ||||
| Fraction: | None | ||||
| 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: | Information from RWQCB staff: The listing should start below Slab Creek Reservoir and extend to Folsom Lake. | ||||
| Data Reference: | Placeholder reference 2006 303(d) | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | |||||
| Objective/Criterion Reference: | |||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | |||||
| Temporal Representation: | |||||
| Environmental Conditions: | |||||
| QAPP Information: | QA Info Missing | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 2595 | ||||
| Pollutant: | Mercury | ||||
| LOE Subgroup: | Pollutant-Tissue | ||||
| Matrix: | Tissue | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Commercial or recreational collection of fish, shellfish, or organisms | ||||
| Number of Samples: | 24 | ||||
| Number of Exceedances: | 11 | ||||
| Data and Information Type: | Fish tissue analysis | ||||
| Data Used to Assess Water Quality: | Eleven of 24 samples exceeded the mercury tissue guideline. Fish tissue was analyzed from Sacramento pike minnow, rainbow trout, and brown trout. The reporting limit was 0.01 mg/kg (CDFG, 2005). | ||||
| Data Reference: | Placeholder reference 2006 303(d) | ||||
| SWAMP Data: | Non-SWAMP | ||||
| 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: | Placeholder reference 2006 303(d) | ||||
| Evaluation Guideline: | An OEHHA guideline of 0.3 mg/kg wet weight was used (Brodberg and Pollock, 1999). | ||||
| Guideline Reference: | Placeholder reference 2006 303(d) | ||||
| Spatial Representation: | Samples were collected in one location in the Camp Lotus reach of the South Fork of the American River and at Slab Creek Reservoir. | ||||
| Temporal Representation: | Samples were collected between 6/15/2004 and 7/29/2004. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | DFG Office of Spill Prevention and Response Laboratory QAPP. Data quality requirements acceptable. | ||||
| QAPP Information Reference(s): | |||||