|Water Body Name:||San Felipe Creek (Imperial and San Diego Counties)|
|Water Body ID:||CAR7222000020000127085616|
|Water Body Type:||River & Stream|
San Felipe Creek (Imperial and San Diego Counties)
|Final Listing Decision:||Do Not List on 303(d) list (TMDL required list)|
|Last Listing Cycle's Final Listing Decision:||Do Not List on 303(d) list (TMDL required list)(2016)|
|Impairment from Pollutant or Pollution:||Pollutant|
|Regional Board Conclusion:||Regional Board Conclusion:
The pollutant was considered for placement on the section 303(d) list in a previous cycle.
No new information was reviewed for this current assessment cycle. Therefore, the previous conclusion remains unchanged, and is as follows:
Regional Board Conclusion:
This pollutant was considered for placement on the section 303(d) list in a previous assessment cycle.
No new information was reviewed for this current assessment cycle. However, a use rating of the LOE No. 5437 is changed from fully supporting to insufficient due to insufficient sample size required by the Listing Policy to determine if the water quality objectives are met. No new data were assessed in current assessment cycle. Therefore, the previous conclusion remains unchanged, and is as follows:
This pollutant is being considered for placement on the section 303(d) list under section 3.5 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. None of the samples exceeded the water quality objective.
Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category.
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. None of 3 fish tissue samples exceeded the Office of Environmental Health hazard Assessment fish tissue guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
|Regional Board Decision Recommendation:||This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current cycle. The decision has not changed.|
|Beneficial Use:||Commercial or recreational collection of fish, shellfish, or organisms|
|Number of Samples:||3|
|Number of Exceedances:||0|
|Data and Information Type:||Fish tissue analysis|
|Data Used to Assess Water Quality:||Three whole fish composite samples were taken at 1 location in the creek. The fish samples were generally collected in 10/1986 and 7/87. Of these total samples, none exceeded the OEHHA Fish Contaminant Goal (TSMP, 2007).|
|Data Reference:||Toxic Substances Monitoring Program (TSMP) Data for organic and inorganic chemicals in fish and sediment samples collected from water bodies located in the Colorado River Basin-Region 7. 1978-2000. State Water Resources Control Board. Sacramento, CA.|
|Water Quality Objective/Criterion:||Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).|
|Objective/Criterion Reference:||Water Quality Control Plan Colorado River Basin, with amendments adopted through June 2006|
|Evaluation Guideline:||Office of Environmental Health Hazard Assessment (OEHHA) Fish Contaminant Goal of 7400 ug/kg to protect human health when consuming fish (OEHHA, 2008).|
|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 from the following San Felipe Creek locations: downstream of the Highway 86 bridge and in the San Sebastion Marsh.|
|Temporal Representation:||Fish tissue samples were collected on 10/16/1986 and 7/07/1987. Three whole fish composite samples of redbelly tilapia, sailfin molly, and mosquitofish were collected. One redbelly tilapia whole fish composite sample was collected on 7/07/1987. One sailfin molly whole fish composite sample was collected on 7/07/1987. One mosquitofish whole fish composite sample was collected on 10/16/1986.|
|QAPP Information:||The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies a Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).|
|QAPP Information Reference(s):||Toxic Substances Monitoring Program 1991 Data Report. 93-1WQ. State Water Resources Control Board (SWRCB), Division of Water Quality. Sacramento, CA.|