| Pollutant: |
Specific Conductivity |
| Final Listing Decision: |
Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: |
New Decision |
| Revision Status |
Revised |
| Impairment from Pollutant or Pollution: |
Pollutant |
| |
| Regional Board Conclusion: |
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available |
| |
| Regional Board Decision Recommendation: |
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
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| State Board Review of Regional Board Conclusion and Recommendation: |
|
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| State Board Decision Recommendation: |
After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
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Line of Evidence (LOE) for Decision ID 170346, Specific Conductivity
|
Region 6 |
Tinnemaha Creek (Inyo County) |
|
| |
| LOE ID: |
341904 |
| |
| Pollutant: |
Specific Conductivity |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
None |
| |
| Beneficial Use: |
Municipal & Domestic Supply |
| |
| Number of Samples: |
1 |
| Number of Exceedances: |
0 |
| |
| Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
| Data Used to Assess Water Quality: |
Water Board staff assessed USGS California Water Science Center data for Tinnemaha Creek (Inyo County) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for SpecificConductivity. |
| Data Reference: |
WQX from the NWQMP for the 2026 Integrated Report in Region 6 |
| |
| SWAMP Data: |
Non-SWAMP |
| |
| Water Quality Objective/Criterion: |
Water designated as MUN shall not contain concentrations of chemical constituents in excess of the maximum contaminant level (MCL) or secondary maximum contaminant level (SMCL) based upon drinking water standards specified in Title 22 of the California Code of Regulations (Water Quality Control Plan, Lahontan Region). |
| Objective/Criterion Reference: |
Water Quality Control Plan for the Lahontan Region (as amended) |
| |
| Evaluation Guideline: |
California Maximum Contaminant Levels (MCLs) apply to ambient waters under the Lahontan Basin Plan's 'Chemical Constituents' objective. The California Secondary MCL for specific conductivity is 900 uS/cm. |
| Guideline Reference: |
California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring |
| |
| Spatial Representation: |
The samples were collected at 1 monitoring site: USGS-10276500 (TINEMAHA C NR BIG PINE CA). |
| Temporal Representation: |
The samples were collected between the dates of 2015-08-26 and 2015-08-26 |
| Environmental Conditions: |
|
| QAPP Information: |
QAPP for USGS Data Collected during the 2026 Integrated Report Cycle |
| QAPP Information Reference(s): |
QAPP for USGS Data Collected during the 2026 Integrated Report Cycle |
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