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Federal facility (Nonclassifiable Establishments), Oak Ridge, Tennessee. NPDES permit TN0002950, in force until Mar 31, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | minimum | ≥ 6 SU | all year | 05A |
| pH | maximum | ≤ 9 SU | all year | 05A |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 05A |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 05A |
| pH | minimum | ≥ 6 SU | all year | 100 |
| pH | maximum | ≤ 9 SU | all year | 100 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 100 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 100 |
| pH | minimum | ≥ 6 SU | all year | 142 |
| pH | maximum | ≤ 9 SU | all year | 142 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 142 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | 142 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 142 |
| pH | minimum | ≥ 6 SU | all year | 150 |
| pH | maximum | ≤ 9 SU | all year | 150 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 150 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 150 |
| pH | minimum | ≥ 6 SU | all year | 170 |
| pH | maximum | ≤ 9 SU | all year | 170 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 170 |
| Chromium, hexavalent [as Cr] | daily maximum | report only (mg/L) | all year | 170 |
| Chromium, hexavalent [as Cr] | daily maximum | report only (mg/L) | all year | 170 |
| Chromium, hexavalent [as Cr] | daily maximum | report only (mg/L) | all year | 170 |
| Chromium, hexavalent [as Cr] | daily maximum | report only (mg/L) | all year | 170 |
| Chromium, hexavalent [as Cr] | daily maximum | report only (mg/L) | all year | 170 |
| Chromium, hexavalent [as Cr] | daily maximum | report only (mg/L) | all year | 170 |
| Chromium, hexavalent [as Cr] | daily maximum | report only (mg/L) | all year | 170 |
| Chromium, hexavalent [as Cr] | daily maximum | report only (mg/L) | all year | 170 |
| Chromium, hexavalent [as Cr] | daily maximum | report only (mg/L) | all year | 170 |
| Chromium, hexavalent [as Cr] | daily maximum | report only (mg/L) | all year | 170 |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | 170 |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | 170 |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | 170 |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | 170 |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | 170 |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | 170 |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | 170 |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | 170 |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | 170 |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | 170 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 170 |
| pH | minimum | ≥ 6 SU | all year | 180 |
| pH | maximum | ≤ 9 SU | all year | 180 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 180 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 180 |
| pH | minimum | ≥ 6 SU | all year | 190 |
| pH | maximum | ≤ 9 SU | all year | 190 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 190 |
| Oil and grease, hexane extr method | daily maximum | report only (mg/L) | all year | 190 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 190 |
| pH | minimum | ≥ 6 SU | all year | 195 |
| pH | maximum | ≤ 9 SU | all year | 195 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 195 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 195 |
| pH | minimum | ≥ 6 SU | all year | 198 |
| pH | maximum | ≤ 9 SU | all year | 198 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 198 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 198 |
| pH | minimum | ≥ 6 SU | all year | 210 |
| pH | maximum | ≤ 9 SU | all year | 210 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 210 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 210 |
| pH | minimum | ≥ 6 SU | all year | 230 |
| pH | maximum | ≤ 9 SU | all year | 230 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 230 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 230 |
| pH | minimum | ≥ 6 SU | all year | 280 |
| pH | maximum | ≤ 9 SU | all year | 280 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 280 |
| Polychlorinated biphenyls [PCBs] | daily maximum | report only (mg/L) | all year | 280 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 280 |
| pH | minimum | ≥ 6 SU | all year | 294 |
| pH | maximum | ≤ 9 SU | all year | 294 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 294 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 294 |
| pH | minimum | ≥ 6 SU | all year | 350 |
| pH | maximum | ≤ 9 SU | all year | 350 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 350 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 350 |
| pH | minimum | ≥ 6 SU | all year | 430 |
| pH | maximum | ≤ 9 SU | all year | 430 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 430 |
| Benzidine | daily maximum | report only (mg/L) | all year | 430 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 430 |
| pH | minimum | ≥ 6 SU | all year | 490 |
| pH | maximum | ≤ 9 SU | all year | 490 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 490 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 490 |
| pH | minimum | ≥ 6 SU | all year | 890 |
| pH | maximum | ≤ 9 SU | all year | 890 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 890 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 890 |
| pH | minimum | ≥ 6 SU | all year | 992 |
| pH | maximum | ≤ 9 SU | all year | 992 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 992 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 992 |
Cited limits by parameter: Tennessee's rules and the federal ones.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/TN0002950 · MCP: https://passage-data.com/mcp