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Federal facility (National Security), major discharger, Oak Ridge, Tennessee. NPDES permit TN0002941 expired Dec 31, 2023; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Copper, total [as Cu] | monthly average | ≤ .32 lb/d | all year | V13 |
| Copper, total [as Cu] | daily maximum | ≤ .5 lb/d | all year | V13 |
| Mercury, total [as Hg] | monthly average | report only (lb/d) | all year | V13 |
| Mercury, total [as Hg] | daily maximum | report only (lb/d) | all year | V13 |
| 1,2,4,5-Tetrachlorobenzene | daily maximum | report only (lb/d) | all year | V13 |
| Hydrogen peroxide | monthly average | report only (mg/L) | all year | X01 |
| Hydrogen peroxide | daily maximum | report only (mg/L) | all year | X01 |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 6 mg/L | all year | X01 |
| pH | minimum | ≥ 6 SU | all year | X01 |
| pH | maximum | ≤ 9 SU | all year | X01 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | X01 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | X01 |
| Solids, total suspended | monthly average | ≤ 57.5 lb/d | all year | X01 |
| Solids, total suspended | daily maximum | ≤ 86.3 lb/d | all year | X01 |
| Nitrogen, organic total [as N] | daily maximum | report only (mg/L) | all year | X01 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 5.25 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | X01 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.5 mg/L | May–Oct | X01 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 7.9 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | X01 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.75 mg/L | May–Oct | X01 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 13.14 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | X01 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 6.26 lb/d | May–Oct | X01 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 19.78 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | X01 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 9.39 lb/d | May–Oct | X01 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | X01 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | X01 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | X01 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | X01 |
| E. coli | geometric mean | ≤ 126 MPN/100mL | all year | X01 |
| E. coli | daily maximum | ≤ 941 MPN/100mL | all year | X01 |
| Peracetic Acid | monthly average | ≤ 1 mg/L | all year | X01 |
| Peracetic Acid | daily maximum | report only (mg/L) | all year | X01 |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year | X01 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 10 mg/L | all year | X01 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 15 mg/L | all year | X01 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 19.2 lb/d | all year | X01 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 28.8 lb/d | all year | X01 |
| IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia | minimum | > 44.3 % | all year | X01 |
| IC25 Static Renewal 7 Day Chronic Pimephales | minimum | > 44.3 % | all year | X01 |
| Temperature, water deg. centigrade | daily maximum | ≤ 30.5 deg C | all year | X12 |
| pH | minimum | ≥ 6 SU | all year | X12 |
| pH | maximum | ≤ 9 SU | all year | X12 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | X12 |
| Oil and grease, hexane extr method | daily maximum | ≤ 15 mg/L | all year | X12 |
| Nitrogen, organic total [as N] | daily maximum | report only (mg/L) | all year | X12 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | X12 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | X12 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | X12 |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year | X12 |
| IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia | minimum | > 44.3 % | all year | X12 |
| IC25 Static Renewal 7 Day Chronic Pimephales | minimum | > 44.3 % | all year | X12 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | X16 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | X16 |
| pH | minimum | report only (SU) | all year | X16 |
| pH | maximum | report only (SU) | all year | X16 |
| Oxidants, total residual | monthly average | ≤ .011 mg/L | all year | X16 |
| Oxidants, total residual | daily maximum | ≤ .019 mg/L | all year | X16 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | X17 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | X17 |
| pH | minimum | report only (SU) | all year | X17 |
| pH | maximum | report only (SU) | all year | X17 |
| Oxidants, total residual | monthly average | ≤ .011 mg/L | all year | X17 |
| Oxidants, total residual | daily maximum | ≤ .019 mg/L | all year | X17 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | X18 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | X18 |
| pH | minimum | report only (SU) | all year | X18 |
| pH | maximum | report only (SU) | all year | X18 |
| Oxidants, total residual | monthly average | ≤ .011 mg/L | all year | X18 |
| Oxidants, total residual | daily maximum | ≤ .019 mg/L | all year | X18 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | X19 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | X19 |
| pH | minimum | report only (SU) | all year | X19 |
| pH | maximum | report only (SU) | all year | X19 |
| Oxidants, total residual | monthly average | ≤ .011 mg/L | all year | X19 |
| Oxidants, total residual | daily maximum | ≤ .019 mg/L | all year | X19 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | X20 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | X20 |
| pH | minimum | report only (SU) | all year | X20 |
| pH | maximum | report only (SU) | all year | X20 |
| Oxidants, total residual | monthly average | ≤ .011 mg/L | all year | X20 |
| Oxidants, total residual | daily maximum | ≤ .019 mg/L | all year | X20 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | X21 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | X21 |
| pH | minimum | report only (SU) | all year | X21 |
| pH | maximum | report only (SU) | all year | X21 |
| Oxidants, total residual | monthly average | ≤ .011 mg/L | all year | X21 |
| Oxidants, total residual | daily maximum | ≤ .019 mg/L | all year | X21 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | X22 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | X22 |
| pH | minimum | report only (SU) | all year | X22 |
| pH | maximum | report only (SU) | all year | X22 |
| Oxidants, total residual | monthly average | ≤ .011 mg/L | all year | X22 |
| Oxidants, total residual | daily maximum | ≤ .019 mg/L | all year | X22 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | X23 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | X23 |
| pH | minimum | report only (SU) | all year | X23 |
| pH | maximum | report only (SU) | all year | X23 |
| Oxidants, total residual | monthly average | ≤ .011 mg/L | all year | X23 |
| Oxidants, total residual | daily maximum | ≤ .019 mg/L | all year | X23 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | X24 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | X24 |
| pH | minimum | report only (SU) | all year | X24 |
| pH | maximum | report only (SU) | all year | X24 |
| Oxidants, total residual | monthly average | ≤ .011 mg/L | all year | X24 |
| Oxidants, total residual | daily maximum | ≤ .019 mg/L | all year | X24 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | X25 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | X25 |
| pH | minimum | report only (SU) | all year | X25 |
| pH | maximum | report only (SU) | all year | X25 |
| Oxidants, total residual | monthly average | ≤ .011 mg/L | all year | X25 |
| Oxidants, total residual | daily maximum | ≤ .019 mg/L | all year | X25 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | X26 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | X26 |
| pH | minimum | report only (SU) | all year | X26 |
| pH | maximum | report only (SU) | all year | X26 |
| Oxidants, total residual | monthly average | ≤ .011 mg/L | all year | X26 |
| Oxidants, total residual | daily maximum | ≤ .019 mg/L | all year | X26 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | X27 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | X27 |
| pH | minimum | report only (SU) | all year | X27 |
| pH | maximum | report only (SU) | all year | X27 |
| Oxidants, total residual | monthly average | ≤ .011 mg/L | all year | X27 |
| Oxidants, total residual | daily maximum | ≤ .019 mg/L | all year | X27 |
| Hydrogen peroxide | monthly average | ≤ .63 mg/L (alert, not enforceable) | all year | X28 |
| Hydrogen peroxide | daily maximum | report only (mg/L) (alert, not enforceable) | all year | X28 |
| Peracetic Acid | monthly average | ≤ .45 mg/L (alert, not enforceable) | all year | X28 |
| Peracetic Acid | daily maximum | report only (mg/L) (alert, not enforceable) | all year | X28 |
| Hydrogen peroxide | monthly average | ≤ .63 mg/L (alert, not enforceable) | all year | X29 |
| Hydrogen peroxide | daily maximum | report only (mg/L) (alert, not enforceable) | all year | X29 |
| Peracetic Acid | monthly average | ≤ .45 mg/L (alert, not enforceable) | all year | X29 |
| Peracetic Acid | daily maximum | report only (mg/L) (alert, not enforceable) | all year | X29 |
Cited limits by parameter: Tennessee's rules and the federal ones.
Same industry: the 3 National Security and International Affairs permits in Tennessee.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/TN0002941 · MCP: https://passage-data.com/mcp