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Federal facility (Electric Services), major discharger, Memphis, Tennessee. NPDES permit TN0005355 expired Aug 3, 2010; its limits still apply. 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 | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 100 mg/L | all year | 001 |
| Oil & Grease | monthly average | ≤ 15 mg/L | all year | 001 |
| Oil & Grease | daily maximum | ≤ 20 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (lb/d) | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (lb/d) | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (lb/d) | all year | 001 |
| Cadmium, total [as Cd] | daily maximum | report only (mg/L) | all year | 001 |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | 001 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 001 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | 001 |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | 001 |
| Manganese, total [as Mn] | daily maximum | report only (mg/L) | all year | 001 |
| Silver, total [as Ag] | daily maximum | report only (mg/L) | all year | 001 |
| Selenium, total [as Se] | daily maximum | report only (mg/L) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Mercury, total [as Hg] | daily maximum | report only (mg/L) | all year | 001 |
| LC50 Static 48Hr Acute Ceriodaphnia dubia | minimum | ≥ 100 % | all year | 001 |
| LC50 Static 48Hr Acute Pimephales promelas | minimum | ≥ 100 % | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 100 mg/L | all year | 002 |
| Oil & Grease | monthly average | ≤ 15 mg/L | all year | 002 |
| Oil & Grease | daily maximum | ≤ 20 mg/L | all year | 002 |
| Cadmium, total [as Cd] | daily maximum | report only (mg/L) | all year | 002 |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | 002 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 002 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | 002 |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | 002 |
| Manganese, total [as Mn] | daily maximum | report only (mg/L) | all year | 002 |
| Silver, total [as Ag] | daily maximum | report only (mg/L) | all year | 002 |
| Selenium, total [as Se] | daily maximum | report only (mg/L) | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Mercury, total [as Hg] | daily maximum | report only (mg/L) | all year | 002 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | 003 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 003 |
| Temperature, water deg. centigrade | daily maximum | ≤ 44.4 deg C | all year | 003 |
| Oxidants, total residual | daily maximum | ≤ .2 mg/L | all year | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| Duration of discharge | daily maximum | ≤ 120 min/d | all year | 003 |
| pH | minimum | ≥ 6 SU | all year | 006 |
| pH | maximum | ≤ 9 SU | all year | 006 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 006 |
| Solids, total suspended | daily maximum | ≤ 100 mg/L | all year | 006 |
| Oil & Grease | monthly average | ≤ 15 mg/L | all year | 006 |
| Oil & Grease | daily maximum | ≤ 20 mg/L | all year | 006 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 006 |
| Copper, total [as Cu] | monthly average | ≤ 1 mg/L | all year | 006 |
| Copper, total [as Cu] | daily maximum | ≤ 1 mg/L | all year | 006 |
| Iron, total [as Fe] | monthly average | ≤ 1 mg/L | all year | 006 |
| Iron, total [as Fe] | daily maximum | ≤ 1 mg/L | all year | 006 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 006 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 006 |
| pH | minimum | ≥ 6 SU | all year | 01A |
| pH | maximum | ≤ 9 SU | all year | 01A |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 01A |
| Solids, total suspended | daily maximum | ≤ 100 mg/L | all year | 01A |
| Oil & Grease | monthly average | ≤ 15 mg/L | all year | 01A |
| Oil & Grease | daily maximum | ≤ 20 mg/L | all year | 01A |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 01A |
| Nitrogen, ammonia total [as N] | daily maximum | report only (lb/d) | all year | 01A |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 01A |
| Nitrogen, ammonia total [as N] | daily maximum | report only (lb/d) | all year | 01A |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 01A |
| Nitrogen, ammonia total [as N] | daily maximum | report only (lb/d) | all year | 01A |
| Cadmium, total [as Cd] | daily maximum | report only (mg/L) | all year | 01A |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | 01A |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 01A |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | 01A |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | 01A |
| Manganese, total [as Mn] | daily maximum | report only (mg/L) | all year | 01A |
| Silver, total [as Ag] | daily maximum | report only (mg/L) | all year | 01A |
| Selenium, total [as Se] | daily maximum | report only (mg/L) | all year | 01A |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 01A |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 01A |
| Mercury, total [as Hg] | daily maximum | report only (mg/L) | all year | 01A |
| LC50 Static 48Hr Acute Ceriodaphnia dubia | minimum | ≥ 100 % | all year | 01A |
| LC50 Static 48Hr Acute Pimephales promelas | minimum | ≥ 100 % | all year | 01A |
Cited limits by parameter: Tennessee's rules and the federal ones.
Same industry: the 15 Electric Services 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/TN0005355 · MCP: https://passage-data.com/mcp