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Secondary Nonferrous Metals, Mount Pleasant, Tennessee. NPDES permit TN0078573 expired Jul 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 |
|---|---|---|---|---|
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | SCD |
| Conductivity | daily maximum | report only (umho/cm) | all year | SCD |
| pH | value | report only (SU) | all year | SCD |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | SCD |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | SCD |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | SCD |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | SCD |
| Cyanide, total [as CN] | daily maximum | report only (mg/L) | all year | SCD |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | SCD |
| Chloride [as Cl] | daily maximum | report only (mg/L) | all year | SCD |
| Cadmium, total [as Cd] | daily maximum | report only (mg/L) | all year | SCD |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | SCD |
| Silver, total [as Ag] | daily maximum | report only (mg/L) | all year | SCD |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | SCD |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | SCD |
| Mercury, total [as Hg] | daily maximum | report only (mg/L) | all year | SCD |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | SCU |
| Conductivity | daily maximum | report only (umho/cm) | all year | SCU |
| pH | value | report only (SU) | all year | SCU |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | SCU |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | SCU |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | SCU |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | SCU |
| Cyanide, total [as CN] | daily maximum | report only (mg/L) | all year | SCU |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | SCU |
| Chloride [as Cl] | daily maximum | report only (mg/L) | all year | SCU |
| Cadmium, total [as Cd] | daily maximum | report only (mg/L) | all year | SCU |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | SCU |
| Silver, total [as Ag] | daily maximum | report only (mg/L) | all year | SCU |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | SCU |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | SCU |
| Mercury, total [as Hg] | daily maximum | report only (mg/L) | all year | SCU |
| Nitrogen, total [as N] | daily maximum | ≤ 129 lb/d | all year | SUR1 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 144 lb/d | all year | SUR1 |
| Phosphorus, total [as P] | daily maximum | ≤ 10 lb/d | all year | SUR1 |
| Chloride [as Cl] | daily maximum | ≤ 14542 lb/d | all year | SUR1 |
| Solids, total dissolved | daily maximum | ≤ 27964 lb/d | all year | SUR1 |
| Turbidity | daily maximum | report only (NTU) | all year | SW1 |
| Color, apparent [unfiltered sample] | daily maximum | report only (col unit (pc)) | all year | SW1 |
| Conductivity | daily maximum | report only (umho/cm) | Mar, Jun, Sep, Dec | SW1 |
| pH | minimum | report only (SU) | all year | SW1 |
| pH | maximum | ≤ 9 SU (alert, not enforceable) | all year | SW1 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | SW1 |
| Solids, settleable | daily maximum | report only (mL/L) | all year | SW1 |
| Oil and grease, hexane extr method | daily maximum | report only (mg/L) | all year | SW1 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | SW1 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 11.84 mg/L (alert, not enforceable) | all year | SW1 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.17 mg/L (alert, not enforceable) | all year | SW1 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | SW1 |
| Cyanide, total [as CN] | daily maximum | report only (mg/L) | all year | SW1 |
| Chloride [as Cl] | monthly average | ≤ 230 mg/L (alert, not enforceable) | all year | SW1 |
| Chloride [as Cl] | daily maximum | ≤ 860 mg/L (alert, not enforceable) | all year | SW1 |
| Cadmium, total [as Cd] | daily maximum | report only (mg/L) | all year | SW1 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | SW1 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | SW1 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | Mar, Jun, Sep, Dec | SW1 |
| Solids, total dissolved | daily maximum | ≤ 500 mg/L (alert, not enforceable) | all year | SW1 |
| Mercury, total [as Hg] | daily maximum | report only (mg/L) | all year | SW1 |
| LC50 Static 48Hr Acute Ceriodaphnia dubia | minimum | report only (%) | all year | SW1 |
| LC50 Static 48Hr Acute Pimephales promelas | minimum | report only (%) | all year | SW1 |
| Conductivity | daily maximum | report only (umho/cm) | Dec | SW2 |
| pH | minimum | report only (SU) | all year | SW2 |
| pH | maximum | ≤ 9 SU (alert, not enforceable) | all year | SW2 |
| Solids, total suspended | daily maximum | report only (mg/L) | Dec | SW2 |
| Solids, settleable | daily maximum | report only (mL/L) | Dec | SW2 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | SW2 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | SW2 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | SW2 |
| Chloride [as Cl] | daily maximum | report only (mg/L) | all year | SW2 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | SW2 |
| Silver, total [as Ag] | daily maximum | report only (mg/L) | all year | SW2 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | SW2 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | Dec | SW2 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | SW2 |
| Conductivity | daily maximum | report only (umho/cm) | all year | SW3 |
| pH | minimum | report only (SU) | all year | SW3 |
| pH | maximum | ≤ 9 SU (alert, not enforceable) | all year | SW3 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | SW3 |
| Solids, settleable | daily maximum | report only (mL/L) | Dec | SW3 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | SW3 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.17 mg/L (alert, not enforceable) | all year | SW3 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 11.84 mg/L (alert, not enforceable) | all year | SW3 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | SW3 |
| Chloride [as Cl] | monthly average | ≤ 230 mg/L (alert, not enforceable) | all year | SW3 |
| Chloride [as Cl] | daily maximum | ≤ 860 mg/L (alert, not enforceable) | all year | SW3 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | SW3 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | SW3 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | SW3 |
| Solids, total dissolved | daily maximum | ≤ 500 mg/L (alert, not enforceable) | all year | SW3 |
| Conductivity | daily maximum | report only (umho/cm) | Dec | SW4 |
| pH | minimum | report only (SU) | all year | SW4 |
| pH | maximum | ≤ 9 SU (alert, not enforceable) | all year | SW4 |
| Solids, total suspended | daily maximum | report only (mg/L) | Dec | SW4 |
| Solids, settleable | daily maximum | report only (mL/L) | Dec | SW4 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | SW4 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Dec | SW4 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | SW4 |
| Chloride [as Cl] | daily maximum | report only (mg/L) | all year | SW4 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | SW4 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | SW4 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | SW4 |
| Solids, total dissolved | daily maximum | ≤ 500 mg/L (alert, not enforceable) | all year | SW4 |
| Conductivity | daily maximum | report only (umho/cm) | all year | SW5 |
| pH | maximum | ≤ 9 SU (alert, not enforceable) | all year | SW5 |
| pH | minimum | report only (SU) | all year | SW5 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | SW5 |
| Solids, settleable | daily maximum | report only (mL/L) | all year | SW5 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | SW5 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | SW5 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | SW5 |
| Chloride [as Cl] | daily maximum | report only (mg/L) | all year | SW5 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | SW5 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | SW5 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | SW5 |
| Solids, total dissolved | daily maximum | ≤ 500 mg/L (alert, not enforceable) | all year | SW5 |
Cited limits by parameter: Tennessee's rules and the federal ones.
Same industry: the 12 Primary Metal Industries 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/TN0078573 · MCP: https://passage-data.com/mcp