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Primary Aluminum, Alcoa, Tennessee. NPDES permit TN0082007, in force until Dec 31, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| LC50 Static 48Hr Acute Ceriodaphnia dubia | minimum | report only (%) | all year | S01 |
| LC50 Static 48Hr Acute Pimephales promelas | minimum | report only (%) | all year | S01 |
| LC50 Static 48Hr Acute Ceriodaphnia dubia | minimum | report only (%) | all year | S02 |
| LC50 Static 48Hr Acute Pimephales promelas | minimum | report only (%) | all year | S02 |
| LC50 Static 48Hr Acute Ceriodaphnia dubia | minimum | report only (%) | all year | S04 |
| LC50 Static 48Hr Acute Pimephales promelas | minimum | report only (%) | all year | S04 |
| pH | maximum | report only (SU) | all year | S06 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | S06 |
| Oil and grease, hexane extr method | daily maximum | report only (mg/L) | all year | S06 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | S06 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | S06 |
| Cyanide, total [as CN] | daily maximum | report only (mg/L) | all year | S06 |
| Magnesium, total [as Mg] | daily maximum | report only (mg/L) | all year | S06 |
| Fluoride, dissolved [as F] | daily maximum | report only (mg/L) | all year | S06 |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | S06 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | S06 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | S06 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | S06 |
| Chlorine, total residual | daily maximum | report only (mg/L) | all year | S06 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | all year | S06 |
| LC50 Static 48Hr Acute Ceriodaphnia dubia | minimum | report only (%) | all year | S06 |
| LC50 Static 48Hr Acute Pimephales promelas | minimum | report only (%) | all year | S06 |
| pH | maximum | report only (SU) | all year | SW5 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | SW5 |
| Oil and grease, hexane extr method | maximum | report only (mg/L) | all year | SW5 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | SW5 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | SW5 |
| Cyanide, total [as CN] | daily maximum | report only (mg/L) | all year | SW5 |
| Magnesium, total [as Mg] | daily maximum | report only (mg/L) | all year | SW5 |
| Fluoride, dissolved [as F] | daily maximum | report only (mg/L) | all year | SW5 |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | SW5 |
| Zinc, total [as Zn] | 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 |
| Chlorine, total residual | daily maximum | report only (mg/L) | all year | SW5 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | all year | SW5 |
| LC50 Static 48Hr Acute Ceriodaphnia dubia | minimum | report only (%) | all year | SW5 |
| LC50 Static 48Hr Acute Pimephales promelas | minimum | report only (%) | 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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Your permit document is the final word. As JSON: /api/v1/permits/TN0082007 · MCP: https://passage-data.com/mcp