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Bituminous Coal And Lignite - Surface, major discharger, Healy, Alaska. NPDES permit AK0040380 expired Nov 3, 2003; 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 | minimum | ≥ 6 SU | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 8.5 SU | all year | 001 |
| pH | maximum | ≤ 8.5 SU | all year | 001 |
| pH | maximum | ≤ 8.5 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 35 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 001 |
| Solids, settleable | daily maximum | ≤ .5 mL/L | all year | 001 |
| Iron, total recoverable | monthly average | ≤ 3 mg/L | all year | 001 |
| Iron, total recoverable | daily maximum | ≤ 6 mg/L | all year | 001 |
| Rainfall | daily maximum | report only (in) | all year | 001 |
| Rainfall | daily maximum | report only (in) | all year | 001 |
| Flow, maximum during 24 hr period | daily maximum | report only (gal/min) | all year | 001 |
| Flow, maximum during 24 hr period | daily maximum | report only (gal/min) | all year | 001 |
| Flow, maximum during 24 hr period | daily maximum | report only (gal/min) | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 002 |
| pH | minimum | ≥ 6 SU | all year | 002 |
| pH | minimum | ≥ 6 SU | all year | 002 |
| pH | maximum | ≤ 8.5 SU | all year | 002 |
| pH | maximum | ≤ 8.5 SU | all year | 002 |
| pH | maximum | ≤ 8.5 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 35 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 002 |
| Solids, settleable | daily maximum | ≤ .5 mL/L | all year | 002 |
| Iron, total recoverable | monthly average | ≤ 3 mg/L | all year | 002 |
| Iron, total recoverable | daily maximum | ≤ 6 mg/L | all year | 002 |
| Rainfall | daily maximum | report only (in) | all year | 002 |
| Rainfall | daily maximum | report only (in) | all year | 002 |
| Flow, maximum during 24 hr period | daily maximum | report only (gal/min) | all year | 002 |
| Flow, maximum during 24 hr period | daily maximum | report only (gal/min) | all year | 002 |
| Flow, maximum during 24 hr period | daily maximum | report only (gal/min) | all year | 002 |
| pH | minimum | ≥ 6 SU | all year | 003 |
| pH | minimum | ≥ 6 SU | all year | 003 |
| pH | minimum | ≥ 6 SU | all year | 003 |
| pH | maximum | ≤ 8.5 SU | all year | 003 |
| pH | maximum | ≤ 8.5 SU | all year | 003 |
| pH | maximum | ≤ 8.5 SU | all year | 003 |
| Solids, total suspended | monthly average | ≤ 35 mg/L | all year | 003 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 003 |
| Solids, settleable | daily maximum | ≤ .5 mL/L | all year | 003 |
| Iron, total recoverable | monthly average | ≤ 3 mg/L | all year | 003 |
| Iron, total recoverable | daily maximum | ≤ 6 mg/L | all year | 003 |
| Rainfall | daily maximum | report only (in) | all year | 003 |
| Rainfall | daily maximum | report only (in) | all year | 003 |
| Flow, maximum during 24 hr period | daily maximum | report only (gal/min) | all year | 003 |
| Flow, maximum during 24 hr period | daily maximum | report only (gal/min) | all year | 003 |
| Flow, maximum during 24 hr period | daily maximum | report only (gal/min) | all year | 003 |
| pH | minimum | ≥ 6 SU | all year | 004 |
| pH | minimum | ≥ 6 SU | all year | 004 |
| pH | minimum | ≥ 6 SU | all year | 004 |
| pH | maximum | ≤ 8.5 SU | all year | 004 |
| pH | maximum | ≤ 8.5 SU | all year | 004 |
| pH | maximum | ≤ 8.5 SU | all year | 004 |
| Solids, total suspended | monthly average | ≤ 35 mg/L | all year | 004 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 004 |
| Solids, settleable | daily maximum | ≤ .5 mL/L | all year | 004 |
| Iron, total recoverable | monthly average | ≤ 3 mg/L | all year | 004 |
| Iron, total recoverable | daily maximum | ≤ 6 mg/L | all year | 004 |
| Rainfall | daily maximum | report only (in) | all year | 004 |
| Rainfall | daily maximum | report only (in) | all year | 004 |
| Flow, maximum during 24 hr period | daily maximum | report only (gal/min) | all year | 004 |
| Flow, maximum during 24 hr period | daily maximum | report only (gal/min) | all year | 004 |
| Flow, maximum during 24 hr period | daily maximum | report only (gal/min) | all year | 004 |
| pH | minimum | ≥ 6 SU | all year | 005 |
| pH | minimum | ≥ 6 SU | all year | 005 |
| pH | minimum | ≥ 6 SU | all year | 005 |
| pH | maximum | ≤ 8.5 SU | all year | 005 |
| pH | maximum | ≤ 8.5 SU | all year | 005 |
| pH | maximum | ≤ 8.5 SU | all year | 005 |
| Solids, total suspended | monthly average | ≤ 35 mg/L | all year | 005 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 005 |
| Solids, settleable | daily maximum | ≤ .5 mL/L | all year | 005 |
| Iron, total recoverable | monthly average | ≤ 3 mg/L | all year | 005 |
| Iron, total recoverable | daily maximum | ≤ 6 mg/L | all year | 005 |
| Rainfall | daily maximum | report only (in) | all year | 005 |
| Rainfall | daily maximum | report only (in) | all year | 005 |
| Flow, maximum during 24 hr period | daily maximum | report only (gal/min) | all year | 005 |
| Flow, maximum during 24 hr period | daily maximum | report only (gal/min) | all year | 005 |
| Flow, maximum during 24 hr period | daily maximum | report only (gal/min) | all year | 005 |
| pH | minimum | ≥ 6 SU | all year | 006 |
| pH | minimum | ≥ 6 SU | all year | 006 |
| pH | minimum | ≥ 6 SU | all year | 006 |
| pH | maximum | ≤ 8.5 SU | all year | 006 |
| pH | maximum | ≤ 8.5 SU | all year | 006 |
| pH | maximum | ≤ 8.5 SU | all year | 006 |
| Solids, total suspended | monthly average | ≤ 35 mg/L | all year | 006 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 006 |
| Solids, settleable | daily maximum | ≤ .5 mL/L | all year | 006 |
| Iron, total recoverable | monthly average | ≤ 3 mg/L | all year | 006 |
| Iron, total recoverable | daily maximum | ≤ 6 mg/L | all year | 006 |
| Rainfall | daily maximum | report only (in) | all year | 006 |
| Rainfall | daily maximum | report only (in) | all year | 006 |
| Flow, maximum during 24 hr period | daily maximum | report only (gal/min) | all year | 006 |
| Flow, maximum during 24 hr period | daily maximum | report only (gal/min) | all year | 006 |
| Flow, maximum during 24 hr period | daily maximum | report only (gal/min) | all year | 006 |
| pH | minimum | ≥ 6 SU | all year | 007 |
| pH | minimum | ≥ 6 SU | all year | 007 |
| pH | minimum | ≥ 6 SU | all year | 007 |
| pH | maximum | ≤ 8.5 SU | all year | 007 |
| pH | maximum | ≤ 8.5 SU | all year | 007 |
| pH | maximum | ≤ 8.5 SU | all year | 007 |
| Solids, total suspended | monthly average | ≤ 35 mg/L | all year | 007 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 007 |
| Solids, settleable | daily maximum | ≤ .5 mL/L | all year | 007 |
| Iron, total recoverable | monthly average | ≤ 3 mg/L | all year | 007 |
| Iron, total recoverable | daily maximum | ≤ 6 mg/L | all year | 007 |
| Rainfall | daily maximum | report only (in) | all year | 007 |
| Rainfall | daily maximum | report only (in) | all year | 007 |
| Flow, maximum during 24 hr period | daily maximum | report only (gal/min) | all year | 007 |
| Flow, maximum during 24 hr period | daily maximum | report only (gal/min) | all year | 007 |
| Flow, maximum during 24 hr period | daily maximum | report only (gal/min) | all year | 007 |
| pH | minimum | ≥ 6 SU | all year | 008 |
| pH | minimum | ≥ 6 SU | all year | 008 |
| pH | minimum | ≥ 6 SU | all year | 008 |
| pH | maximum | ≤ 8.5 SU | all year | 008 |
| pH | maximum | ≤ 8.5 SU | all year | 008 |
| pH | maximum | ≤ 8.5 SU | all year | 008 |
| Solids, total suspended | monthly average | ≤ 35 mg/L | all year | 008 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 008 |
| Solids, settleable | daily maximum | ≤ .5 mL/L | all year | 008 |
| Iron, total recoverable | monthly average | ≤ 3 mg/L | all year | 008 |
| Iron, total recoverable | daily maximum | ≤ 6 mg/L | all year | 008 |
| Rainfall | daily maximum | report only (in) | all year | 008 |
| Rainfall | daily maximum | report only (in) | all year | 008 |
| Flow, maximum during 24 hr period | daily maximum | report only (gal/min) | all year | 008 |
| Flow, maximum during 24 hr period | daily maximum | report only (gal/min) | all year | 008 |
| Flow, maximum during 24 hr period | daily maximum | report only (gal/min) | all year | 008 |
Cited limits by parameter: Alaska'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/AK0040380 · MCP: https://passage-data.com/mcp