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Crude Petroleum And Natural Gas, Tyonek, Alaska. NPDES permit AK0055883 expired Jul 7, 2024; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Floating solids, waste or visible foam-visual | value | ≤ 0 abst=0;prst=1 | all year | 004 |
| Chlorine, total residual | maximum | ≤ 1 mg/L | all year | 004 |
| Volume | monthly total | report only (Mgal/mo) | all year | 004 |
| Oil and grease visual | value | ≤ 0 abst=0;prst=1 | all year | 004 |
| Flow | monthly average | report only (MGD) | all year | 009 |
| Flow | daily maximum | report only (MGD) | all year | 009 |
| Toxicity, Chronic | maximum | report only (tox chronic) | all year | 009 |
| Flow | monthly average | report only (MGD) | all year | 010 |
| Flow | daily maximum | report only (MGD) | all year | 010 |
| Oil and grease visual | maximum | ≤ 0 abst=0;prst=1 | all year | 010 |
Cited limits by parameter: Alaska's rules and the federal ones.
Same industry: the 11 Oil and Gas Extraction permits in Alaska.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/AK0055883 · MCP: https://passage-data.com/mcp