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National Security, N/A, Alaska. NPDES permit AK0053783, in force until Dec 31, 2026. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | instantaneous maximum | report only (mg/L) | all year | 001 |
| pH | instantaneous minimum | report only (SU) | all year | 001 |
| pH | instantaneous maximum | report only (SU) | all year | 001 |
| Solids, total suspended | instantaneous maximum | report only (mg/L) | all year | 001 |
| Oil and grease | monthly average | report only (mg/L) | all year | 001 |
| Oil and grease | daily maximum | report only (mg/L) | all year | 001 |
| Floating solids, waste or visible foam-visual | monthly maximum | ≤ 0 N=0;Y=1 | all year | 001 |
| Flow, in conduit or thru treatment plant | maximum weekly average | report only (gal/d) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (gal/d) | all year | 001 |
| Oil and grease visual | monthly maximum | report only (N=0;Y=1) | all year | 001 |
| pH | instantaneous minimum | report only (SU) | all year | 002 |
| pH | instantaneous maximum | report only (SU) | all year | 002 |
| Flow, in conduit or thru treatment plant | maximum weekly average | report only (gal/d) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (gal/d) | all year | 002 |
Cited limits by parameter: Alaska's rules and the federal ones.
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Your permit document is the final word. As JSON: /api/v1/permits/AK0053783 · MCP: https://passage-data.com/mcp