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Sewage treatment plant, major discharger, Soldotna, Alaska. NPDES permit AK0020036 expired Jul 25, 2005; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 60 mg/L | all year |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 255.2 lb/d | all year |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 510.4 lb/d | all year |
| BOD, 5-day, 20 deg. C | daily minimum | report only (mg/L) | all year |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 382.8 lb/d | all year |
| pH | daily minimum | ≥ 6.5 SU | all year |
| pH | daily maximum | ≤ 8.5 SU | all year |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year |
| Solids, total suspended | monthly average | ≤ 255.2 lb/d | all year |
| Solids, total suspended | daily maximum | ≤ 510.4 lb/d | all year |
| Solids, total suspended | daily minimum | report only (mg/L) | all year |
| Solids, total suspended | monthly average | report only (mg/L) | all year |
| Solids, total suspended | daily maximum | report only (mg/L) | all year |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year |
| Solids, total suspended | weekly average | ≤ 382.8 lb/d | all year |
| Coliform, fecal - % samples exceeding limit | monthly maximum | ≤ 200 % | all year |
| Coliform, fecal MF, MFC broth, 44.5 C | monthly geometric mean | ≤ 100 #/100mL | all year |
| Coliform, fecal MF, MFC broth, 44.5 C | daily maximum | ≤ 200 #/100mL | all year |
| Flow, in conduit or thru treatment plant | monthly maximum | ≤ 1.02 MGD | all year |
| Chlorine, total residual | monthly maximum | ≤ .1 mg/L | all year |
| BOD, 5-day, percent removal | minimum % removal | ≥ 85 % | all year |
| Solids, suspended percent removal | minimum % removal | ≥ 85 % | all year |
| pH range excursions, > 60 minutes | daily maximum | report only (occur/mo) | all year |
| pH range excursions, monthly total accum | daily minimum | report only (min) | all year |
| pH range excursions, monthly total accum | daily maximum | report only (min) | all year |
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/AK0020036 · MCP: https://passage-data.com/mcp