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Petroleum Refining, (Unknown City), Wyoming. NPDES permit WY0000451, in force until Aug 31, 2028. Last 12 months: no values over a limit, 144 required values missing, 24 of 36 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | daily minimum | ≥ 6 SU | all year | 001 |
| pH | daily minimum | ≥ 6 SU | all year | 001 |
| pH | daily maximum | ≤ 9.5 SU | all year | 001 |
| pH | daily maximum | ≤ 9.5 SU | all year | 001 |
| Benzene | daily maximum | ≤ 5 ug/L (alert, not enforceable) | all year | 001 |
| Benzene | daily maximum | ≤ 5 ug/L (alert, not enforceable) | all year | 001 |
| Flow | monthly average | report only (MGD) | all year | 001 |
| Flow | monthly average | report only (MGD) | all year | 001 |
| Flow | daily maximum | report only (MGD) | all year | 001 |
| Flow | daily maximum | report only (MGD) | all year | 001 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 10 mg/L | all year | 001 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 10 mg/L | all year | 001 |
| pH | daily minimum | ≥ 6 SU | all year | 002 |
| pH | daily minimum | ≥ 6 SU | all year | 002 |
| pH | daily maximum | ≤ 9.5 SU | all year | 002 |
| pH | daily maximum | ≤ 9.5 SU | all year | 002 |
| Benzene | daily maximum | ≤ 5 ug/L (alert, not enforceable) | all year | 002 |
| Benzene | daily maximum | ≤ 5 ug/L (alert, not enforceable) | all year | 002 |
| Flow | monthly average | report only (MGD) | all year | 002 |
| Flow | monthly average | report only (MGD) | all year | 002 |
| Flow | daily maximum | report only (MGD) | all year | 002 |
| Flow | daily maximum | report only (MGD) | all year | 002 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 10 mg/L | all year | 002 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 10 mg/L | all year | 002 |
| pH | daily minimum | ≥ 6 SU | all year | 003 |
| pH | daily minimum | ≥ 6 SU | all year | 003 |
| pH | daily maximum | ≤ 9.5 SU | all year | 003 |
| pH | daily maximum | ≤ 9.5 SU | all year | 003 |
| Benzene | daily maximum | ≤ 5 ug/L (alert, not enforceable) | all year | 003 |
| Benzene | daily maximum | ≤ 5 ug/L (alert, not enforceable) | all year | 003 |
| Flow | monthly average | report only (MGD) | all year | 003 |
| Flow | monthly average | report only (MGD) | all year | 003 |
| Flow | daily maximum | report only (MGD) | all year | 003 |
| Flow | daily maximum | report only (MGD) | all year | 003 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 10 mg/L | all year | 003 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 10 mg/L | all year | 003 |
| pH | daily minimum | ≥ 6 SU | all year | 004 |
| pH | daily minimum | ≥ 6 SU | all year | 004 |
| pH | daily maximum | ≤ 9.5 SU | all year | 004 |
| pH | daily maximum | ≤ 9.5 SU | all year | 004 |
| Benzene | daily maximum | ≤ 5 ug/L (alert, not enforceable) | all year | 004 |
| Benzene | daily maximum | ≤ 5 ug/L (alert, not enforceable) | all year | 004 |
| Flow | monthly average | report only (MGD) | all year | 004 |
| Flow | monthly average | report only (MGD) | all year | 004 |
| Flow | daily maximum | report only (MGD) | all year | 004 |
| Flow | daily maximum | report only (MGD) | all year | 004 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 10 mg/L | all year | 004 |
| Hydrocarbons, total petroleum | daily maximum | ≤ 10 mg/L | all year | 004 |
Cited limits by parameter: Wyoming's rules and the federal ones.
Same industry: the 4 Petroleum Refining and Related Industries permits in Wyoming.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/WY0000451 · MCP: https://passage-data.com/mcp