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Industrial or other facility, (Unknown City), Wyoming. NPDES permit WY0096091, in force until Dec 31, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Specific conductance | daily maximum | ≤ 7500 umho/cm | all year | 001 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 001 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 001 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 001 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 001 |
| Sulfide, total [as S] | daily maximum | report only (mg/L) | all year | 001 |
| Sulfide, total [as S] | daily maximum | report only (mg/L) | all year | 001 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 001 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 001 |
| Selenium, total [as Se] | daily maximum | ≤ 5 ug/L | all year | 001 |
| Selenium, total [as Se] | daily maximum | ≤ 5 ug/L | all year | 001 |
| Radium 226, total | daily maximum | ≤ 60 pCi/L | all year | 001 |
| Chloride | daily maximum | ≤ 2000 mg/L | all year | 001 |
| Flow | daily maximum | report only (MGD) | all year | 001 |
| Flow | daily maximum | report only (MGD) | all year | 001 |
| Flow | monthly average | report only (MGD) | all year | 001 |
| Flow | monthly average | report only (MGD) | all year | 001 |
| Sulfate | daily maximum | ≤ 3000 mg/L | all year | 001 |
| Produced water, oil and grease | daily maximum | ≤ 10 mg/L | all year | 001 |
| Produced water, oil and grease | daily maximum | ≤ 10 mg/L | all year | 001 |
| Specific conductance | daily maximum | ≤ 7500 umho/cm | all year | 002 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 002 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 002 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 002 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 002 |
| Sulfide, total [as S] | daily maximum | report only (mg/L) | all year | 002 |
| Sulfide, total [as S] | daily maximum | report only (mg/L) | all year | 002 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 002 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 002 |
| Selenium, total [as Se] | daily maximum | ≤ 5 ug/L | all year | 002 |
| Selenium, total [as Se] | daily maximum | ≤ 5 ug/L | all year | 002 |
| Radium 226, total | daily maximum | ≤ 60 pCi/L | all year | 002 |
| Chloride | daily maximum | ≤ 2000 mg/L | all year | 002 |
| Flow | daily maximum | report only (MGD) | all year | 002 |
| Flow | daily maximum | report only (MGD) | all year | 002 |
| Flow | monthly average | report only (MGD) | all year | 002 |
| Flow | monthly average | report only (MGD) | all year | 002 |
| Sulfate | daily maximum | ≤ 3000 mg/L | all year | 002 |
| Produced water, oil and grease | daily maximum | ≤ 10 mg/L | all year | 002 |
| Produced water, oil and grease | daily maximum | ≤ 10 mg/L | all year | 002 |
| Specific conductance | daily maximum | ≤ 7500 umho/cm | all year | 003 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 003 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 003 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 003 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 003 |
| Sulfide, total [as S] | daily maximum | report only (mg/L) | all year | 003 |
| Sulfide, total [as S] | daily maximum | report only (mg/L) | all year | 003 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 003 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 003 |
| Selenium, total [as Se] | daily maximum | ≤ 5 ug/L | all year | 003 |
| Selenium, total [as Se] | daily maximum | ≤ 5 ug/L | all year | 003 |
| Radium 226, total | daily maximum | ≤ 60 pCi/L | all year | 003 |
| Chloride | daily maximum | ≤ 2000 mg/L | all year | 003 |
| Flow, process wastewater | daily maximum | report only (MGD) | all year | 003 |
| Flow, process wastewater | daily maximum | report only (MGD) | all year | 003 |
| Flow, process wastewater | monthly average | report only (MGD) | all year | 003 |
| Flow, process wastewater | monthly average | report only (MGD) | all year | 003 |
| Flow, well water | daily maximum | report only (MGD) | all year | 003 |
| Flow, well water | daily maximum | report only (MGD) | all year | 003 |
| Flow, well water | monthly average | report only (MGD) | all year | 003 |
| Flow, well water | monthly average | report only (MGD) | all year | 003 |
| Sulfate | daily maximum | ≤ 3000 mg/L | all year | 003 |
| Flow, total | daily maximum | report only (MGD) | all year | 003 |
| Flow, total | daily maximum | report only (MGD) | all year | 003 |
| Produced water, oil and grease | daily maximum | ≤ 10 mg/L | all year | 003 |
| Produced water, oil and grease | daily maximum | ≤ 10 mg/L | all year | 003 |
| Specific conductance | daily maximum | ≤ 7500 umho/cm | all year | 004 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 004 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 004 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 004 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 004 |
| Sulfide, total [as S] | daily maximum | report only (mg/L) | all year | 004 |
| Sulfide, total [as S] | daily maximum | report only (mg/L) | all year | 004 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 004 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 004 |
| Selenium, total [as Se] | daily maximum | ≤ 5 ug/L | all year | 004 |
| Selenium, total [as Se] | daily maximum | ≤ 5 ug/L | all year | 004 |
| Radium 226, total | daily maximum | ≤ 60 pCi/L | all year | 004 |
| Chloride | daily maximum | ≤ 2000 mg/L | all year | 004 |
| Flow | daily maximum | report only (MGD) | all year | 004 |
| Flow | daily maximum | report only (MGD) | all year | 004 |
| Flow | monthly average | report only (MGD) | all year | 004 |
| Flow | monthly average | report only (MGD) | all year | 004 |
| Sulfate | daily maximum | ≤ 3000 mg/L | all year | 004 |
| Produced water, oil and grease | daily maximum | ≤ 10 mg/L | all year | 004 |
| Produced water, oil and grease | daily maximum | ≤ 10 mg/L | all year | 004 |
| Specific conductance | daily maximum | ≤ 7500 umho/cm | all year | 005 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 005 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 005 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 005 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 005 |
| Sulfide, total [as S] | daily maximum | report only (mg/L) | all year | 005 |
| Sulfide, total [as S] | daily maximum | report only (mg/L) | all year | 005 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 005 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 005 |
| Selenium, total [as Se] | daily maximum | ≤ 5 ug/L | all year | 005 |
| Selenium, total [as Se] | daily maximum | ≤ 5 ug/L | all year | 005 |
| Radium 226, total | daily maximum | ≤ 60 pCi/L | all year | 005 |
| Chloride | daily maximum | ≤ 2000 mg/L | all year | 005 |
| Flow | daily maximum | report only (MGD) | all year | 005 |
| Flow | daily maximum | report only (MGD) | all year | 005 |
| Flow | monthly average | report only (MGD) | all year | 005 |
| Flow | monthly average | report only (MGD) | all year | 005 |
| Sulfate | daily maximum | ≤ 3000 mg/L | all year | 005 |
| Produced water, oil and grease | daily maximum | ≤ 10 mg/L | all year | 005 |
| Produced water, oil and grease | daily maximum | ≤ 10 mg/L | all year | 005 |
| Specific conductance | daily maximum | ≤ 7500 umho/cm | all year | 006 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 006 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 006 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 006 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 006 |
| Sulfide, total [as S] | daily maximum | report only (mg/L) | all year | 006 |
| Sulfide, total [as S] | daily maximum | report only (mg/L) | all year | 006 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 006 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 006 |
| Selenium, total [as Se] | daily maximum | ≤ 5 ug/L | all year | 006 |
| Selenium, total [as Se] | daily maximum | ≤ 5 ug/L | all year | 006 |
| Radium 226, total | daily maximum | ≤ 60 pCi/L | all year | 006 |
| Chloride | daily maximum | ≤ 2000 mg/L | all year | 006 |
| Flow | daily maximum | report only (MGD) | all year | 006 |
| Flow | daily maximum | report only (MGD) | all year | 006 |
| Flow | monthly average | report only (MGD) | all year | 006 |
| Flow | monthly average | report only (MGD) | all year | 006 |
| Sulfate | daily maximum | ≤ 3000 mg/L | all year | 006 |
| Produced water, oil and grease | daily maximum | ≤ 10 mg/L | all year | 006 |
| Produced water, oil and grease | daily maximum | ≤ 10 mg/L | all year | 006 |
| Specific conductance | daily maximum | ≤ 7500 umho/cm | all year | 007 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 007 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 007 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 007 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 007 |
| Sulfide, total [as S] | daily maximum | report only (mg/L) | all year | 007 |
| Sulfide, total [as S] | daily maximum | report only (mg/L) | all year | 007 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 007 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 007 |
| Selenium, total [as Se] | daily maximum | ≤ 5 ug/L | all year | 007 |
| Selenium, total [as Se] | daily maximum | ≤ 5 ug/L | all year | 007 |
| Radium 226, total | daily maximum | ≤ 60 pCi/L | all year | 007 |
| Chloride | daily maximum | ≤ 2000 mg/L | all year | 007 |
| Flow | daily maximum | report only (MGD) | all year | 007 |
| Flow | daily maximum | report only (MGD) | all year | 007 |
| Flow | monthly average | report only (MGD) | all year | 007 |
| Flow | monthly average | report only (MGD) | all year | 007 |
| Sulfate | daily maximum | ≤ 3000 mg/L | all year | 007 |
| Produced water, oil and grease | daily maximum | ≤ 10 mg/L | all year | 007 |
| Produced water, oil and grease | daily maximum | ≤ 10 mg/L | all year | 007 |
| Specific conductance | daily maximum | ≤ 7500 umho/cm | all year | 008 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 008 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 008 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 008 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 008 |
| Sulfide, total [as S] | daily maximum | report only (mg/L) | all year | 008 |
| Sulfide, total [as S] | daily maximum | report only (mg/L) | all year | 008 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 008 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 008 |
| Selenium, total [as Se] | daily maximum | ≤ 5 ug/L | all year | 008 |
| Selenium, total [as Se] | daily maximum | ≤ 5 ug/L | all year | 008 |
| Radium 226, total | daily maximum | ≤ 60 pCi/L | all year | 008 |
| Chloride | daily maximum | ≤ 2000 mg/L | all year | 008 |
| Flow | daily maximum | report only (MGD) | all year | 008 |
| Flow | daily maximum | report only (MGD) | all year | 008 |
| Flow | monthly average | report only (MGD) | all year | 008 |
| Flow | monthly average | report only (MGD) | all year | 008 |
| Sulfate | daily maximum | ≤ 3000 mg/L | all year | 008 |
| Produced water, oil and grease | daily maximum | ≤ 10 mg/L | all year | 008 |
| Produced water, oil and grease | daily maximum | ≤ 10 mg/L | all year | 008 |
| Specific conductance | daily maximum | ≤ 7500 umho/cm | all year | 009 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 009 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 009 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 009 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 009 |
| Sulfide, total [as S] | daily maximum | report only (mg/L) | all year | 009 |
| Sulfide, total [as S] | daily maximum | report only (mg/L) | all year | 009 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 009 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 009 |
| Selenium, total [as Se] | daily maximum | ≤ 5 ug/L | all year | 009 |
| Selenium, total [as Se] | daily maximum | ≤ 5 ug/L | all year | 009 |
| Radium 226, total | daily maximum | ≤ 60 pCi/L | all year | 009 |
| Chloride | daily maximum | ≤ 2000 mg/L | all year | 009 |
| Flow | daily maximum | report only (MGD) | all year | 009 |
| Flow | daily maximum | report only (MGD) | all year | 009 |
| Flow | monthly average | report only (MGD) | all year | 009 |
| Flow | monthly average | report only (MGD) | all year | 009 |
| Sulfate | daily maximum | ≤ 3000 mg/L | all year | 009 |
| Produced water, oil and grease | daily maximum | ≤ 10 mg/L | all year | 009 |
| Produced water, oil and grease | daily maximum | ≤ 10 mg/L | all year | 009 |
| pH | instantaneous maximum | report only (SU) | all year | DMP1 |
| pH | instantaneous maximum | report only (SU) | all year | DMP1 |
| pH | instantaneous minimum | report only (SU) | all year | DMP1 |
| pH | instantaneous minimum | report only (SU) | all year | DMP1 |
| Sulfide, total [as S] | daily maximum | report only (mg/L) | all year | DMP1 |
| Sulfide, total [as S] | daily maximum | report only (mg/L) | all year | DMP1 |
| pH | instantaneous maximum | report only (SU) | all year | DMP2 |
| pH | instantaneous maximum | report only (SU) | all year | DMP2 |
| pH | instantaneous minimum | report only (SU) | all year | DMP2 |
| pH | instantaneous minimum | report only (SU) | all year | DMP2 |
| Sulfide, total [as S] | daily maximum | report only (mg/L) | all year | DMP2 |
| Sulfide, total [as S] | daily maximum | report only (mg/L) | all year | DMP2 |
| pH | instantaneous maximum | report only (SU) | all year | DMP3 |
| pH | instantaneous maximum | report only (SU) | all year | DMP3 |
| pH | instantaneous minimum | report only (SU) | all year | DMP3 |
| pH | instantaneous minimum | report only (SU) | all year | DMP3 |
| Sulfide, total [as S] | daily maximum | report only (mg/L) | all year | DMP3 |
| Sulfide, total [as S] | daily maximum | report only (mg/L) | all year | DMP3 |
Cited limits by parameter: Wyoming'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/WY0096091 · MCP: https://passage-data.com/mcp