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Crude Petroleum And Natural Gas, (Unknown City), Wyoming. NPDES permit WY0056529, in force until Sep 30, 2028. Last 12 months: no values over a limit, 36 of 65 reports late. 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 maximum | ≤ 9 SU | all year | 001 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 001 |
| Chloride | daily maximum | ≤ 2000 mg/L | all year | 001 |
| Solids, total dissolved | daily maximum | report only (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 |
| Specific conductance | daily maximum | ≤ 7500 umho/cm | all year | 002 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 002 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 002 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 002 |
| Chloride | daily maximum | ≤ 2000 mg/L | all year | 002 |
| Solids, total dissolved | daily maximum | report only (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 |
| Specific conductance | daily maximum | ≤ 7500 umho/cm | all year | 003 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 003 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 003 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 003 |
| Chloride | daily maximum | ≤ 2000 mg/L | all year | 003 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 003 |
| Flow | daily maximum | report only (MGD) | all year | 003 |
| Flow | daily maximum | report only (MGD) | all year | 003 |
| Flow | monthly average | report only (MGD) | all year | 003 |
| Flow | monthly average | report only (MGD) | all year | 003 |
| Specific conductance | daily maximum | ≤ 7500 umho/cm | all year | 004 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 004 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 004 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 004 |
| Chloride | daily maximum | ≤ 2000 mg/L | all year | 004 |
| Solids, total dissolved | daily maximum | report only (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 |
| Specific conductance | daily maximum | ≤ 7500 umho/cm | all year | 010 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 010 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 010 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 010 |
| Chloride | daily maximum | ≤ 2000 mg/L | all year | 010 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 010 |
| Flow | daily maximum | report only (MGD) | all year | 010 |
| Flow | daily maximum | report only (MGD) | all year | 010 |
| Flow | monthly average | report only (MGD) | all year | 010 |
| Flow | monthly average | report only (MGD) | all year | 010 |
| Specific conductance | daily maximum | ≤ 7500 umho/cm | all year | 011 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 011 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 011 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 011 |
| Chloride | daily maximum | ≤ 2000 mg/L | all year | 011 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 011 |
| Flow | daily maximum | report only (MGD) | all year | 011 |
| Flow | daily maximum | report only (MGD) | all year | 011 |
| Flow | monthly average | report only (MGD) | all year | 011 |
| Flow | monthly average | report only (MGD) | all year | 011 |
| Specific conductance | daily maximum | report only (umho/cm) | all year | CU1 |
| pH | instantaneous minimum | report only (SU) | all year | CU1 |
| pH | instantaneous maximum | report only (SU) | all year | CU1 |
| Fluoride, dissolved [as F] | daily maximum | report only (ug/L) | all year | CU1 |
| Selenium, total [as Se] | daily maximum | report only (ug/L) | all year | CU1 |
| Chloride | daily maximum | report only (mg/L) | all year | CU1 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | CU1 |
| Sulfate | daily maximum | report only (mg/L) | all year | CU1 |
| Specific conductance | daily maximum | report only (umho/cm) | all year | CU10 |
| pH | instantaneous minimum | report only (SU) | all year | CU10 |
| pH | instantaneous maximum | report only (SU) | all year | CU10 |
| Fluoride, dissolved [as F] | daily maximum | report only (ug/L) | all year | CU10 |
| Selenium, total [as Se] | daily maximum | report only (ug/L) | all year | CU10 |
| Chloride | daily maximum | report only (mg/L) | all year | CU10 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | CU10 |
| Sulfate | daily maximum | report only (mg/L) | all year | CU10 |
| Specific conductance | daily maximum | report only (umho/cm) | all year | CU2 |
| pH | instantaneous minimum | report only (SU) | all year | CU2 |
| pH | instantaneous maximum | report only (SU) | all year | CU2 |
| Fluoride, dissolved [as F] | daily maximum | report only (ug/L) | all year | CU2 |
| Selenium, total [as Se] | daily maximum | report only (ug/L) | all year | CU2 |
| Chloride | daily maximum | report only (mg/L) | all year | CU2 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | CU2 |
| Sulfate | daily maximum | report only (mg/L) | all year | CU2 |
| Specific conductance | daily maximum | report only (umho/cm) | all year | CU3 |
| pH | instantaneous minimum | report only (SU) | all year | CU3 |
| pH | instantaneous maximum | report only (SU) | all year | CU3 |
| Fluoride, dissolved [as F] | daily maximum | report only (ug/L) | all year | CU3 |
| Selenium, total [as Se] | daily maximum | report only (ug/L) | all year | CU3 |
| Chloride | daily maximum | report only (mg/L) | all year | CU3 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | CU3 |
| Sulfate | daily maximum | report only (mg/L) | all year | CU3 |
| Specific conductance | daily maximum | report only (umho/cm) | all year | CU4 |
| pH | instantaneous minimum | report only (SU) | all year | CU4 |
| pH | instantaneous maximum | report only (SU) | all year | CU4 |
| Fluoride, dissolved [as F] | daily maximum | report only (ug/L) | all year | CU4 |
| Selenium, total [as Se] | daily maximum | report only (ug/L) | all year | CU4 |
| Chloride | daily maximum | report only (mg/L) | all year | CU4 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | CU4 |
| Sulfate | daily maximum | report only (mg/L) | all year | CU4 |
Cited limits by parameter: Wyoming's rules and the federal ones.
Same industry: the 209 Oil and Gas Extraction permits in Wyoming.
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Your permit document is the final word. As JSON: /api/v1/permits/WY0056529 · MCP: https://passage-data.com/mcp