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Crude Petroleum And Natural Gas, (Unknown City), Wyoming. NPDES permit WY0052426, in force until Aug 31, 2030. 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 | 004 |
| 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 |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 004 |
| Calcium, dissolved [as Ca] | daily maximum | report only (mg/L) | all year | 004 |
| Calcium, dissolved [as Ca] | daily maximum | report only (mg/L) | all year | 004 |
| Magnesium, dissolved [as Mg] | daily maximum | report only (mg/L) | all year | 004 |
| Magnesium, dissolved [as Mg] | daily maximum | report only (mg/L) | all year | 004 |
| Sodium, dissolved [as Na] | daily maximum | report only (mg/L) | all year | 004 |
| Sodium, dissolved [as Na] | daily maximum | report only (mg/L) | all year | 004 |
| Sodium adsorption ratio | daily maximum | report only (Ratio) | all year | 004 |
| Sodium adsorption ratio | daily maximum | report only (Ratio) | all year | 004 |
| Arsenic, total recoverable | daily maximum | ≤ 8.4 ug/L | all year | 004 |
| Barium, total [as Ba] | daily maximum | ≤ 1800 ug/L | all year | 004 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 004 |
| Chloride | daily maximum | ≤ 150 mg/L | all year | 004 |
| Duration | monthly total | report only (d/mo) | all year | 004 |
| Duration | monthly total | report only (d/mo) | all year | 004 |
| Bicarbonate as [CaCO3] | daily maximum | report only (mg/L) | all year | 004 |
| Solids, total dissolved | daily maximum | report only (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 |
| Specific conductance | daily maximum | ≤ 7500 umho/cm | all year | 005 |
| Specific conductance | daily maximum | ≤ 7500 umho/cm | all year | 005 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 005 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 005 |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 005 |
| Calcium, dissolved [as Ca] | daily maximum | report only (mg/L) | all year | 005 |
| Calcium, dissolved [as Ca] | daily maximum | report only (mg/L) | all year | 005 |
| Magnesium, dissolved [as Mg] | daily maximum | report only (mg/L) | all year | 005 |
| Magnesium, dissolved [as Mg] | daily maximum | report only (mg/L) | all year | 005 |
| Sodium, dissolved [as Na] | daily maximum | report only (mg/L) | all year | 005 |
| Sodium, dissolved [as Na] | daily maximum | report only (mg/L) | all year | 005 |
| Sodium adsorption ratio | daily maximum | report only (Ratio) | all year | 005 |
| Sodium adsorption ratio | daily maximum | report only (Ratio) | all year | 005 |
| Arsenic, total recoverable | daily maximum | ≤ 8.4 ug/L | all year | 005 |
| Barium, total [as Ba] | daily maximum | ≤ 1800 ug/L | all year | 005 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 005 |
| Chloride | daily maximum | ≤ 150 mg/L | all year | 005 |
| Duration | monthly total | report only (d/mo) | all year | 005 |
| Duration | monthly total | report only (d/mo) | all year | 005 |
| Bicarbonate as [CaCO3] | daily maximum | report only (mg/L) | all year | 005 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 005 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 005 |
| Flow | daily maximum | report only (MGD) | all year | 005 |
| Flow | daily maximum | report only (MGD) | all year | 005 |
| Specific conductance | daily maximum | ≤ 7500 umho/cm | all year | 007 |
| Specific conductance | daily maximum | ≤ 7500 umho/cm | all year | 007 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 007 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 007 |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 007 |
| Calcium, dissolved [as Ca] | daily maximum | report only (mg/L) | all year | 007 |
| Calcium, dissolved [as Ca] | daily maximum | report only (mg/L) | all year | 007 |
| Magnesium, dissolved [as Mg] | daily maximum | report only (mg/L) | all year | 007 |
| Magnesium, dissolved [as Mg] | daily maximum | report only (mg/L) | all year | 007 |
| Sodium, dissolved [as Na] | daily maximum | report only (mg/L) | all year | 007 |
| Sodium, dissolved [as Na] | daily maximum | report only (mg/L) | all year | 007 |
| Sodium adsorption ratio | daily maximum | report only (Ratio) | all year | 007 |
| Sodium adsorption ratio | daily maximum | report only (Ratio) | all year | 007 |
| Arsenic, total recoverable | daily maximum | ≤ 8.4 ug/L | all year | 007 |
| Barium, total [as Ba] | daily maximum | ≤ 1800 ug/L | all year | 007 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 007 |
| Chloride | daily maximum | ≤ 150 mg/L | all year | 007 |
| Duration | monthly total | report only (d/mo) | all year | 007 |
| Duration | monthly total | report only (d/mo) | all year | 007 |
| Bicarbonate as [CaCO3] | daily maximum | report only (mg/L) | all year | 007 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 007 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 007 |
| Flow | daily maximum | report only (MGD) | all year | 007 |
| Flow | daily maximum | report only (MGD) | all year | 007 |
| Specific conductance | daily maximum | ≤ 7500 umho/cm | all year | 008 |
| Specific conductance | daily maximum | ≤ 7500 umho/cm | all year | 008 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 008 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 008 |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 008 |
| Calcium, dissolved [as Ca] | daily maximum | report only (mg/L) | all year | 008 |
| Calcium, dissolved [as Ca] | daily maximum | report only (mg/L) | all year | 008 |
| Magnesium, dissolved [as Mg] | daily maximum | report only (mg/L) | all year | 008 |
| Magnesium, dissolved [as Mg] | daily maximum | report only (mg/L) | all year | 008 |
| Sodium, dissolved [as Na] | daily maximum | report only (mg/L) | all year | 008 |
| Sodium, dissolved [as Na] | daily maximum | report only (mg/L) | all year | 008 |
| Sodium adsorption ratio | daily maximum | report only (Ratio) | all year | 008 |
| Sodium adsorption ratio | daily maximum | report only (Ratio) | all year | 008 |
| Arsenic, total recoverable | daily maximum | ≤ 8.4 ug/L | all year | 008 |
| Barium, total [as Ba] | daily maximum | ≤ 1800 ug/L | all year | 008 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 008 |
| Chloride | daily maximum | ≤ 150 mg/L | all year | 008 |
| Duration | monthly total | report only (d/mo) | all year | 008 |
| Duration | monthly total | report only (d/mo) | all year | 008 |
| Bicarbonate as [CaCO3] | daily maximum | report only (mg/L) | all year | 008 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 008 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 008 |
| Flow | daily maximum | report only (MGD) | all year | 008 |
| Flow | daily maximum | report only (MGD) | all year | 008 |
| Specific conductance | daily maximum | ≤ 7500 umho/cm | all year | 012 |
| Specific conductance | daily maximum | ≤ 7500 umho/cm | all year | 012 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 012 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 012 |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 012 |
| Calcium, dissolved [as Ca] | daily maximum | report only (mg/L) | all year | 012 |
| Calcium, dissolved [as Ca] | daily maximum | report only (mg/L) | all year | 012 |
| Magnesium, dissolved [as Mg] | daily maximum | report only (mg/L) | all year | 012 |
| Magnesium, dissolved [as Mg] | daily maximum | report only (mg/L) | all year | 012 |
| Sodium, dissolved [as Na] | daily maximum | report only (mg/L) | all year | 012 |
| Sodium, dissolved [as Na] | daily maximum | report only (mg/L) | all year | 012 |
| Sodium adsorption ratio | daily maximum | report only (Ratio) | all year | 012 |
| Sodium adsorption ratio | daily maximum | report only (Ratio) | all year | 012 |
| Arsenic, total recoverable | daily maximum | ≤ 8.4 ug/L | all year | 012 |
| Barium, total [as Ba] | daily maximum | ≤ 1800 ug/L | all year | 012 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 012 |
| Chloride | daily maximum | ≤ 150 mg/L | all year | 012 |
| Duration | monthly total | report only (d/mo) | all year | 012 |
| Duration | monthly total | report only (d/mo) | all year | 012 |
| Bicarbonate as [CaCO3] | daily maximum | report only (mg/L) | all year | 012 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 012 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 012 |
| Flow | daily maximum | report only (MGD) | all year | 012 |
| Flow | daily maximum | report only (MGD) | all year | 012 |
| Specific conductance | daily maximum | ≤ 7500 umho/cm | all year | 013 |
| Specific conductance | daily maximum | ≤ 7500 umho/cm | all year | 013 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 013 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 013 |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 013 |
| Calcium, dissolved [as Ca] | daily maximum | report only (mg/L) | all year | 013 |
| Calcium, dissolved [as Ca] | daily maximum | report only (mg/L) | all year | 013 |
| Magnesium, dissolved [as Mg] | daily maximum | report only (mg/L) | all year | 013 |
| Magnesium, dissolved [as Mg] | daily maximum | report only (mg/L) | all year | 013 |
| Sodium, dissolved [as Na] | daily maximum | report only (mg/L) | all year | 013 |
| Sodium, dissolved [as Na] | daily maximum | report only (mg/L) | all year | 013 |
| Sodium adsorption ratio | daily maximum | report only (Ratio) | all year | 013 |
| Sodium adsorption ratio | daily maximum | report only (Ratio) | all year | 013 |
| Arsenic, total recoverable | daily maximum | ≤ 8.4 ug/L | all year | 013 |
| Barium, total [as Ba] | daily maximum | ≤ 1800 ug/L | all year | 013 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 013 |
| Chloride | daily maximum | ≤ 150 mg/L | all year | 013 |
| Duration | monthly total | report only (d/mo) | all year | 013 |
| Duration | monthly total | report only (d/mo) | all year | 013 |
| Bicarbonate as [CaCO3] | daily maximum | report only (mg/L) | all year | 013 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 013 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 013 |
| Flow | daily maximum | report only (MGD) | all year | 013 |
| Flow | daily maximum | report only (MGD) | all year | 013 |
| Specific conductance | daily maximum | ≤ 7500 umho/cm | all year | 015 |
| Specific conductance | daily maximum | ≤ 7500 umho/cm | all year | 015 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 015 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 015 |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 015 |
| Calcium, dissolved [as Ca] | daily maximum | report only (mg/L) | all year | 015 |
| Calcium, dissolved [as Ca] | daily maximum | report only (mg/L) | all year | 015 |
| Magnesium, dissolved [as Mg] | daily maximum | report only (mg/L) | all year | 015 |
| Magnesium, dissolved [as Mg] | daily maximum | report only (mg/L) | all year | 015 |
| Sodium, dissolved [as Na] | daily maximum | report only (mg/L) | all year | 015 |
| Sodium, dissolved [as Na] | daily maximum | report only (mg/L) | all year | 015 |
| Sodium adsorption ratio | daily maximum | report only (Ratio) | all year | 015 |
| Sodium adsorption ratio | daily maximum | report only (Ratio) | all year | 015 |
| Arsenic, total recoverable | daily maximum | ≤ 8.4 ug/L | all year | 015 |
| Barium, total [as Ba] | daily maximum | ≤ 1800 ug/L | all year | 015 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 015 |
| Chloride | daily maximum | ≤ 150 mg/L | all year | 015 |
| Duration | monthly total | report only (d/mo) | all year | 015 |
| Duration | monthly total | report only (d/mo) | all year | 015 |
| Bicarbonate as [CaCO3] | daily maximum | report only (mg/L) | all year | 015 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 015 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 015 |
| Flow | daily maximum | report only (MGD) | all year | 015 |
| Flow | daily maximum | report only (MGD) | all year | 015 |
| Specific conductance | daily maximum | ≤ 7500 umho/cm | all year | 017 |
| Specific conductance | daily maximum | ≤ 7500 umho/cm | all year | 017 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 017 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 017 |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 017 |
| Calcium, dissolved [as Ca] | daily maximum | report only (mg/L) | all year | 017 |
| Calcium, dissolved [as Ca] | daily maximum | report only (mg/L) | all year | 017 |
| Magnesium, dissolved [as Mg] | daily maximum | report only (mg/L) | all year | 017 |
| Magnesium, dissolved [as Mg] | daily maximum | report only (mg/L) | all year | 017 |
| Sodium, dissolved [as Na] | daily maximum | report only (mg/L) | all year | 017 |
| Sodium, dissolved [as Na] | daily maximum | report only (mg/L) | all year | 017 |
| Sodium adsorption ratio | daily maximum | report only (Ratio) | all year | 017 |
| Sodium adsorption ratio | daily maximum | report only (Ratio) | all year | 017 |
| Arsenic, total recoverable | daily maximum | ≤ 8.4 ug/L | all year | 017 |
| Barium, total [as Ba] | daily maximum | ≤ 1800 ug/L | all year | 017 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 017 |
| Chloride | daily maximum | ≤ 150 mg/L | all year | 017 |
| Duration | monthly total | report only (d/mo) | all year | 017 |
| Duration | monthly total | report only (d/mo) | all year | 017 |
| Bicarbonate as [CaCO3] | daily maximum | report only (mg/L) | all year | 017 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 017 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 017 |
| Flow | daily maximum | report only (MGD) | all year | 017 |
| Flow | daily maximum | report only (MGD) | all year | 017 |
| Specific conductance | daily maximum | ≤ 7500 umho/cm | all year | 020 |
| Specific conductance | daily maximum | ≤ 7500 umho/cm | all year | 020 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 020 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 020 |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 020 |
| Calcium, dissolved [as Ca] | daily maximum | report only (mg/L) | all year | 020 |
| Calcium, dissolved [as Ca] | daily maximum | report only (mg/L) | all year | 020 |
| Magnesium, dissolved [as Mg] | daily maximum | report only (mg/L) | all year | 020 |
| Magnesium, dissolved [as Mg] | daily maximum | report only (mg/L) | all year | 020 |
| Sodium, dissolved [as Na] | daily maximum | report only (mg/L) | all year | 020 |
| Sodium, dissolved [as Na] | daily maximum | report only (mg/L) | all year | 020 |
| Sodium adsorption ratio | daily maximum | report only (Ratio) | all year | 020 |
| Sodium adsorption ratio | daily maximum | report only (Ratio) | all year | 020 |
| Arsenic, total recoverable | daily maximum | ≤ 8.4 ug/L | all year | 020 |
| Barium, total [as Ba] | daily maximum | ≤ 1800 ug/L | all year | 020 |
| Iron, dissolved [as Fe] | daily maximum | ≤ 1000 ug/L | all year | 020 |
| Chloride | daily maximum | ≤ 150 mg/L | all year | 020 |
| Duration | monthly total | report only (d/mo) | all year | 020 |
| Duration | monthly total | report only (d/mo) | all year | 020 |
| Bicarbonate as [CaCO3] | daily maximum | report only (mg/L) | all year | 020 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 020 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 020 |
| Flow | daily maximum | report only (MGD) | all year | 020 |
| Flow | daily maximum | report only (MGD) | all year | 020 |
| Specific conductance | daily maximum | report only (umho/cm) | all year | DPR |
| Specific conductance | daily maximum | report only (umho/cm) | all year | DPR |
| Calcium, dissolved [as Ca] | daily maximum | report only (mg/L) | all year | DPR |
| Calcium, dissolved [as Ca] | daily maximum | report only (mg/L) | all year | DPR |
| Magnesium, dissolved [as Mg] | daily maximum | report only (mg/L) | all year | DPR |
| Magnesium, dissolved [as Mg] | daily maximum | report only (mg/L) | all year | DPR |
| Sodium, dissolved [as Na] | daily maximum | report only (mg/L) | all year | DPR |
| Sodium, dissolved [as Na] | daily maximum | report only (mg/L) | all year | DPR |
| Sodium adsorption ratio | daily maximum | report only (Ratio) | all year | DPR |
| Sodium adsorption ratio | daily maximum | report only (Ratio) | all year | DPR |
| Specific conductance | daily maximum | report only (umho/cm) | all year | TRB1 |
| Specific conductance | daily maximum | report only (umho/cm) | all year | TRB1 |
| Calcium, dissolved [as Ca] | daily maximum | report only (mg/L) | all year | TRB1 |
| Calcium, dissolved [as Ca] | daily maximum | report only (mg/L) | all year | TRB1 |
| Magnesium, dissolved [as Mg] | daily maximum | report only (mg/L) | all year | TRB1 |
| Magnesium, dissolved [as Mg] | daily maximum | report only (mg/L) | all year | TRB1 |
| Sodium, dissolved [as Na] | daily maximum | report only (mg/L) | all year | TRB1 |
| Sodium, dissolved [as Na] | daily maximum | report only (mg/L) | all year | TRB1 |
| Sodium adsorption ratio | daily maximum | report only (Ratio) | all year | TRB1 |
| Sodium adsorption ratio | daily maximum | report only (Ratio) | all year | TRB1 |
| Flow | daily maximum | report only (MGD) | all year | TRB1 |
| Flow | daily maximum | report only (MGD) | all year | TRB1 |
| Specific conductance | daily maximum | report only (umho/cm) | all year | UPR |
| Specific conductance | daily maximum | report only (umho/cm) | all year | UPR |
| Calcium, dissolved [as Ca] | daily maximum | report only (mg/L) | all year | UPR |
| Calcium, dissolved [as Ca] | daily maximum | report only (mg/L) | all year | UPR |
| Magnesium, dissolved [as Mg] | daily maximum | report only (mg/L) | all year | UPR |
| Magnesium, dissolved [as Mg] | daily maximum | report only (mg/L) | all year | UPR |
| Sodium, dissolved [as Na] | daily maximum | report only (mg/L) | all year | UPR |
| Sodium, dissolved [as Na] | daily maximum | report only (mg/L) | all year | UPR |
| Sodium adsorption ratio | daily maximum | report only (Ratio) | all year | UPR |
| Sodium adsorption ratio | daily maximum | report only (Ratio) | all year | UPR |
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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