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Natural Gas Liquids, Medford, Oklahoma. NPDES permit OK0045306, in force until Nov 30, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | monthly average | ≤ 52 deg C | all year | 007 |
| Temperature, water deg. centigrade | daily maximum | ≤ 52 deg C | all year | 007 |
| pH | minimum | ≥ 6.5 SU | all year | 007 |
| pH | maximum | ≤ 9 SU | all year | 007 |
| Oil & Grease | monthly average | report only (mg/L) | all year | 007 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 007 |
| Cyanide, total [as CN] | monthly average | ≤ 10.16 ug/L | all year | 007 |
| Cyanide, total [as CN] | daily maximum | ≤ 17.61 ug/L | all year | 007 |
| Cyanide, total [as CN] | monthly average | ≤ .03 lb/d | all year | 007 |
| Cyanide, total [as CN] | daily maximum | ≤ .06 lb/d | all year | 007 |
| Sulfate, total [as SO4] | monthly average | ≤ 538 mg/L | all year | 007 |
| Sulfate, total [as SO4] | daily maximum | ≤ 739 mg/L | all year | 007 |
| Sulfate, total [as SO4] | monthly average | ≤ 775 lb/d | all year | 007 |
| Sulfate, total [as SO4] | daily maximum | ≤ 1065 lb/d | all year | 007 |
| Lead, total [as Pb] | monthly average | ≤ 24.12 ug/L | all year | 007 |
| Lead, total [as Pb] | daily maximum | ≤ 41.8 ug/L | all year | 007 |
| Lead, total [as Pb] | monthly average | ≤ .08 lb/d | all year | 007 |
| Lead, total [as Pb] | daily maximum | ≤ .139 lb/d | all year | 007 |
| Zinc, total [as Zn] | monthly average | ≤ 400.98 ug/L | all year | 007 |
| Zinc, total [as Zn] | daily maximum | ≤ 694.71 ug/L | all year | 007 |
| Zinc, total [as Zn] | monthly average | ≤ 1.34 lb/d | all year | 007 |
| Zinc, total [as Zn] | daily maximum | ≤ 2.32 lb/d | all year | 007 |
| Selenium, total [as Se] | monthly average | ≤ 4.74 ug/L | all year | 007 |
| Selenium, total [as Se] | daily maximum | ≤ 8.21 ug/L | all year | 007 |
| Selenium, total [as Se] | monthly average | ≤ .01 lb/d | all year | 007 |
| Selenium, total [as Se] | daily maximum | ≤ .02 lb/d | all year | 007 |
| Oxidants, total residual | instantaneous maximum | ≤ .099 mg/L | all year | 007 |
| Oxidants, free available | monthly average | ≤ .2 mg/L | all year | 007 |
| Oxidants, free available | daily maximum | ≤ .5 mg/L | all year | 007 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 007 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 007 |
| Solids, total dissolved [TDS] | monthly average | report only (mg/L) | all year | 007 |
| Solids, total dissolved [TDS] | daily maximum | report only (mg/L) | all year | 007 |
| Whole effluent toxicity - retest #1 | 7-day minimum | report only (pass=0;fail=1) | all year | TX7 |
| Whole effluent toxicity - retest #2 | 7-day minimum | report only (pass=0;fail=1) | all year | TX7 |
| Solids, total dissolved- 180 deg. C | daily minimum | report only (mg/L) | all year | TX7 |
| Solids, total dissolved- 180 deg. C | monthly average | report only (mg/L) | all year | TX7 |
| Solids, total dissolved- 180 deg. C | daily maximum | report only (mg/L) | all year | TX7 |
| Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (pass=0;fail=1) | all year | TX7 |
| Pass/Fail Static Renewal 7Day Chronic Pimephales promelas | 7-day minimum | report only (pass=0;fail=1) | all year | TX7 |
| %Mortality 7Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (%) | all year | TX7 |
| %Mortality Static Renewal 7Day Chronic Pimephales Promelas | 7-day minimum | report only (%) | all year | TX7 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (pass=0;fail=1) | all year | TX7 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 7-day minimum | report only (pass=0;fail=1) | all year | TX7 |
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (%) | all year | TX7 |
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 7-day minimum | report only (%) | all year | TX7 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (%) | all year | TX7 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 7-day minimum | report only (%) | all year | TX7 |
| Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (%) | all year | TX7 |
| Coef Of Var Static Renewal 7Day Chronic Pimephales promelas | 7-day minimum | report only (%) | all year | TX7 |
Cited limits by parameter: Oklahoma's rules and the federal ones.
Same industry: the 6 Oil and Gas Extraction permits in Oklahoma.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/OK0045306 · MCP: https://passage-data.com/mcp