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Mission Creek OpCo, LLC - McKamie Gas Plant

Natural Gas Liquids, Stamps, Arkansas. NPDES permit AR0046418, in force until Nov 30, 2026. Last 12 months: over a limit once (last March 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: form A monthly (11 values), form Q quarterly (6 values)
Renewal application due
Jun 3, 2026 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 16 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
March 2026Oxygen, dissolved [DO], instantaneous minimum4.2 mg/L≥ 5 mg/L16%

Limits in force (18)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/LJan, Feb, Mar, Apr, Nov, Dec
Oxygen, dissolved [DO]instantaneous minimum≥ 2 mg/LMay–Oct
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 35 mg/Lall year
Solids, total suspendeddaily maximum≤ 52.5 mg/Lall year
Oil & Greasemonthly average≤ 10 mg/Lall year
Oil & Greasedaily maximum≤ 15 mg/Lall year
Zinc, total recoverablemonthly average≤ 116 ug/Lall year
Zinc, total recoverabledaily maximum≤ 232 ug/Lall year
Copper, total recoverablemonthly average≤ 12.2 ug/Lall year
Copper, total recoverabledaily maximum≤ 24.5 ug/Lall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Mercury, total recoverablemonthly average≤ .0134 ug/Lall year
Mercury, total recoverabledaily maximum≤ .0269 ug/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 15 mg/Lall year

How strict are these limits?

Cited limits by parameter: Arkansas's rules and the federal ones.

Same industry: the 4 Oil and Gas Extraction permits in Arkansas.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/AR0046418 · MCP: https://passage-data.com/mcp