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Big Muddy Operating, LLC

Crude Petroleum And Natural Gas, (Unknown City), Wyoming. NPDES permit WY0000710, in force until Jan 31, 2028. Last 12 months: no values over a limit, 1 of 3 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form QS twice a year (20 values)
Renewal application due
Aug 4, 2027 · 180 days before expiry; your permit may set another date
Last report on file
June 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 2 of 4 reports late

Limits in force (20)

ParameterStatisticLimitMonths
Specific conductancedaily maximum≤ 7500 umho/cmall year
Specific conductancedaily maximum≤ 7500 umho/cmall year
pHinstantaneous minimum≥ 6.5 SUall year
pHinstantaneous minimum≥ 6.5 SUall year
pHinstantaneous maximum≤ 9 SUall year
pHinstantaneous maximum≤ 9 SUall year
Sulfide, total [as S]daily maximumreport only (mg/L)all year
Sulfide, total [as S]daily maximumreport only (mg/L)all year
Sulfate, total [as SO4]daily maximum≤ 3000 mg/Lall year
Sulfate, total [as SO4]daily maximum≤ 3000 mg/Lall year
Radium 226 + radium 228, totaldaily maximum≤ 60 pCi/Lall year
Radium 226 + radium 228, totaldaily maximum≤ 60 pCi/Lall year
Chloridedaily maximum≤ 2000 mg/Lall year
Chloridedaily maximum≤ 2000 mg/Lall year
Flowdaily maximum≤ .0036 MGDall year
Flowdaily maximum≤ .0036 MGDall year
Flowmonthly averagereport only (MGD)all year
Flowmonthly averagereport only (MGD)all year
Produced water, oil and greasedaily maximum≤ 10 mg/Lall year
Produced water, oil and greasedaily maximum≤ 10 mg/Lall year

How strict are these limits?

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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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/WY0000710 · MCP: https://passage-data.com/mcp