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Granite Creek Operating LLC

Crude Petroleum And Natural Gas, (Unknown City), Wyoming. NPDES permit WY0023248, in force until Jun 30, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form AA yearly
Renewal application due
Jan 1, 2027 · 180 days before expiry; your permit may set another date
Last report on file
December 2025
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 1 report late

Limits in force (17)

ParameterStatisticLimitMonths
Specific conductanceannual averagereport only (umho/cm)all year
Specific conductancedaily maximum≤ 7500 umho/cmall year
pHinstantaneous minimum≥ 6.5 SUall year
pHinstantaneous maximum≤ 9 SUall year
Sulfide, total [as S]annual averagereport only (mg/L)all year
Sulfide, total [as S]daily maximumreport only (mg/L)all year
Sulfate, total [as SO4]annual averagereport only (mg/L)all year
Sulfate, total [as SO4]daily maximum≤ 3000 mg/Lall year
Radium 226 + radium 228, totalannual averagereport only (pCi/L)all year
Radium 226 + radium 228, totaldaily maximum≤ 5 pCi/Lall year
Chlorideannual averagereport only (mg/L)all year
Chloridedaily maximum≤ 860 mg/Lall year
Flowmonthly averagereport only (MGD)all year
Flowdaily maximumreport only (MGD)all year
Flowannual averagereport only (MGD)all year
Produced water, oil and greaseannual averagereport only (mg/L)all 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/WY0023248 · MCP: https://passage-data.com/mcp