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True Oil, LLC

Industrial or other facility, (Unknown City), Wyoming. NPDES permit WY0096521, in force until Apr 30, 2030. Last 12 months: over a limit once (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form OM quarterly (11 values), outfall 001 form OB twice a year, outfall 001 form OS twice a year, outfall DMP1 form D1 twice a year
Last report on file
June 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 21 reports late

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

Period endingParameterReportedLimit
June 2026pH, instantaneous minimum6.25 SU≥ 6.5 SU

Limits in force (16)

ParameterStatisticLimitMonthsOutfall
Specific conductancedaily maximum≤ 7500 umho/cmall year001
pHinstantaneous minimum≥ 6.5 SUall year001
pHinstantaneous maximum≤ 9 SUall year001
Sulfide, total [as S]daily maximumreport only (ug/L)all year001
Radium 226, totaldaily maximum≤ 60 pCi/Lall year001
Chloridedaily maximum≤ 2000 mg/Lall year001
Solids, total dissolveddaily maximum≤ 5000 mg/L (alert, not enforceable)all year001
Flowdaily maximumreport only (MGD)all year001
Flowmonthly averagereport only (MGD)all year001
Flowmonthly averagereport only (MGD)all year001
Flowdaily maximumreport only (MGD)all year001
Sulfatedaily maximum≤ 3000 mg/Lall year001
Produced water, oil and greasedaily maximum≤ 10 mg/Lall year001
pHinstantaneous maximumreport only (SU)all yearDMP1
pHinstantaneous minimumreport only (SU)all yearDMP1
Sulfide, total [as S]daily maximumreport only (mg/L)all yearDMP1

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/WY0096521 · MCP: https://passage-data.com/mcp