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Wesco Operating Inc

Crude Petroleum And Natural Gas, Fremont County, Wyoming. NPDES permit WY0000469 expired Dec 31, 2012; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form S twice a year
Last report on file
June 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 2 reports late

Limits in force (12)

ParameterStatisticLimitMonths
Specific conductancedaily maximum≤ 7500 umho/cmall year
Sulfate [as S]daily maximum≤ 3000 mg/Lall year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 9 SUall year
Oil & Greasedaily maximum≤ 10 mg/Lall year
Chloride [as Cl]daily maximum≤ 2000 mg/Lall year
Radium 226, totaldaily maximum≤ 60 pCi/Lall year
Floating solids, waste or visible foam-visualdaily maximum≤ 0 N=0;Y=1all year
Flow, in conduit or thru treatment plant30-day averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Solids, total dissolveddaily maximum≤ 5000 mg/Lall year
Oil and grease visualinstantaneous maximum≤ 0 N=0;Y=1all 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/WY0000469 · MCP: https://passage-data.com/mcp