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Mullinax Inc.

Industrial or other facility, Unknown, Wyoming. NPDES permit WY0095851 expired May 31, 2026; its limits still apply. Last 12 months: over a limit once (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due: About 28 days after each period: form MS monthly (9 values)
Last report on file: September 2026
Oct 2024 – Sep 2025: 2 values over a limit, 0 required values missing, 4 of 12 reports late

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

Period ending	Parameter	Reported	Limit
June 2026	pH, instantaneous maximum	9.1 SU	≤ 9 SU

Limits in force (9)

Parameter	Statistic	Limit	Months
pH	instantaneous minimum	≥ 6.5 SU	all year
pH	instantaneous maximum	≤ 9 SU	all year
Solids, total suspended	monthly average	≤ 30 mg/L	all year
Solids, total suspended	weekly average	≤ 45 mg/L	all year
Solids, total suspended	daily maximum	≤ 90 mg/L	all year
Duration	monthly total	report only (d)	all year
Flow	daily maximum	report only (MGD)	all year
Flow	monthly average	report only (MGD)	all year
Produced water, oil and grease	daily maximum	≤ 10 mg/L	all year

How strict are these limits?

Solids, total suspended, monthly average 30 mg/L — stricter than 25% of 80 other minor industrial and other permits in Wyoming; 53% have the same limit

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/WY0095851 · MCP: https://passage-data.com/mcp