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McMurry Ready Mix

Crushed And Broken Limestone, Unknown, Wyoming. NPDES permit WY0094170 expired Aug 31, 2024; its limits still apply. Last 12 months: no values over a limit, 3 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form QU quarterly (20 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 2 of 12 reports late

Limits in force (20)

ParameterStatisticLimitMonths
pHinstantaneous minimum≥ 6.5 SUall year
pHinstantaneous minimum≥ 6.5 SUall year
pHinstantaneous maximum≤ 9 SUall year
pHinstantaneous maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendeddaily maximum≤ 90 mg/Lall year
Solids, total suspendeddaily maximum≤ 90 mg/Lall year
Durationmonthly totalreport only (d)all year
Durationmonthly totalreport only (d)all year
Solids, total dissolveddaily maximum≤ 5000 mg/Lall year
Solids, total dissolveddaily maximum≤ 5000 mg/Lall year
Flowdaily maximumreport only (MGD)all year
Flowdaily maximumreport only (MGD)all 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 8 Mining and Quarrying of Nonmetallic Minerals 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/WY0094170 · MCP: https://passage-data.com/mcp