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Lost Creek ISR, LLC

Uranium-Radium-Vanadium Ores, (Unknown City), Wyoming. NPDES permit WY0097006, in force until Jun 30, 2029. Last 12 months: no values over a limit, 4 of 25 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form MA monthly (1 value), form MQ quarterly (18 values), form QQ quarterly (3 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 1 required value missing, 11 of 26 reports late

Limits in force (22)

ParameterStatisticLimitMonths
pHinstantaneous minimum≥ 6.5 SUall year
pHinstantaneous maximum≤ 9 SUall year
Zinc, dissolved [as Zn]monthly average≤ 41.4 ug/Lall year
Zinc, dissolved [as Zn]monthly average≤ 41.4 ug/Lall year
Zinc, dissolved [as Zn]daily maximum≤ 41.1 ug/Lall year
Zinc, dissolved [as Zn]daily maximum≤ 41.1 ug/Lall year
Selenium, total [as Se]daily maximum≤ 5 ug/Lall year
Selenium, total [as Se]daily maximum≤ 5 ug/Lall year
Radium 226 + radium 228, totaldaily maximum≤ 5 pCi/Lall year
Radium 226 + radium 228, totaldaily maximum≤ 5 pCi/Lall year
Uranium, totaldaily maximum≤ 30 ug/Lall year
Uranium, totaldaily maximum≤ 30 ug/Lall year
Durationmonthly totalreport only (d/mo)all year
Durationmonthly totalreport only (d/mo)all year
Beta/photon emittersannual maximum≤ 4 mrems/yrall year
Flow, process wastewaterdaily maximumreport only (MGD)all year
Flow, process wastewaterdaily maximumreport only (MGD)all year
Flow, process wastewatermonthly averagereport only (MGD)all year
Flow, process wastewatermonthly averagereport only (MGD)all year
Radiation, gross alphadaily maximum≤ 15 pCi/Lall year
Radiation, gross alphadaily maximum≤ 15 pCi/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 3 Metal Mining 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/WY0097006 · MCP: https://passage-data.com/mcp