Lost Creek ISR, LLC

NPDES permit WY0097006 · Minor NON-POTW · effective, expires 2029-06-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

EPA's record, 2025-09-01 to 2026-08-31

0values over a limit
0required values missing, on 0 form(s)
7of 28 forms filed late

Last period with anything received: 2026-08-31.

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (22)

OutfallParameterStatisticLimitMonths
001pHINST MIN >= 6.5 SU all year
001pHINST MAX <= 9 SU all year
001Zinc, dissolved [as Zn]MO AVG <= 41.4 ug/L all year
001Zinc, dissolved [as Zn]MO AVG <= 41.4 ug/L all year
001Zinc, dissolved [as Zn]DAILY MX <= 41.1 ug/L all year
001Zinc, dissolved [as Zn]DAILY MX <= 41.1 ug/L all year
001Selenium, total [as Se]DAILY MX <= 5 ug/L all year
001Selenium, total [as Se]DAILY MX <= 5 ug/L all year
001Radium 226 + radium 228, totalDAILY MX <= 5 pCi/L all year
001Radium 226 + radium 228, totalDAILY MX <= 5 pCi/L all year
001Uranium, totalDAILY MX <= 30 ug/L all year
001Uranium, totalDAILY MX <= 30 ug/L all year
001DurationMO TOTAL report only all year
001DurationMO TOTAL report only all year
001Beta/photon emittersANNL MAX <= 4 mrems/yr all year
001Flow, process wastewaterDAILY MX report only all year
001Flow, process wastewaterDAILY MX report only all year
001Flow, process wastewaterMO AVG report only all year
001Flow, process wastewaterMO AVG report only all year
001Radiation, gross alphaDAILY MX <= 15 pCi/L all year
001Radiation, gross alphaDAILY MX <= 15 pCi/L all year
001Produced water, oil and greaseDAILY MX <= 10 mg/L all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states