CRG Mining LLC

NPDES permit CO0049023 · Minor NON-POTW · administratively continued, expires 2022-12-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2022-12-31 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

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

0values over a limit
0required values missing, on 0 form(s)
0of 4 forms filed late

Last period with anything received: 2026-06-30.

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among CO permits in EPA's filings — check your permit).

Limits in force (14)

OutfallParameterStatisticLimitMonths
001TurbidityQB <= 50 NTU (alert) all year
001pHMINIMUM >= 6 SU (alert) all year
001pHMAXIMUM <= 9 SU (alert) all year
001Solids, total suspendedQB <= 100 mg/L (alert) all year
001Arsenic, total [as As]QB <= 150 ug/L (alert) all year
001Cadmium, total [as Cd]QB <= 1.3 ug/L (alert) all year
001Copper, total [as Cu]QB <= 9 ug/L (alert) all year
001Iron, total [as Fe]QB <= 1000 ug/L (alert) all year
001Lead, total [as Pb]QB <= 45 ug/L (alert) all year
001Nickel, total [as Ni]QB <= 320 ug/L (alert) all year
001Silver, total [as Ag]QB <= 1.7 ug/L (alert) all year
001Zinc, total [as Zn]QB <= 80 ug/L (alert) all year
001Selenium, total [as Se]QB <= 5 ug/L (alert) all year
001Mercury, total [as Hg]QB <= 1.4 ug/L (alert) 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