Elk Ridge Mining and Reclamation LLC

NPDES permit CO0000213 · Minor NON-POTW · administratively continued, expires 2021-03-31 · 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.

This permit expired on 2021-03-31 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

2values over a limit
0required values missing, on 0 form(s)
0of 55 forms filed late

Last period with anything received: 2026-07-31. Most often over: Static Renewal 7 Day Chronic Ceriodaphnia dubia (2).

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 (98)

OutfallParameterStatisticLimitMonths
012pHMINIMUM >= 6.5 SU all year
012pHMAXIMUM <= 9 SU all year
012Solids, total suspended30DA AVG <= 35 mg/L all year
012Solids, total suspendedMX 7D AV <= 70 mg/L all year
012Arsenic, total recoverable30DA AVG report only all year
012Iron, total recoverable30DA AVG <= 3000 ug/L all year
012Iron, total recoverable30DA AVG <= 1000 ug/L all year
012Iron, total recoverableDAILY MX <= 6000 ug/L all year
012Iron, total recoverableDAILY MX <= 6000 ug/L all year
012Zinc, potentially dissolved30DA AVG report only all year
012Zinc, potentially dissolvedDAILY MX report only all year
012Manganese, potentially dissolvd30DA AVG report only all year
012Manganese, potentially dissolvdDAILY MX report only all year
012Selenium, potentially dissolvd30DA AVG report only all year
012Selenium, potentially dissolvdDAILY MX report only all year
012Oil and greaseINST MAX <= 10 mg/L all year
012Chromium, trivalent total recoverableDAILY MX report only all year
012Flow, in conduit or thru treatment plant30DA AVG <= 1.09 MGD all year
012Flow, in conduit or thru treatment plantDAILY MX report only all year
012Mercury, total low levelDAILY MX report only all year
012Sulfide-hydrogen sulfide [undissociated]DAILY MX report only all year
012Oil and grease visualINST MAX report only all year
013pHMINIMUM >= 6.5 SU all year
013pHMAXIMUM <= 9 SU all year
013Solids, total suspended30DA AVG <= 35 mg/L all year
013Solids, total suspendedMX 7D AV <= 70 mg/L all year
013Arsenic, total recoverable30DA AVG report only all year
013Iron, total recoverable30DA AVG <= 3000 ug/L all year
013Iron, total recoverableDAILY MX <= 6000 ug/L all year
013Zinc, potentially dissolved30DA AVG report only all year
013Zinc, potentially dissolvedDAILY MX report only all year
013Manganese, potentially dissolvd30DA AVG <= 4120 ug/L all year
013Manganese, potentially dissolvd30DA AVG <= 2618 ug/L all year
013Manganese, potentially dissolvdDAILY MX <= 4738 ug/L all year
013Manganese, potentially dissolvdDAILY MX <= 4738 ug/L all year
013Selenium, potentially dissolvd30DA AVG <= 26 ug/L all year
013Selenium, potentially dissolvd30DA AVG <= 2.3 ug/L all year
013Selenium, potentially dissolvdDAILY MX <= 26 ug/L all year
013Selenium, potentially dissolvdDAILY MX <= 18 ug/L all year
013Oil and greaseINST MAX <= 10 mg/L all year
013Chromium, trivalent total recoverableDAILY MX report only all year
013Flow, in conduit or thru treatment plant30DA AVG <= 1.44 MGD all year
013Flow, in conduit or thru treatment plantDAILY MX report only all year
013Mercury, total low level30DA AVG report only all year
013Sulfide-hydrogen sulfide [undissociated]DAILY MX report only all year
013Solids, total dissolved30DA AVG report only all year
013Solids, total dissolvedDAILY MX report only all year
013Oil and grease visualINST MAX report only all year
013Static Renewal 7 Day Chronic Ceriodaphnia dubiaSINGSAMP report only all year
013Static Renewal 7 Day Chronic Ceriodaphnia dubiaSINGSAMP report only Mar
013Static Renewal 7 Day Chronic Ceriodaphnia dubiaSINGSAMP report only Jun
013Static Renewal 7 Day Chronic Ceriodaphnia dubiaSINGSAMP report only Sep
013Static Renewal 7 Day Chronic Ceriodaphnia dubiaSINGSAMP report only Dec
013Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE report only all year
013Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE report only Mar
013Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE report only Jun
013Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE report only Sep
013Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE report only Dec
013Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE >= 100 tox chronic all year
013Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE report only Mar
013Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE >= 100 tox chronic Jun
013Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE >= 100 tox chronic Sep
013Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE report only Dec
013Static Renewal 7 Day Chronic Pimephales promelasSINGSAMP report only all year
013Static Renewal 7 Day Chronic Pimephales promelasSINGSAMP report only Mar
013Static Renewal 7 Day Chronic Pimephales promelasSINGSAMP report only Jun
013Static Renewal 7 Day Chronic Pimephales promelasSINGSAMP report only Sep
013Static Renewal 7 Day Chronic Pimephales promelasSINGSAMP report only Dec
013Static Renewal 7 Day Chronic Pimephales promelasMN VALUE report only all year
013Static Renewal 7 Day Chronic Pimephales promelasMN VALUE report only Mar
013Static Renewal 7 Day Chronic Pimephales promelasMN VALUE report only Jun
013Static Renewal 7 Day Chronic Pimephales promelasMN VALUE report only Sep
013Static Renewal 7 Day Chronic Pimephales promelasMN VALUE report only Dec
013Static Renewal 7 Day Chronic Pimephales promelasMN VALUE >= 100 tox chronic all year
013Static Renewal 7 Day Chronic Pimephales promelasMN VALUE report only Mar
013Static Renewal 7 Day Chronic Pimephales promelasMN VALUE >= 100 tox chronic Jun
013Static Renewal 7 Day Chronic Pimephales promelasMN VALUE >= 100 tox chronic Sep
013Static Renewal 7 Day Chronic Pimephales promelasMN VALUE report only Dec
016pHMINIMUM >= 6.5 SU all year
016pHMAXIMUM <= 9 SU all year
016Solids, total suspended5B <= 35 mg/L all year
016Solids, total suspendedMX 7D AV <= 70 mg/L all year
016Arsenic, total recoverable30DA AVG report only all year
016Iron, total recoverable30DA AVG <= 3000 ug/L all year
016Iron, total recoverable30DA AVG <= 1000 ug/L all year
016Iron, total recoverableDAILY MX <= 6000 ug/L all year
016Iron, total recoverableDAILY MX <= 2000 ug/L all year
016Zinc, potentially dissolved30DA AVG report only all year
016Zinc, potentially dissolvedDAILY MX report only all year
016Manganese, potentially dissolvd30DA AVG report only all year
016Manganese, potentially dissolvdDAILY MX report only all year
016Selenium, potentially dissolvd30DA AVG report only all year
016Selenium, potentially dissolvdDAILY MX report only all year
016Chromium, trivalent total recoverableDAILY MX report only all year
016Flow, in conduit or thru treatment plant30DA AVG <= 3.123 MGD all year
016Flow, in conduit or thru treatment plantDAILY MX report only all year
016Mercury, total low levelDAILY MX report only all year
016Sulfide-hydrogen sulfide [undissociated]DAILY MX report only 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