Climax Molybdenum Company - Climax Mine

NPDES permit CO0000248 · Major NON-POTW · administratively continued, expires 2018-03-31 · 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 2018-03-31 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

0values over a limit
0required values missing, on 0 form(s)
0of 30 forms filed late

Last period with anything received: 2026-07-31.

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 (43)

OutfallParameterStatisticLimitMonths
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 9 SU all year
001Iron, total recoverable30DA AVG report only all year
001Molybdenum, total recoverable30DA AVG report only all year
001Zinc, potentially dissolved30DA AVG report only all year
001Zinc, potentially dissolvedDAILY MX report only all year
001Cadmium, potentially dissolvd30DA AVG <= 6.2 ug/L all year
001Cadmium, potentially dissolvdDAILY MX report only all year
001Chromium, trivalent, potentially dissolvd30DA AVG report only all year
001Chromium, trivalent, potentially dissolvdDAILY MX report only all year
001Manganese, potentially dissolvd30DA AVG <= 2618 ug/L all year
001Manganese, potentially dissolvdDAILY MX <= 4738 ug/L all year
001Nickel, potentially dissolvd30DA AVG report only all year
001Nickel, potentially dissolvdDAILY MX report only all year
001Selenium, potentially dissolvd30DA AVG report only all year
001Oil and greaseINST MAX <= 10 mg/L all year
001Flow, in conduit or thru treatment plant30DA AVG <= 220 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Sulfide-hydrogen sulfide [undissociated]30DA AVG report only all year
001Solids, total dissolved30DA AVG report only all year
001Mercury, total [as Hg]30DA AVG report only all year
001Boron, total30DA AVG report only all year
001Oil and grease visualINST MAX report only all year
001Static Renewal 7 Day Chronic Ceriodaphnia dubiaSINGSAMP report only all year
001Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE report only all year
001Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE report only all year
001Static Renewal 7 Day Chronic Pimephales promelasSINGSAMP report only all year
001Static Renewal 7 Day Chronic Pimephales promelasMN VALUE report only all year
001Static Renewal 7 Day Chronic Pimephales promelasMN VALUE report only all year
002pHMINIMUM report only all year
002pHMAXIMUM report only all year
002Solids, total suspended30DA AVG report only all year
002Solids, total suspendedMX 7D AV report only all year
002Arsenic, total recoverable30DA AVG report only all year
002Arsenic, total recoverableDAILY MX report only all year
002Zinc, total recoverable30DA AVG report only all year
002Zinc, total recoverableDAILY MX report only all year
002Cadmium, total recoverable30DA AVG report only all year
002Cadmium, total recoverableDAILY MX report only all year
002Lead, total recoverable30DA AVG report only all year
002Lead, total recoverableDAILY MX report only all year
002Copper, total recoverable30DA AVG report only all year
002Copper, total recoverableDAILY 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