Climax Molybdenum Company

NPDES permit CO0041467 · Major NON-POTW · administratively continued, expires 2017-10-31 · 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 2017-10-31 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 26 forms filed late

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

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 (147)

OutfallParameterStatisticLimitMonths
006Temperature, water deg. centigradeMX WK AV report only Jun, Jul
006Temperature, water deg. centigradeMX WK AV report only Aug, Sep
006Temperature, water deg. centigradeMX WK AV report only Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Temperature, water deg. centigradeDAILY MX report only Jun, Jul
006Temperature, water deg. centigradeDAILY MX report only Aug, Sep
006Temperature, water deg. centigradeDAILY MX report only Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006pHMINIMUM >= 6.5 SU Jun, Jul
006pHMINIMUM >= 6.5 SU Aug, Sep
006pHMINIMUM >= 6.5 SU Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006pHMAXIMUM <= 9 SU Jun, Jul
006pHMAXIMUM <= 9 SU Aug, Sep
006pHMAXIMUM <= 9 SU Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Solids, total suspended30DA AVG <= 20 mg/L Jun, Jul
006Solids, total suspended30DA AVG <= 20 mg/L Aug, Sep
006Solids, total suspended30DA AVG <= 20 mg/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Solids, total suspendedMX 7D AV <= 30 mg/L Jun, Jul
006Solids, total suspendedMX 7D AV <= 30 mg/L Aug, Sep
006Solids, total suspendedMX 7D AV <= 30 mg/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Cadmium, total [as Cd]30DA AVG report only Jun, Jul
006Cadmium, total [as Cd]30DA AVG report only Aug, Sep
006Cadmium, total [as Cd]30DA AVG <= 50 ug/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Cadmium, total [as Cd]DAILY MX <= 100 ug/L Jun, Jul
006Cadmium, total [as Cd]DAILY MX <= 100 ug/L Aug, Sep
006Cadmium, total [as Cd]DAILY MX <= 100 ug/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Lead, total [as Pb]30DA AVG report only Jun, Jul
006Lead, total [as Pb]30DA AVG <= 300 ug/L Aug, Sep
006Lead, total [as Pb]30DA AVG <= 300 ug/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Lead, total [as Pb]DAILY MX <= 600 ug/L Jun, Jul
006Lead, total [as Pb]DAILY MX <= 600 ug/L Aug, Sep
006Lead, total [as Pb]DAILY MX <= 600 ug/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Zinc, total [as Zn]30DA AVG <= 750 ug/L Jun, Jul
006Zinc, total [as Zn]30DA AVG report only Aug, Sep
006Zinc, total [as Zn]30DA AVG <= 750 ug/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Zinc, total [as Zn]DAILY MX <= 1500 ug/L Jun, Jul
006Zinc, total [as Zn]DAILY MX <= 1500 ug/L Aug, Sep
006Zinc, total [as Zn]DAILY MX <= 1500 ug/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Molybdenum, total recoverable30DA AVG report only Jun, Jul
006Molybdenum, total recoverable30DA AVG report only Aug, Sep
006Molybdenum, total recoverable30DA AVG report only Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Molybdenum, total recoverableDAILY MX report only Jun, Jul
006Molybdenum, total recoverableDAILY MX report only Aug, Sep
006Molybdenum, total recoverableDAILY MX report only Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Zinc, potentially dissolved30DA AVG report only Jun, Jul
006Zinc, potentially dissolved30DA AVG <= 234 ug/L Aug, Sep
006Zinc, potentially dissolved30DA AVG report only Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Zinc, potentially dissolvedDAILY MX report only Jun, Jul
006Zinc, potentially dissolvedDAILY MX report only Aug, Sep
006Zinc, potentially dissolvedDAILY MX report only Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Silver, potentially dissolved30DA AVG <= .04 ug/L Jun, Jul
006Silver, potentially dissolved30DA AVG <= .12 ug/L Aug, Sep
006Silver, potentially dissolved30DA AVG report only Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Silver, potentially dissolvedDAILY MX report only Jun, Jul
006Silver, potentially dissolvedDAILY MX report only Aug, Sep
006Silver, potentially dissolvedDAILY MX report only Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Copper, potentially dissolved30DA AVG <= 8.6 ug/L Jun, Jul
006Copper, potentially dissolved30DA AVG <= 16 ug/L Aug, Sep
006Copper, potentially dissolved30DA AVG <= 28 ug/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Copper, potentially dissolved30DA AVG <= 23 ug/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Copper, potentially dissolved30DA AVG <= 7.8 ug/L Jun, Jul
006Copper, potentially dissolved30DA AVG report only Aug, Sep
006Copper, potentially dissolvedDAILY MX <= 13 ug/L Jun, Jul
006Copper, potentially dissolvedDAILY MX <= 25 ug/L Aug, Sep
006Copper, potentially dissolvedDAILY MX <= 44 ug/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Copper, potentially dissolvedDAILY MX <= 34 ug/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Copper, potentially dissolvedDAILY MX <= 12 ug/L Jun, Jul
006Copper, potentially dissolvedDAILY MX <= 23 ug/L Aug, Sep
006Cadmium, potentially dissolvd30DA AVG <= 3.2 ug/L Jun, Jul
006Cadmium, potentially dissolvd30DA AVG <= 4.7 ug/L Aug, Sep
006Cadmium, potentially dissolvd30DA AVG report only Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Cadmium, potentially dissolvd30DA AVG <= .25 ug/L Jun, Jul
006Cadmium, potentially dissolvd30DA AVG <= .58 ug/L Aug, Sep
006Cadmium, potentially dissolvdDAILY MX <= 3.5 ug/L Jun, Jul
006Cadmium, potentially dissolvdDAILY MX <= 7.1 ug/L Aug, Sep
006Cadmium, potentially dissolvdDAILY MX report only Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Cadmium, potentially dissolvdDAILY MX report only Jun, Jul
006Cadmium, potentially dissolvdDAILY MX report only Aug, Sep
006Lead, potentially dissolvd30DA AVG <= 2.6 ug/L Jun, Jul
006Lead, potentially dissolvd30DA AVG report only Aug, Sep
006Lead, potentially dissolvd30DA AVG report only Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Lead, potentially dissolvd30DA AVG <= 2.1 ug/L Jun, Jul
006Lead, potentially dissolvdDAILY MX <= 67 ug/L Jun, Jul
006Lead, potentially dissolvdDAILY MX report only Aug, Sep
006Lead, potentially dissolvdDAILY MX report only Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Lead, potentially dissolvdDAILY MX report only Jun, Jul
006Manganese, potentially dissolvd30DA AVG report only Jun, Jul
006Manganese, potentially dissolvd30DA AVG report only Aug, Sep
006Manganese, potentially dissolvd30DA AVG report only Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Manganese, potentially dissolvdDAILY MX report only Jun, Jul
006Manganese, potentially dissolvdDAILY MX report only Aug, Sep
006Manganese, potentially dissolvdDAILY MX report only Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Oil and greaseINST MAX <= 10 mg/L Jun, Jul
006Oil and greaseINST MAX <= 10 mg/L Aug, Sep
006Oil and greaseINST MAX <= 10 mg/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Flow, in conduit or thru treatment plant30DA AVG <= 4.2 MGD Jun, Jul
006Flow, in conduit or thru treatment plant30DA AVG <= 3.5 MGD Aug, Sep
006Flow, in conduit or thru treatment plant30DA AVG <= 3.3 MGD Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Flow, in conduit or thru treatment plantDAILY MX report only Jun, Jul
006Flow, in conduit or thru treatment plantDAILY MX report only Aug, Sep
006Flow, in conduit or thru treatment plantDAILY MX report only Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Chlorine, total residual30DA AVG report only Jun, Jul
006Chlorine, total residual30DA AVG report only Aug, Sep
006Chlorine, total residual30DA AVG report only Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Chlorine, total residual30DA AVG <= .013 mg/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Chlorine, total residual30DA AVG <= .016 mg/L Jun, Jul
006Chlorine, total residual30DA AVG <= .015 mg/L Aug, Sep
006Chlorine, total residualDAILY MX report only Jun, Jul
006Chlorine, total residualDAILY MX report only Aug, Sep
006Chlorine, total residualDAILY MX report only Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Chlorine, total residualDAILY MX <= .022 mg/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Chlorine, total residualDAILY MX <= .027 mg/L Jun, Jul
006Chlorine, total residualDAILY MX <= .025 mg/L Aug, Sep
006Mercury, total [as Hg]30DA AVG <= 1 ug/L Jun, Jul
006Mercury, total [as Hg]30DA AVG <= 1 ug/L Aug, Sep
006Mercury, total [as Hg]30DA AVG <= 1 ug/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Mercury, total [as Hg]DAILY MX <= 2 ug/L Jun, Jul
006Mercury, total [as Hg]DAILY MX <= 2 ug/L Aug, Sep
006Mercury, total [as Hg]DAILY MX <= 2 ug/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Oil and grease visualINST MAX report only Jun, Jul
006Oil and grease visualINST MAX report only Aug, Sep
006Oil and grease visualINST MAX report only Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Static Renewal 7 Day Chronic Ceriodaphnia dubiaSINGSAMP report only Jan, Feb, Mar, Apr, May, Aug, Sep, Oct, Nov, Dec
006Static Renewal 7 Day Chronic Ceriodaphnia dubiaSINGSAMP report only Jul
006Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE report only Jan, Feb, Mar, Apr, May, Aug, Sep, Oct, Nov, Dec
006Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE report only Jul
006Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE report only Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE report only Aug, Sep
006Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE report only Jul
006Static Renewal 7 Day Chronic Pimephales promelasSINGSAMP report only Jan, Feb, Mar, Apr, May, Aug, Sep, Oct, Nov, Dec
006Static Renewal 7 Day Chronic Pimephales promelasSINGSAMP report only Jul
006Static Renewal 7 Day Chronic Pimephales promelasMN VALUE report only Jan, Feb, Mar, Apr, May, Aug, Sep, Oct, Nov, Dec
006Static Renewal 7 Day Chronic Pimephales promelasMN VALUE report only Jul
006Static Renewal 7 Day Chronic Pimephales promelasMN VALUE >= 84 tox chronic Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
006Static Renewal 7 Day Chronic Pimephales promelasMN VALUE >= 75 tox chronic Aug, Sep
006Static Renewal 7 Day Chronic Pimephales promelasMN VALUE >= 69 tox chronic Jul
007BOD, 5-day, 20 deg. C30DA AVG <= 30 mg/L all year
007BOD, 5-day, 20 deg. C30DA AVG <= 30 mg/L all year
007BOD, 5-day, 20 deg. CMX 7D AV <= 45 mg/L all year
007BOD, 5-day, 20 deg. CMX 7D AV <= 45 mg/L all year
007pHMINIMUM >= 6.5 SU all year
007pHMAXIMUM <= 9 SU all year
007Flow, in conduit or thru treatment plant30DA AVG report only all year
007Flow, in conduit or thru treatment plant30DA AVG <= .04 MGD all year
007Flow, in conduit or thru treatment plantDAILY MX report only all year
007Flow, in conduit or thru treatment plantDAILY MX report only all year
007Chlorine, total residualINST MAX <= .5 mg/L all year
007E. coli30DA GM <= 1810 #/100mL all year
007E. coliMX 7D GM <= 3619 #/100mL 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