Doe Run Company

NPDES permit MO0001121 · Major NON-POTW · effective, expires 2026-09-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file

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

3values over a limit
0required values missing, on 0 form(s)
0of 31 forms filed late

Last period with anything received: 2026-07-31. Most often over: Cadmium, total recoverable (1), Lead, total recoverable (1), Copper, total recoverable (1).

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 (62)

OutfallParameterStatisticLimitMonths
001BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedDAILY MX <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
003pHMINIMUM >= 6.5 SU all year
003pHMAXIMUM <= 9 SU all year
003Solids, total suspendedDAILY MX <= 30 mg/L all year
003Solids, total suspendedMO AVG <= 20 mg/L all year
003Nitrogen, ammonia total [as N]DAILY MX report only all year
003Nitrogen, ammonia total [as N]MO AVG report only all year
003Hardness, total [as CaCO3]DAILY MX report only all year
003Hardness, total [as CaCO3]MO AVG report only all year
003Sulfate, total [as SO4]DAILY MX report only all year
003Sulfate, total [as SO4]MO AVG report only all year
003Selenium, total recoverableDAILY MX <= 8.8 ug/L all year
003Selenium, total recoverableMO AVG <= 2.9 ug/L all year
003Thallium, total recoverableDAILY MX <= 14.1 ug/L all year
003Thallium, total recoverableMO AVG <= 6.3 ug/L all year
003Zinc, total recoverableDAILY MX <= 405.9 ug/L all year
003Zinc, total recoverableMO AVG <= 202.3 ug/L all year
003Cadmium, total recoverableDAILY MX <= 2.75 ug/L all year
003Cadmium, total recoverableMO AVG <= 1 ug/L all year
003Lead, total recoverableDAILY MX <= 20.8 ug/L all year
003Lead, total recoverableMO AVG <= 10.4 ug/L all year
003Copper, total recoverableDAILY MX <= 32.2 ug/L all year
003Copper, total recoverableMO AVG <= 10.5 ug/L all year
003ChlorideDAILY MX report only all year
003ChlorideMO AVG report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
003Flow, in conduit or thru treatment plantMO AVG report only all year
003Chlorine, total residualDAILY MX <= 18.8 ug/L Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
003Chlorine, total residualMO AVG <= 6 ug/L Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
003E. coliDAILY MX <= 630 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
003E. coli30DA GM <= 126 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
003Toxicity [acute], Ceriodaphnia dubiaVALUE <= .3 toxic all year
003Toxicity [chronic], Ceriodaphnia dubiaVALUE <= 1.7 toxic all year
003Toxicity [acute], Pimephales promelas [Fathead Minnow]VALUE <= .3 toxic all year
003Toxicity [chronic], Pimephales promelas [Fathead Minnow]VALUE <= 1.7 toxic all year
003Mercury, total recoverableDAILY MX <= 2 ug/kg all year
003Mercury, total recoverableMO AVG <= 1 ug/kg all year
003Chlorides + SulfatesDAILY MX <= 1000 mg/L all year
006Sulfate [as S]DAILY MX report only all year
006pHMINIMUM >= 6.5 SU all year
006pHMAXIMUM <= 9 SU all year
006Solids, total suspendedDAILY MX report only all year
006Nitrogen, ammonia total [as N]DAILY MX report only all year
006Selenium, total recoverableDAILY MX report only all year
006Thallium, total recoverableDAILY MX report only all year
006Zinc, total recoverableDAILY MX report only all year
006Cadmium, total recoverableDAILY MX <= 11.7 ug/L all year
006Lead, total recoverableDAILY MX <= 373 ug/L all year
006Copper, total recoverableDAILY MX <= 32.2 ug/L all year
006ChlorideDAILY MX report only all year
006Flow, in conduit or thru treatment plantDAILY MX report only all year
006Chlorine, total residualDAILY MX <= 19 ug/L all year
006Mercury, total recoverableDAILY MX report only all year
006Precipitation volumeDAILY MX report only all year
006Chlorides + SulfatesDAILY 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