THE DOE RUN RESOURCES CORPORATION

NPDES permit MO0100226 · Major NON-POTW · effective, expires 2030-10-31 · 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.

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

0values over a limit
0required values missing, on 0 form(s)
0of 45 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 MO permits in EPA's filings — check your permit).

Limits in force (42)

OutfallParameterStatisticLimitMonths
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedDAILY MX <= 30 mg/L all year
001Solids, total suspendedMO AVG <= 20 mg/L all year
001Nickel, total recoverableDAILY MX <= 113.9 ug/L all year
001Nickel, total recoverableMO AVG <= 59.8 ug/L all year
001Zinc, total recoverableDAILY MX <= 159.7 ug/L all year
001Zinc, total recoverableMO AVG <= 79.6 ug/L all year
001Cadmium, total recoverableDAILY MX <= .6 ug/L all year
001Cadmium, total recoverableMO AVG <= .3 ug/L all year
001Lead, total recoverableDAILY MX <= 8 ug/L all year
001Lead, total recoverableMO AVG <= 4 ug/L all year
001Copper, total recoverableDAILY MX <= 19.2 ug/L all year
001Copper, total recoverableMO AVG <= 9.6 ug/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
001Toxicity [chronic], Ceriodaphnia dubiaDAILY MX <= 1.6 toxic all year
001Toxicity [chronic], Pimephales promelas [Fathead Minnow]DAILY MX <= 1.6 toxic all year
001Mercury, total recoverableDAILY MX <= 2 ug/L all year
001Mercury, total recoverableMO AVG <= 1 ug/L 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
003Nickel, total recoverableDAILY MX <= 113.9 ug/L all year
003Nickel, total recoverableMO AVG <= 59.8 ug/L all year
003Zinc, total recoverableDAILY MX <= 159.7 ug/L all year
003Zinc, total recoverableMO AVG <= 79.6 ug/L all year
003Cadmium, total recoverableDAILY MX <= .6 ug/L all year
003Cadmium, total recoverableMO AVG <= .3 ug/L all year
003Lead, total recoverableDAILY MX <= 8 ug/L all year
003Lead, total recoverableMO AVG <= 4 ug/L all year
003Copper, total recoverableDAILY MX <= 19.2 ug/L all year
003Copper, total recoverableMO AVG <= 9.6 ug/L 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
003Toxicity [chronic], Ceriodaphnia dubiaDAILY MX <= 1.6 toxic all year
003Toxicity [chronic], Pimephales promelas [Fathead Minnow]DAILY MX <= 1.6 toxic all year
003Mercury, total recoverableDAILY MX <= 2 ug/L all year
003Mercury, total recoverableMO AVG <= 1 ug/L all year
005FreeboardDAILY MX report only all year
005FreeboardMO AVG 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