The Doe Run Resources Corp

NPDES permit MO0001881 · Major NON-POTW · effective, expires 2030-10-31 · 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

2values over a limit
0required values missing, on 0 form(s)
0of 25 forms filed late

Last period with anything received: 2026-07-31. Most often over: Zinc, total recoverable (2).

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 (30)

OutfallParameterStatisticLimitMonths
002pHMINIMUM >= 6.5 SU all year
002pHMAXIMUM <= 9 SU all year
002Solids, total suspendedDAILY MX <= 30 mg/L all year
002Solids, total suspendedMO AVG <= 20 mg/L all year
002Cobalt, total recoverableDAILY MX report only all year
002Cobalt, total recoverableMO AVG report only all year
002Iron, total recoverableDAILY MX report only all year
002Iron, total recoverableMO AVG report only all year
002Zinc, total recoverableDAILY MX <= 272 ug/L all year
002Zinc, total recoverableMO AVG <= 128.5 ug/L all year
002Cadmium, total recoverableDAILY MX <= 2 ug/L all year
002Cadmium, total recoverableMO AVG <= 1 ug/L all year
002Lead, total recoverableDAILY MX <= 28 ug/L all year
002Lead, total recoverableMO AVG <= 13.9 ug/L all year
002Copper, total recoverableDAILY MX <= 34.3 ug/L all year
002Copper, total recoverableMO AVG <= 21.1 ug/L all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Toxicity [chronic], Ceriodaphnia dubiaDAILY MX <= 1.6 toxic all year
002Toxicity [chronic], Pimephales promelas [Fathead Minnow]DAILY MX <= 1.6 toxic all year
002Mercury, total [as Hg]DAILY MX <= 2 ug/L all year
002Mercury, total [as Hg]MO AVG <= 1 ug/L all year
015pHDAILY MX report only all year
015Solids, total suspendedDAILY MX report only all year
015Zinc, total recoverableDAILY MX report only all year
015Cadmium, total recoverableDAILY MX report only all year
015Lead, total recoverableDAILY MX report only all year
015Copper, total recoverableDAILY MX report only all year
015RainfallDAILY MX report only all year
015Mercury, total [as Hg]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