The Doe Run Resources Corp

NPDES permit MO0002003 · Major NON-POTW · administratively continued, expires 2025-06-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2025-06-30 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 20 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 (39)

OutfallParameterStatisticLimitMonths
001BOD, 5-day, 20 deg. CDAILY MX <= 65 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 45 mg/L all year
001pHMINIMUM >= 6 SU all year
001Solids, total suspendedDAILY MX <= 120 mg/L all year
001Solids, total suspendedMO AVG <= 80 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
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
002Nitrogen, ammonia total [as N]DAILY MX report only all year
002Hardness, total [as CaCO3]DAILY MX report only all year
002Hardness, total [as CaCO3]MO AVG report only all year
002Sulfate, total [as SO4]DAILY MX report only all year
002Arsenic, total recoverableDAILY MX report only all year
002Arsenic, total recoverableMO AVG report only all year
002Nickel, total recoverableDAILY MX report only all year
002Nickel, total recoverableMO AVG report only all year
002Zinc, total recoverableDAILY MX <= 1500 ug/L all year
002Zinc, total recoverableMO AVG <= 750 ug/L all year
002Cadmium, total recoverableDAILY MX <= 100 ug/L all year
002Cadmium, total recoverableMO AVG <= 50 ug/L all year
002Lead, total recoverableDAILY MX <= 67.4 ug/L all year
002Lead, total recoverableMO AVG <= 28.9 ug/L all year
002Copper, total recoverableDAILY MX <= 300 ug/L all year
002Copper, total recoverableMO AVG <= 150 ug/L all year
002Antimony, total recoverableDAILY MX report only all year
002Antimony, total recoverableMO AVG report only all year
002ChlorideDAILY MX report only 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 dubiaVALUE <= 1.8 toxic all year
002Toxicity [chronic], Pimephales promelas [Fathead Minnow]VALUE <= 1.8 toxic all year
002Mercury, total recoverableDAILY MX <= 2 ug/L all year
002Mercury, total recoverableMO AVG <= 1 ug/L all year
002Precipitation volumeDAILY MX report only all year
002Precipitation volumeMO AVG report only all year
002Chlorides + SulfatesDAILY MX <= 1000 mg/L 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