The Doe Run Company

NPDES permit MO0001848 · 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 16 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 (26)

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
001Cyanide, free [amenable to chlorination]DAILY MX report only all year
001Cyanide, free [amenable to chlorination]MO AVG report only all year
001Chloride [as Cl]DAILY MX report only all year
001Chloride [as Cl]MO AVG report only all year
001Sulfate, total [as SO4]DAILY MX report only all year
001Sulfate, total [as SO4]MO AVG report only all year
001Zinc, total recoverableDAILY MX <= 406 ug/L all year
001Zinc, total recoverableMO AVG <= 211 ug/L all year
001Cadmium, total recoverableDAILY MX <= 4.5 ug/L all year
001Cadmium, total recoverableMO AVG <= 2.1 ug/L all year
001Lead, total recoverableDAILY MX <= 29.5 ug/L all year
001Lead, total recoverableMO AVG <= 10.7 ug/L all year
001Copper, total recoverableDAILY MX <= 81 ug/L all year
001Copper, total recoverableMO AVG <= 30.9 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 dubiaVALUE <= 1.6 toxic all year
001Toxicity [chronic], Pimephales promelas [Fathead Minnow]VALUE <= 1.6 toxic all year
001Mercury, total [as Hg]DAILY MX <= 2 ug/L all year
001Mercury, total [as Hg]MO AVG <= 1 ug/L all year
001Chlorides + SulfatesDAILY MX report only all year
001Chlorides + SulfatesMO 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