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The Doe Run Resources Corporation

Primary Nonferrous Metals, major discharger, Herculaneum, Missouri. NPDES permit MO0000281, in force until Aug 31, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form M monthly (16 values), outfall 001 form Q quarterly (2 values), outfall 004 form Q quarterly (8 values)
Renewal application due
Mar 4, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
2 values over a limit, 0 required values missing, 0 of 20 reports late

Limits in force (26)

ParameterStatisticLimitMonthsOutfall
pHminimum≥ 6.5 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendeddaily maximumreport only (mg/L)all year001
Solids, total suspendedmonthly averagereport only (mg/L)all year001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]monthly averagereport only (mg/L)all year001
Arsenic, total recoverabledaily maximumreport only (ug/L)all year001
Arsenic, total recoverablemonthly averagereport only (ug/L)all year001
Zinc, total recoverabledaily maximumreport only (ug/L)all year001
Zinc, total recoverablemonthly averagereport only (ug/L)all year001
Cadmium, total recoverabledaily maximum≤ 118.1 ug/Lall year001
Cadmium, total recoverablemonthly average≤ 45.7 ug/Lall year001
Lead, total recoverabledaily maximumreport only (ug/L)all year001
Lead, total recoverablemonthly averagereport only (ug/L)all year001
Copper, total recoverabledaily maximumreport only (ug/L)all year001
Copper, total recoverablemonthly averagereport only (ug/L)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
pHminimum≥ 6.5 SUall year004
pHmaximum≤ 9 SUall year004
Solids, total suspendeddaily maximumreport only (mg/L)all year004
Zinc, total recoverabledaily maximumreport only (ug/L)all year004
Cadmium, total recoverabledaily maximumreport only (ug/L)all year004
Lead, total recoverabledaily maximumreport only (ug/L)all year004
Copper, total recoverabledaily maximumreport only (ug/L)all year004
Storm water flowdaily maximumreport only (MGD)all year004

How strict are these limits?

Cited limits by parameter: Missouri's rules and the federal ones.

Same industry: the 5 Primary Metal Industries permits in Missouri.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MO0000281 · MCP: https://passage-data.com/mcp