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Cliffs Erie LLC

Iron Ores, Schroeder, Minnesota. NPDES permit MN0067962, in force until Mar 31, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 47 days after each period: form A1 quarterly (12 values)
Renewal application due
Oct 3, 2027 · 180 days before expiry; your permit may set another date
Last report on file
June 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 4 reports late

Limits in force (12)

ParameterStatisticLimitMonths
Specific conductancequarterly averagereport only (umho/cm)all year
pHquarterly minimumreport only (SU)all year
pHquarterly maximumreport only (SU)all year
Solids, total suspendedquarterly averagereport only (mg/L)all year
Sulfate, total [as SO4]quarterly averagereport only (mg/L)all year
Boron, total [as B]quarterly averagereport only (ug/L)all year
Iron, dissolved [as Fe]quarterly averagereport only (mg/L)all year
Flow, in conduit or thru treatment plantquarterly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantquarterly maximumreport only (MGD)all year
Flow, in conduit or thru treatment plantquarterly totalreport only (Mgal/mo)all year
Solids, total dissolvedquarterly averagereport only (mg/L)all year
Duration of dischargemonthly totalreport only (d/mo)all year

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

Same industry: the 7 Metal Mining permits in Minnesota.

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/MN0067962 · MCP: https://passage-data.com/mcp