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General Shale Brick, Inc.

Clay And Related Minerals, Corunna, Michigan. NPDES permit MI0047333, in force until Oct 1, 2030. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 21 days after each period: outfall 002 form A monthly (10 values), outfall 005 form A monthly (10 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 24 reports late

Limits in force (20)

ParameterStatisticLimitMonthsOutfall
pHdaily minimum≥ 6.5 SUall year002
pHdaily maximum≤ 9 SUall year002
Solids, total suspendedmonthly average≤ 20 mg/Lall year002
Solids, total suspendeddaily maximum≤ 30 mg/Lall year002
Chloride [as Cl]daily maximumreport only (mg/L)all year002
Sulfate, total [as SO4]daily maximumreport only (mg/L)all year002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
Solids, total dissolveddaily maximumreport only (mg/L)all year002
Outfall observation,visual, y/n responsevaluereport only (N=0;Y=1)all year002
pHdaily minimum≥ 6.5 SUall year005
pHdaily maximum≤ 9 SUall year005
Solids, total suspendedmonthly average≤ 20 mg/Lall year005
Solids, total suspendeddaily maximum≤ 30 mg/Lall year005
Chloride [as Cl]daily maximumreport only (mg/L)all year005
Sulfate, total [as SO4]daily maximumreport only (mg/L)all year005
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year005
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year005
Solids, total dissolveddaily maximumreport only (mg/L)all year005
Outfall observation,visual, y/n responsevaluereport only (N=0;Y=1)all year005

How strict are these limits?

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

Same industry: the 17 Mining and Quarrying of Nonmetallic Minerals permits in Michigan.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MI0047333 · MCP: https://passage-data.com/mcp