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Saint-Gobain North America, CertainTeed Ceilings Corporation

Mineral Wool, L'anse, Michigan. NPDES permit MI0057004, in force until Oct 1, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 21 days after each period: form A monthly (9 values)
Renewal application due
Apr 4, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (10)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year
pHdaily minimum≥ 6.5 SUall year
pHdaily maximum≤ 9 SUall year
Oil & Greasedaily maximumreport only (mg/L)Jan, Apr, Jul, Oct
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Outfall observation,visual, y/n responsevaluereport only (N=0;Y=1)all year

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

Same industry: the 7 Stone, Clay, Glass and Concrete Products permits in Michigan.

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/MI0057004 · MCP: https://passage-data.com/mcp