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CertainTeed Corp

Asphalt Felts And Coatings, Milan, Ohio. NPDES permit OH0000345 expired Oct 31, 2026. Last 12 months: over a limit 3 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 004 form A monthly (7 values), outfall 005 form A monthly (10 values), outfall 601 form A monthly (6 values), outfall 602 form A monthly (4 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 49 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingOutfallParameterReportedLimitOver by
July 2026005Solids, total suspended, daily maximum54≤ 45 mg/L20%
July 2026005Solids, total suspended, monthly average54≤ 30 mg/L80%
August 2026004Chlorine, total residual, daily maximum.22≤ .019 mg/L1058%

Limits in force (37)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]daily minimum≥ 5 mg/LMar, Jun, Aug, Dec004
pHdaily minimum≥ 6.5 SUall year004
pHdaily maximum≤ 9 SUall year004
Solids, total suspendedmonthly average≤ 30 mg/Lall year004
Solids, total suspendeddaily maximum≤ 45 mg/Lall year004
Oil and grease, hexane extr methoddaily maximum≤ 10 mg/Lall year004
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/LMar, Jun, Aug, Dec004
Nitrogen, ammonia total [as N]daily maximum≤ 3 mg/LMar, Jun, Aug, Dec004
E. coli, MTEC-MFmonthly geometric mean≤ 126 MPN/100mLJun, Aug004
E. coli, MTEC-MFdaily maximum≤ 284 MPN/100mLJun, Aug004
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year004
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year004
Chlorine, total residualdaily maximum≤ .019 mg/LJun, Aug004
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LMar, Jun, Aug, Dec004
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 15 mg/LMar, Jun, Aug, Dec004
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year005
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year005
pHdaily minimum≥ 6.5 SUall year005
pHdaily maximum≤ 9 SUall year005
Solids, total suspendedmonthly average≤ 30 mg/Lall year005
Solids, total suspendeddaily maximum≤ 45 mg/Lall year005
Oil and grease, hexane extr methoddaily maximum≤ 10 mg/Lall 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
Chlorine, total residualdaily maximumreport only (mg/L)all year005
Sludge waste from secondary clarifiersmonthly averagereport only (gal)Dec588
Sludge waste from secondary clarifiersdaily maximumreport only (gal)Dec588
pHdaily minimum≥ 6.5 SUall year601
pHdaily maximum≤ 9 SUall year601
Solids, total suspendedmonthly average≤ 60.45 kg/dall year601
Solids, total suspendeddaily maximum≤ 89.1 kg/dall year601
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year601
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year601
Flow ratemonthly averagereport only (gal/d)all year602
Flow ratedaily maximumreport only (gal/d)all year602
Turbidity [severity]monthly averagereport only (severity)all year602
Turbidity [severity]daily maximumreport only (severity)all year602

How strict are these limits?

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

Same industry: the 15 Petroleum Refining and Related Industries permits in Ohio.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/OH0000345 · MCP: https://passage-data.com/mcp