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Heidelberg Materials US Cement LLC

Industrial or other facility, Oley, Pennsylvania. NPDES permit PA0594954, in force until Nov 9, 2030. Last 12 months: no values over a limit, 30 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A quarterly
Last report on file
March 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 6 of 12 reports late

Limits in force (20)

ParameterStatisticLimitMonths
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous maximum≤ 9 SUall year
pHinstantaneous maximum≤ 9 SUall year
Alkalinity, total [as CaCO3]instantaneous maximumreport only (mg/L)all year
Alkalinity, total [as CaCO3]instantaneous maximumreport only (mg/L)all year
Acidity, total [as CaCO3]instantaneous maximumreport only (mg/L)all year
Acidity, total [as CaCO3]instantaneous maximumreport only (mg/L)all year
Solids, total suspendedmonthly average≤ 35 mg/Lall year
Solids, total suspendedmonthly average≤ 35 mg/Lall year
Solids, total suspendeddaily maximum≤ 70 mg/Lall year
Solids, total suspendeddaily maximum≤ 70 mg/Lall year
Solids, total suspendedinstantaneous maximum≤ 90 mg/Lall year
Solids, total suspendedinstantaneous maximum≤ 90 mg/Lall year
Flow, in conduit or thru treatment plantmonthly average≤ 2.16 MGDall year
Flow, in conduit or thru treatment plantmonthly average≤ 2.16 MGDall year
Flow, in conduit or thru treatment plantdaily maximum≤ 2.88 MGDall year
Flow, in conduit or thru treatment plantdaily maximum≤ 2.88 MGDall year
Alkalinity - Acidity [as CaCO3]instantaneous minimum≥ 0 mg/Lall year
Alkalinity - Acidity [as CaCO3]instantaneous minimum≥ 0 mg/Lall year

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/PA0594954 · MCP: https://passage-data.com/mcp