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Holcim (US) Inc.

Cement, Hydraulic, Hagerstown, Maryland. NPDES permit MD0002151, in force until Feb 29, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 003 form A quarterly (7 values), outfall 004 form A quarterly (9 values), outfall 005 form A quarterly (7 values), outfall 006 form A quarterly (7 values), outfall 008 form A quarterly (9 values), outfall 010 form A quarterly (16 values)
Renewal application due
Sep 2, 2027 · 180 days before expiry; your permit may set another date
Last report on file
June 2026
Oct 2024 – Sep 2025
2 values over a limit, 0 required values missing, 0 of 72 reports late

Limits in force (55)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)Jun–Sep003
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)Jun–Sep003
pHminimum≥ 6.5 SUall year003
pHmaximum≤ 8.5 SUall year003
Temp. diff. between up/down stream deg. Fdaily maximum≤ 0 deg FJun–Sep003
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year003
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year003
pHminimum≥ 6.5 SUall year004
pHmaximum≤ 8.5 SUall year004
Solids, total suspendedmonthly average≤ 15 mg/Lall year004
Solids, total suspendeddaily maximum≤ 31 mg/Lall year004
Solids, total suspendedmonthly average≤ 538 lb/dall year004
Solids, total suspendeddaily maximum≤ 1112 lb/dall year004
Solids, settleabledaily maximum≤ .5 mg/Lall year004
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year004
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year004
Temperature, water deg. fahrenheitdaily maximum≤ 0 deg FJun–Sep005
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)Jun–Sep005
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)Jun–Sep005
pHminimum≥ 6.5 SUall year005
pHmaximum≤ 8.5 SUall year005
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year005
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year005
Temperature, water deg. fahrenheitdaily maximum≤ 0 deg FJun–Sep006
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)Jun–Sep006
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)Jun–Sep006
pHminimum≥ 6.5 SUall year006
pHmaximum≤ 8.5 SUall year006
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year006
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year006
pHminimum≥ 6 SUall year008
pHmaximum≤ 8.5 SUall year008
Solids, total suspendedmonthly average≤ 15 mg/Lall year008
Solids, total suspendeddaily maximum≤ 31 mg/Lall year008
Solids, total suspendedmonthly average≤ 538 lb/dall year008
Solids, total suspendeddaily maximum≤ 1112 lb/dall year008
Solids, settleabledaily maximum≤ .5 mg/Lall year008
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year008
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year008
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/Lall year010
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 30 mg/Lall year010
BOD, 5-day, 20 deg. Cdaily maximum≤ 45 mg/Lall year010
BOD, 5-day, 20 deg. Cmaximum monthly average≤ .5 lb/dall year010
BOD, 5-day, 20 deg. Cdaily maximum≤ .75 lb/dall year010
pHminimum≥ 6.5 SUall year010
pHmaximum≤ 8.5 SUall year010
Solids, total suspendedmaximum monthly average≤ 30 mg/Lall year010
Solids, total suspendeddaily maximum≤ 45 mg/Lall year010
Solids, total suspendedmaximum monthly average≤ .5 lb/dall year010
Solids, total suspendeddaily maximum≤ .75 lb/dall year010
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year010
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year010
Chlorine, total residualmonthly average≤ .1 mg/Lall year010
Chlorine, total residualdaily maximum≤ .1 mg/Lall year010
E. colimonthly geometric mean≤ 126 MPN/100mLall year010

How strict are these limits?

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

Same industry: the 3 Stone, Clay, Glass and Concrete Products permits in Maryland.

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Your permit document is the final word. As JSON: /api/v1/permits/MD0002151 · MCP: https://passage-data.com/mcp