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Collier Stone Co

Industrial or other facility, Carnegie, Pennsylvania. NPDES permit PA0589853, in force until Nov 13, 2030. Last 12 months: over a limit 13 times (last February 2026), 189 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A quarterly, outfall 002 form A quarterly, outfall 003 form A quarterly
Last report on file
March 2026
Oct 2024 – Sep 2025
5 values over a limit, 567 required values missing, 0 of 36 reports late

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

All 13 values over a limit
Period endingParameterReportedLimitOver by
October 2025Aluminum, total [as Al], daily maximum1.04 mg/L≤ .75 mg/L39%
October 2025Aluminum, total [as Al], instantaneous maximum1.04 mg/L≤ .75 mg/L39%
November 2025Aluminum, total [as Al], daily maximum.83 mg/L≤ .75 mg/L11%
November 2025Aluminum, total [as Al], instantaneous maximum.83 mg/L≤ .75 mg/L11%
February 2026Aluminum, total [as Al], daily maximum6.53 mg/L≤ .75 mg/L771%
February 2026Aluminum, total [as Al], instantaneous maximum6.53 mg/L≤ .75 mg/L771%
February 2026Aluminum, total [as Al], monthly average5.08 mg/L≤ .75 mg/L577%
February 2026Iron, total [as Fe], daily maximum4.42 mg/L≤ 3 mg/L47%
February 2026Iron, total [as Fe], instantaneous maximum4.42 mg/L≤ 3.7 mg/L19%
February 2026Iron, total [as Fe], monthly average3.895 mg/L≤ 1.5 mg/L160%
February 2026Solids, total suspended, daily maximum235 mg/L≤ 70 mg/L236%
February 2026Solids, total suspended, instantaneous maximum235 mg/L≤ 90 mg/L161%
February 2026Solids, total suspended, monthly average140.5 mg/L≤ 35 mg/L301%

Limits in force (126)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigradeinstantaneous maximumreport only (deg C)all year001
Temperature, water deg. centigradeinstantaneous maximumreport only (deg C)all year001
Conductivityinstantaneous maximumreport only (umho/cm)all year001
Conductivityinstantaneous maximumreport only (umho/cm)all year001
pHinstantaneous minimum≥ 6 SUall year001
pHinstantaneous minimum≥ 6 SUall year001
pHinstantaneous maximum≤ 9 SUall year001
pHinstantaneous maximum≤ 9 SUall year001
Alkalinity, total [as CaCO3]instantaneous maximumreport only (mg/L)all year001
Alkalinity, total [as CaCO3]instantaneous maximumreport only (mg/L)all year001
Acidity, total [as CaCO3]instantaneous maximumreport only (mg/L)all year001
Acidity, total [as CaCO3]instantaneous maximumreport only (mg/L)all year001
Solids, total suspendedmonthly average≤ 35 mg/Lall year001
Solids, total suspendedmonthly average≤ 35 mg/Lall year001
Solids, total suspendeddaily maximum≤ 70 mg/Lall year001
Solids, total suspendeddaily maximum≤ 70 mg/Lall year001
Solids, total suspendedinstantaneous maximum≤ 90 mg/Lall year001
Solids, total suspendedinstantaneous maximum≤ 90 mg/Lall year001
Sulfate, total [as SO4]instantaneous maximumreport only (mg/L)all year001
Sulfate, total [as SO4]instantaneous maximumreport only (mg/L)all year001
Iron, total [as Fe]monthly average≤ 1.5 mg/Lall year001
Iron, total [as Fe]monthly average≤ 1.5 mg/Lall year001
Iron, total [as Fe]daily maximum≤ 3 mg/Lall year001
Iron, total [as Fe]daily maximum≤ 3 mg/Lall year001
Iron, total [as Fe]instantaneous maximum≤ 3.7 mg/Lall year001
Iron, total [as Fe]instantaneous maximum≤ 3.7 mg/Lall year001
Manganese, total [as Mn]monthly average≤ 1 mg/Lall year001
Manganese, total [as Mn]monthly average≤ 1 mg/Lall year001
Manganese, total [as Mn]daily maximum≤ 2 mg/Lall year001
Manganese, total [as Mn]daily maximum≤ 2 mg/Lall year001
Manganese, total [as Mn]instantaneous maximum≤ 2.5 mg/Lall year001
Manganese, total [as Mn]instantaneous maximum≤ 2.5 mg/Lall year001
Aluminum, total [as Al]monthly average≤ .75 mg/Lall year001
Aluminum, total [as Al]monthly average≤ .75 mg/Lall year001
Aluminum, total [as Al]daily maximum≤ .75 mg/Lall year001
Aluminum, total [as Al]daily maximum≤ .75 mg/Lall year001
Aluminum, total [as Al]instantaneous maximum≤ .75 mg/Lall year001
Aluminum, total [as Al]instantaneous maximum≤ .75 mg/Lall year001
Flow, in conduit or thru treatment plantinstantaneous maximumreport only (gal/min)all year001
Flow, in conduit or thru treatment plantinstantaneous maximumreport only (gal/min)all year001
Alkalinity - Acidity [as CaCO3]instantaneous minimum≥ 0 mg/Lall year001
Alkalinity - Acidity [as CaCO3]instantaneous minimum≥ 0 mg/Lall year001
Temperature, water deg. centigradeinstantaneous maximumreport only (deg C)all year002
Temperature, water deg. centigradeinstantaneous maximumreport only (deg C)all year002
Conductivityinstantaneous maximumreport only (umho/cm)all year002
Conductivityinstantaneous maximumreport only (umho/cm)all year002
pHinstantaneous minimum≥ 6 SUall year002
pHinstantaneous minimum≥ 6 SUall year002
pHinstantaneous maximum≤ 9 SUall year002
pHinstantaneous maximum≤ 9 SUall year002
Alkalinity, total [as CaCO3]instantaneous maximumreport only (mg/L)all year002
Alkalinity, total [as CaCO3]instantaneous maximumreport only (mg/L)all year002
Acidity, total [as CaCO3]instantaneous maximumreport only (mg/L)all year002
Acidity, total [as CaCO3]instantaneous maximumreport only (mg/L)all year002
Solids, total suspendedmonthly average≤ 35 mg/Lall year002
Solids, total suspendedmonthly average≤ 35 mg/Lall year002
Solids, total suspendeddaily maximum≤ 70 mg/Lall year002
Solids, total suspendeddaily maximum≤ 70 mg/Lall year002
Solids, total suspendedinstantaneous maximum≤ 90 mg/Lall year002
Solids, total suspendedinstantaneous maximum≤ 90 mg/Lall year002
Sulfate, total [as SO4]instantaneous maximumreport only (mg/L)all year002
Sulfate, total [as SO4]instantaneous maximumreport only (mg/L)all year002
Iron, total [as Fe]monthly average≤ 1.5 mg/Lall year002
Iron, total [as Fe]monthly average≤ 1.5 mg/Lall year002
Iron, total [as Fe]daily maximum≤ 3 mg/Lall year002
Iron, total [as Fe]daily maximum≤ 3 mg/Lall year002
Iron, total [as Fe]instantaneous maximum≤ 3.7 mg/Lall year002
Iron, total [as Fe]instantaneous maximum≤ 3.7 mg/Lall year002
Manganese, total [as Mn]monthly average≤ 1 mg/Lall year002
Manganese, total [as Mn]monthly average≤ 1 mg/Lall year002
Manganese, total [as Mn]daily maximum≤ 2 mg/Lall year002
Manganese, total [as Mn]daily maximum≤ 2 mg/Lall year002
Manganese, total [as Mn]instantaneous maximum≤ 2.5 mg/Lall year002
Manganese, total [as Mn]instantaneous maximum≤ 2.5 mg/Lall year002
Aluminum, total [as Al]monthly average≤ .75 mg/Lall year002
Aluminum, total [as Al]monthly average≤ .75 mg/Lall year002
Aluminum, total [as Al]daily maximum≤ .75 mg/Lall year002
Aluminum, total [as Al]daily maximum≤ .75 mg/Lall year002
Aluminum, total [as Al]instantaneous maximum≤ .75 mg/Lall year002
Aluminum, total [as Al]instantaneous maximum≤ .75 mg/Lall year002
Flow, in conduit or thru treatment plantinstantaneous maximumreport only (gal/min)all year002
Flow, in conduit or thru treatment plantinstantaneous maximumreport only (gal/min)all year002
Alkalinity - Acidity [as CaCO3]instantaneous minimum≥ 0 mg/Lall year002
Alkalinity - Acidity [as CaCO3]instantaneous minimum≥ 0 mg/Lall year002
Temperature, water deg. centigradeinstantaneous maximumreport only (deg C)all year003
Temperature, water deg. centigradeinstantaneous maximumreport only (deg C)all year003
Conductivityinstantaneous maximumreport only (umho/cm)all year003
Conductivityinstantaneous maximumreport only (umho/cm)all year003
pHinstantaneous minimum≥ 6 SUall year003
pHinstantaneous minimum≥ 6 SUall year003
pHinstantaneous maximum≤ 9 SUall year003
pHinstantaneous maximum≤ 9 SUall year003
Alkalinity, total [as CaCO3]instantaneous maximumreport only (mg/L)all year003
Alkalinity, total [as CaCO3]instantaneous maximumreport only (mg/L)all year003
Acidity, total [as CaCO3]instantaneous maximumreport only (mg/L)all year003
Acidity, total [as CaCO3]instantaneous maximumreport only (mg/L)all year003
Solids, total suspendedmonthly average≤ 35 mg/Lall year003
Solids, total suspendedmonthly average≤ 35 mg/Lall year003
Solids, total suspendeddaily maximum≤ 70 mg/Lall year003
Solids, total suspendeddaily maximum≤ 70 mg/Lall year003
Solids, total suspendedinstantaneous maximum≤ 90 mg/Lall year003
Solids, total suspendedinstantaneous maximum≤ 90 mg/Lall year003
Sulfate, total [as SO4]instantaneous maximumreport only (mg/L)all year003
Sulfate, total [as SO4]instantaneous maximumreport only (mg/L)all year003
Iron, total [as Fe]monthly average≤ 1.5 mg/Lall year003
Iron, total [as Fe]monthly average≤ 1.5 mg/Lall year003
Iron, total [as Fe]daily maximum≤ 3 mg/Lall year003
Iron, total [as Fe]daily maximum≤ 3 mg/Lall year003
Iron, total [as Fe]instantaneous maximum≤ 3.7 mg/Lall year003
Iron, total [as Fe]instantaneous maximum≤ 3.7 mg/Lall year003
Manganese, total [as Mn]monthly average≤ 1 mg/Lall year003
Manganese, total [as Mn]monthly average≤ 1 mg/Lall year003
Manganese, total [as Mn]daily maximum≤ 2 mg/Lall year003
Manganese, total [as Mn]daily maximum≤ 2 mg/Lall year003
Manganese, total [as Mn]instantaneous maximum≤ 2.5 mg/Lall year003
Manganese, total [as Mn]instantaneous maximum≤ 2.5 mg/Lall year003
Aluminum, total [as Al]monthly average≤ .75 mg/Lall year003
Aluminum, total [as Al]monthly average≤ .75 mg/Lall year003
Aluminum, total [as Al]daily maximum≤ .75 mg/Lall year003
Aluminum, total [as Al]daily maximum≤ .75 mg/Lall year003
Aluminum, total [as Al]instantaneous maximum≤ .75 mg/Lall year003
Aluminum, total [as Al]instantaneous maximum≤ .75 mg/Lall year003
Flow, in conduit or thru treatment plantinstantaneous maximumreport only (gal/min)all year003
Flow, in conduit or thru treatment plantinstantaneous maximumreport only (gal/min)all year003
Alkalinity - Acidity [as CaCO3]instantaneous minimum≥ 0 mg/Lall year003
Alkalinity - Acidity [as CaCO3]instantaneous minimum≥ 0 mg/Lall year003

How strict are these limits?

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

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