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Nucor Steel, Crawfordsvill PLT

Blast Furnaces And Steel Mills, Crawfordsville, Indiana. NPDES permit IN0054682, in force until Sep 30, 2030. Last 12 months: no values over a limit, 6 required values missing, 7 of 95 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form B monthly (47 values), outfall 102 form A monthly (20 values), outfall 103 form A monthly (20 values), outfall 104 form A monthly (20 values), outfall 106 form A monthly (28 values), outfall 110 form A monthly (10 values), and 1 more form
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 2 required values missing, 2 of 106 reports late

Limits in force (354)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year001
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year001
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 70 mg/Lall year001
Solids, total suspendeddaily maximum≤ 140 mg/Lall year001
Solids, total suspendedmonthly averagereport only (lb/d)all year001
Solids, total suspendeddaily maximumreport only (lb/d)all year001
Oil and grease, hexane extr methodmonthly average≤ 10 mg/Lall year001
Oil and grease, hexane extr methoddaily maximum≤ 15 mg/Lall year001
Oil and grease, hexane extr methodmonthly averagereport only (lb/d)all year001
Oil and grease, hexane extr methoddaily maximumreport only (lb/d)all year001
Hardness, total [as CaCO3]daily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Fluoride, total [as F]monthly averagereport only (mg/L)all year001
Fluoride, total [as F]monthly average≤ 1.9 mg/Lall year001
Fluoride, total [as F]daily maximumreport only (mg/L)all year001
Fluoride, total [as F]daily maximum≤ 3.3 mg/Lall year001
Fluoride, total [as F]monthly averagereport only (lb/d)all year001
Fluoride, total [as F]monthly averagereport only (lb/d)all year001
Fluoride, total [as F]daily maximumreport only (lb/d)all year001
Fluoride, total [as F]daily maximumreport only (lb/d)all year001
Iron, total recoverablemonthly averagereport only (mg/L)all year001
Iron, total recoverablemonthly average≤ 2.4 mg/Lall year001
Iron, total recoverabledaily maximumreport only (mg/L)all year001
Iron, total recoverabledaily maximum≤ 4.1 mg/Lall year001
Iron, total recoverablemonthly averagereport only (lb/d)all year001
Iron, total recoverablemonthly averagereport only (lb/d)all year001
Iron, total recoverabledaily maximumreport only (lb/d)all year001
Iron, total recoverabledaily maximumreport only (lb/d)all year001
Nickel, total recoverablemonthly average≤ .07 mg/Lall year001
Nickel, total recoverabledaily maximum≤ .16 mg/Lall year001
Nickel, total recoverablemonthly averagereport only (lb/d)all year001
Nickel, total recoverabledaily maximumreport only (lb/d)all year001
Zinc, total recoverablemonthly average≤ .18 mg/Lall year001
Zinc, total recoverabledaily maximum≤ .42 mg/Lall year001
Zinc, total recoverablemonthly averagereport only (lb/d)all year001
Zinc, total recoverabledaily maximumreport only (lb/d)all year001
Lead, total recoverablemonthly average≤ .008 mg/Lall year001
Lead, total recoverabledaily maximum≤ .02 mg/Lall year001
Lead, total recoverablemonthly averagereport only (lb/d)all year001
Lead, total recoverabledaily maximumreport only (lb/d)all year001
Chromium, total recoverablemonthly average≤ .35 mg/Lall year001
Chromium, total recoverabledaily maximum≤ .8 mg/Lall year001
Chromium, total recoverablemonthly averagereport only (lb/d)all year001
Chromium, total recoverabledaily maximumreport only (lb/d)all year001
Copper, total recoverablemonthly averagereport only (mg/L)all year001
Copper, total recoverablemonthly average≤ .037 mg/Lall year001
Copper, total recoverabledaily maximumreport only (mg/L)all year001
Copper, total recoverabledaily maximum≤ .063 mg/Lall year001
Copper, total recoverablemonthly averagereport only (lb/d)all year001
Copper, total recoverablemonthly averagereport only (lb/d)all year001
Copper, total recoverabledaily maximumreport only (lb/d)all year001
Copper, total recoverabledaily maximumreport only (lb/d)all year001
Chromium, hexavalent dissolved [as Cr]monthly averagereport only (mg/L)Mar, Jun, Sep, Dec001
Chromium, hexavalent dissolved [as Cr]daily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Chromium, hexavalent dissolved [as Cr]monthly averagereport only (lb/d)Mar, Jun, Sep, Dec001
Chromium, hexavalent dissolved [as Cr]daily maximumreport only (lb/d)Mar, Jun, Sep, Dec001
Tetrachloroethylenemonthly averagereport only (mg/L)Jun, Dec001
Tetrachloroethylenemonthly averagereport only (mg/L)Jun, Dec001
Tetrachloroethylenedaily maximumreport only (mg/L)Jun, Dec001
Tetrachloroethylenedaily maximumreport only (mg/L)Jun, Dec001
Tetrachloroethylenemonthly averagereport only (lb/d)Jun, Dec001
Tetrachloroethylenemonthly averagereport only (lb/d)Jun, Dec001
Tetrachloroethylenedaily maximumreport only (lb/d)Jun, Dec001
Tetrachloroethylenedaily maximumreport only (lb/d)Jun, Dec001
Naphthalenemonthly averagereport only (mg/L)Jun, Dec001
Naphthalenemonthly averagereport only (mg/L)Jun, Dec001
Naphthalenedaily maximumreport only (mg/L)Jun, Dec001
Naphthalenedaily maximumreport only (mg/L)Jun, Dec001
Naphthalenemonthly averagereport only (lb/d)Jun, Dec001
Naphthalenemonthly averagereport only (lb/d)Jun, Dec001
Naphthalenedaily maximumreport only (lb/d)Jun, Dec001
Naphthalenedaily maximumreport only (lb/d)Jun, Dec001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualmonthly average< .06 mg/Lall year001
Chlorine, total residualdaily maximum< .06 mg/Lall year001
Chlorine, total residualmonthly averagereport only (lb/d)all year001
Chlorine, total residualdaily maximumreport only (lb/d)all year001
Flow, totalmonthly totalreport only (Mgal/mo)all year001
pHdaily maximumreport only (SU)Jun, Dec003
pHdaily maximumreport only (SU)Jun, Dec003
Solids, total suspendeddaily maximumreport only (mg/L)Jun, Dec003
Solids, total suspendeddaily maximumreport only (mg/L)Jun, Dec003
Oil and grease, hexane extr methoddaily maximumreport only (mg/L)Jun, Dec003
Oil and grease, hexane extr methoddaily maximumreport only (mg/L)Jun, Dec003
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jun, Dec003
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jun, Dec003
Phosphorus, total [as P]daily maximumreport only (mg/L)Jun, Dec003
Phosphorus, total [as P]daily maximumreport only (mg/L)Jun, Dec003
Fluoride, total [as F]semi-annual maximumreport only (mg/L)Jun, Dec003
Fluoride, total [as F]semi-annual maximumreport only (mg/L)Jun, Dec003
Iron, total recoverablesemi-annual maximumreport only (mg/L)Jun, Dec003
Iron, total recoverablesemi-annual maximumreport only (mg/L)Jun, Dec003
Zinc, total recoverablesemi-annual maximumreport only (mg/L)Jun, Dec003
Zinc, total recoverablesemi-annual maximumreport only (mg/L)Jun, Dec003
Lead, total recoverablesemi-annual maximumreport only (mg/L)Jun, Dec003
Lead, total recoverablesemi-annual maximumreport only (mg/L)Jun, Dec003
Storm water flowsemi-annual maximumreport only (MGD)Jun, Dec003
Storm water flowsemi-annual maximumreport only (MGD)Jun, Dec003
pHdaily maximumreport only (SU)Jun, Dec004
pHdaily maximumreport only (SU)Jun, Dec004
Solids, total suspendeddaily maximumreport only (mg/L)Jun, Dec004
Solids, total suspendeddaily maximumreport only (mg/L)Jun, Dec004
Oil and grease, hexane extr methoddaily maximumreport only (mg/L)Jun, Dec004
Oil and grease, hexane extr methoddaily maximumreport only (mg/L)Jun, Dec004
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jun, Dec004
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jun, Dec004
Phosphorus, total [as P]daily maximumreport only (mg/L)Jun, Dec004
Phosphorus, total [as P]daily maximumreport only (mg/L)Jun, Dec004
Fluoride, total [as F]daily maximumreport only (mg/L)Jun, Dec004
Fluoride, total [as F]daily maximumreport only (mg/L)Jun, Dec004
Iron, total recoverabledaily maximumreport only (mg/L)Jun, Dec004
Iron, total recoverabledaily maximumreport only (mg/L)Jun, Dec004
Zinc, total recoverabledaily maximumreport only (mg/L)Jun, Dec004
Zinc, total recoverabledaily maximumreport only (mg/L)Jun, Dec004
Lead, total recoverabledaily maximumreport only (mg/L)Jun, Dec004
Lead, total recoverabledaily maximumreport only (mg/L)Jun, Dec004
Storm water flowdaily maximumreport only (MGD)Jun, Dec004
Storm water flowdaily maximumreport only (MGD)Jun, Dec004
pHdaily maximumreport only (SU)Jun, Dec005
pHdaily maximumreport only (SU)Jun, Dec005
Solids, total suspendeddaily maximumreport only (mg/L)Jun, Dec005
Solids, total suspendeddaily maximumreport only (mg/L)Jun, Dec005
Oil and grease, hexane extr methoddaily maximumreport only (mg/L)Jun, Dec005
Oil and grease, hexane extr methoddaily maximumreport only (mg/L)Jun, Dec005
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jun, Dec005
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jun, Dec005
Phosphorus, total [as P]daily maximumreport only (mg/L)Jun, Dec005
Phosphorus, total [as P]daily maximumreport only (mg/L)Jun, Dec005
Fluoride, total [as F]daily maximumreport only (mg/L)Jun, Dec005
Fluoride, total [as F]daily maximumreport only (mg/L)Jun, Dec005
Iron, total recoverabledaily maximumreport only (mg/L)Jun, Dec005
Iron, total recoverabledaily maximumreport only (mg/L)Jun, Dec005
Zinc, total recoverabledaily maximumreport only (mg/L)Jun, Dec005
Zinc, total recoverabledaily maximumreport only (mg/L)Jun, Dec005
Lead, total recoverabledaily maximumreport only (mg/L)Jun, Dec005
Lead, total recoverabledaily maximumreport only (mg/L)Jun, Dec005
Storm water flowdaily maximumreport only (MGD)Jun, Dec005
Storm water flowdaily maximumreport only (MGD)Jun, Dec005
pHdaily maximumreport only (SU)Jun, Dec006
pHdaily maximumreport only (SU)Jun, Dec006
Solids, total suspendeddaily maximumreport only (mg/L)Jun, Dec006
Solids, total suspendeddaily maximumreport only (mg/L)Jun, Dec006
Oil and grease, hexane extr methoddaily maximumreport only (mg/L)Jun, Dec006
Oil and grease, hexane extr methoddaily maximumreport only (mg/L)Jun, Dec006
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jun, Dec006
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jun, Dec006
Phosphorus, total [as P]daily maximumreport only (mg/L)Jun, Dec006
Phosphorus, total [as P]daily maximumreport only (mg/L)Jun, Dec006
Fluoride, total [as F]daily maximumreport only (mg/L)Jun, Dec006
Fluoride, total [as F]daily maximumreport only (mg/L)Jun, Dec006
Iron, total recoverabledaily maximumreport only (mg/L)Jun, Dec006
Iron, total recoverabledaily maximumreport only (mg/L)Jun, Dec006
Zinc, total recoverabledaily maximumreport only (mg/L)Jun, Dec006
Zinc, total recoverabledaily maximumreport only (mg/L)Jun, Dec006
Lead, total recoverabledaily maximumreport only (mg/L)Jun, Dec006
Lead, total recoverabledaily maximumreport only (mg/L)Jun, Dec006
Storm water flowdaily maximumreport only (MGD)Jun, Dec006
Storm water flowdaily maximumreport only (MGD)Jun, Dec006
pHdaily maximumreport only (SU)Jun, Dec007
pHdaily maximumreport only (SU)Jun, Dec007
Solids, total suspendeddaily maximumreport only (mg/L)Jun, Dec007
Solids, total suspendeddaily maximumreport only (mg/L)Jun, Dec007
Oil and grease, hexane extr methoddaily maximumreport only (mg/L)Jun, Dec007
Oil and grease, hexane extr methoddaily maximumreport only (mg/L)Jun, Dec007
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jun, Dec007
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jun, Dec007
Phosphorus, total [as P]daily maximumreport only (mg/L)Jun, Dec007
Phosphorus, total [as P]daily maximumreport only (mg/L)Jun, Dec007
Fluoride, total [as F]daily maximumreport only (mg/L)Jun, Dec007
Fluoride, total [as F]daily maximumreport only (mg/L)Jun, Dec007
Iron, total recoverabledaily maximumreport only (mg/L)Jun, Dec007
Iron, total recoverabledaily maximumreport only (mg/L)Jun, Dec007
Zinc, total recoverabledaily maximumreport only (mg/L)Jun, Dec007
Zinc, total recoverabledaily maximumreport only (mg/L)Jun, Dec007
Lead, total recoverabledaily maximumreport only (mg/L)Jun, Dec007
Lead, total recoverabledaily maximumreport only (mg/L)Jun, Dec007
Storm water flowdaily maximumreport only (MGD)Jun, Dec007
Storm water flowdaily maximumreport only (MGD)Jun, Dec007
pHdaily maximumreport only (SU)Jun, Dec008
pHdaily maximumreport only (SU)Jun, Dec008
Solids, total suspendeddaily maximumreport only (mg/L)Jun, Dec008
Solids, total suspendeddaily maximumreport only (mg/L)Jun, Dec008
Oil and grease, hexane extr methoddaily maximumreport only (mg/L)Jun, Dec008
Oil and grease, hexane extr methoddaily maximumreport only (mg/L)Jun, Dec008
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jun, Dec008
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jun, Dec008
Phosphorus, total [as P]daily maximumreport only (mg/L)Jun, Dec008
Phosphorus, total [as P]daily maximumreport only (mg/L)Jun, Dec008
Fluoride, total [as F]daily maximumreport only (mg/L)Jun, Dec008
Fluoride, total [as F]daily maximumreport only (mg/L)Jun, Dec008
Iron, total recoverabledaily maximumreport only (mg/L)Jun, Dec008
Iron, total recoverabledaily maximumreport only (mg/L)Jun, Dec008
Zinc, total recoverabledaily maximumreport only (mg/L)Jun, Dec008
Zinc, total recoverabledaily maximumreport only (mg/L)Jun, Dec008
Lead, total recoverabledaily maximumreport only (mg/L)Jun, Dec008
Lead, total recoverabledaily maximumreport only (mg/L)Jun, Dec008
Storm water flowdaily maximumreport only (MGD)Jun, Dec008
Storm water flowdaily maximumreport only (MGD)Jun, Dec008
pHdaily maximumreport only (SU)Jun, Dec009
pHdaily maximumreport only (SU)Jun, Dec009
Solids, total suspendeddaily maximumreport only (mg/L)Jun, Dec009
Solids, total suspendeddaily maximumreport only (mg/L)Jun, Dec009
Oil and grease, hexane extr methoddaily maximumreport only (mg/L)Jun, Dec009
Oil and grease, hexane extr methoddaily maximumreport only (mg/L)Jun, Dec009
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jun, Dec009
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jun, Dec009
Phosphorus, total [as P]daily maximumreport only (mg/L)Jun, Dec009
Phosphorus, total [as P]daily maximumreport only (mg/L)Jun, Dec009
Fluoride, total [as F]daily maximumreport only (mg/L)Jun, Dec009
Fluoride, total [as F]daily maximumreport only (mg/L)Jun, Dec009
Iron, total recoverabledaily maximumreport only (mg/L)Jun, Dec009
Iron, total recoverabledaily maximumreport only (mg/L)Jun, Dec009
Zinc, total recoverabledaily maximumreport only (mg/L)Jun, Dec009
Zinc, total recoverabledaily maximumreport only (mg/L)Jun, Dec009
Lead, total recoverabledaily maximumreport only (mg/L)Jun, Dec009
Lead, total recoverabledaily maximumreport only (mg/L)Jun, Dec009
Storm water flowdaily maximumreport only (MGD)Jun, Dec009
Storm water flowdaily maximumreport only (MGD)Jun, Dec009
pHdaily minimum≥ 6 SUall year102
pHdaily maximum≤ 10 SUall year102
Solids, total suspendedmonthly averagereport only (mg/L)all year102
Solids, total suspendeddaily maximumreport only (mg/L)all year102
Solids, total suspendedmonthly averagereport only (lb/d)all year102
Solids, total suspendeddaily maximumreport only (lb/d)all year102
Oil and grease, hexane extr methodmonthly averagereport only (mg/L)all year102
Oil and grease, hexane extr methoddaily maximumreport only (mg/L)all year102
Oil and grease, hexane extr methodmonthly averagereport only (lb/d)all year102
Oil and grease, hexane extr methoddaily maximumreport only (lb/d)all year102
Zinc, total recoverablemonthly averagereport only (mg/L)all year102
Zinc, total recoverabledaily maximumreport only (mg/L)all year102
Zinc, total recoverablemonthly averagereport only (lb/d)all year102
Zinc, total recoverabledaily maximumreport only (lb/d)all year102
Lead, total recoverablemonthly averagereport only (mg/L)all year102
Lead, total recoverabledaily maximumreport only (mg/L)all year102
Lead, total recoverablemonthly averagereport only (lb/d)all year102
Lead, total recoverabledaily maximumreport only (lb/d)all year102
Tetrachloroethylenesemi-annual maximumreport only (mg/L)Jun, Dec102
Tetrachloroethylenesemi-annual maximumreport only (mg/L)Jun, Dec102
Tetrachloroethylenesemi-annual maximumreport only (lb/d)Jun, Dec102
Tetrachloroethylenesemi-annual maximumreport only (lb/d)Jun, Dec102
Naphthalenesemi-annual maximumreport only (mg/L)Jun, Dec102
Naphthalenesemi-annual maximumreport only (mg/L)Jun, Dec102
Naphthalenesemi-annual maximumreport only (lb/d)Jun, Dec102
Naphthalenesemi-annual maximumreport only (lb/d)Jun, Dec102
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year102
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year102
pHdaily minimum≥ 6 SUall year103
pHdaily maximum≤ 9 SUall year103
Solids, total suspendedmonthly averagereport only (mg/L)all year103
Solids, total suspendeddaily maximumreport only (mg/L)all year103
Solids, total suspendedmonthly averagereport only (lb/d)all year103
Solids, total suspendeddaily maximumreport only (lb/d)all year103
Oil and grease, hexane extr methodmonthly averagereport only (mg/L)all year103
Oil and grease, hexane extr methoddaily maximumreport only (mg/L)all year103
Oil and grease, hexane extr methodmonthly averagereport only (lb/d)all year103
Oil and grease, hexane extr methoddaily maximumreport only (lb/d)all year103
Zinc, total recoverablemonthly averagereport only (mg/L)all year103
Zinc, total recoverabledaily maximumreport only (mg/L)all year103
Zinc, total recoverablemonthly averagereport only (lb/d)all year103
Zinc, total recoverabledaily maximumreport only (lb/d)all year103
Lead, total recoverablemonthly averagereport only (mg/L)all year103
Lead, total recoverabledaily maximumreport only (mg/L)all year103
Lead, total recoverablemonthly averagereport only (lb/d)all year103
Lead, total recoverabledaily maximumreport only (lb/d)all year103
Tetrachloroethylenesemi-annual maximumreport only (mg/L)Jun, Dec103
Tetrachloroethylenesemi-annual maximumreport only (mg/L)Jun, Dec103
Tetrachloroethylenesemi-annual maximumreport only (lb/d)Jun, Dec103
Tetrachloroethylenesemi-annual maximumreport only (lb/d)Jun, Dec103
Naphthalenesemi-annual maximumreport only (mg/L)Jun, Dec103
Naphthalenesemi-annual maximumreport only (mg/L)Jun, Dec103
Naphthalenesemi-annual maximumreport only (lb/d)Jun, Dec103
Naphthalenesemi-annual maximumreport only (lb/d)Jun, Dec103
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year103
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year103
pHdaily minimum≥ 6 SUall year104
pHdaily maximum≤ 9 SUall year104
Solids, total suspendedmonthly averagereport only (mg/L)all year104
Solids, total suspendeddaily maximumreport only (mg/L)all year104
Solids, total suspendedmonthly averagereport only (lb/d)all year104
Solids, total suspendeddaily maximumreport only (lb/d)all year104
Oil and grease, hexane extr methodmonthly averagereport only (mg/L)all year104
Oil and grease, hexane extr methoddaily maximumreport only (mg/L)all year104
Oil and grease, hexane extr methodmonthly averagereport only (lb/d)all year104
Oil and grease, hexane extr methoddaily maximumreport only (lb/d)all year104
Zinc, total recoverablemonthly averagereport only (mg/L)all year104
Zinc, total recoverabledaily maximumreport only (mg/L)all year104
Zinc, total recoverablemonthly averagereport only (lb/d)all year104
Zinc, total recoverabledaily maximumreport only (lb/d)all year104
Lead, total recoverablemonthly averagereport only (mg/L)all year104
Lead, total recoverabledaily maximumreport only (mg/L)all year104
Lead, total recoverablemonthly averagereport only (lb/d)all year104
Lead, total recoverabledaily maximumreport only (lb/d)all year104
Tetrachloroethylenesemi-annual maximumreport only (mg/L)Jun, Dec104
Tetrachloroethylenesemi-annual maximumreport only (mg/L)Jun, Dec104
Tetrachloroethylenesemi-annual maximumreport only (lb/d)Jun, Dec104
Tetrachloroethylenesemi-annual maximumreport only (lb/d)Jun, Dec104
Naphthalenesemi-annual maximumreport only (mg/L)Jun, Dec104
Naphthalenesemi-annual maximumreport only (mg/L)Jun, Dec104
Naphthalenesemi-annual maximumreport only (lb/d)Jun, Dec104
Naphthalenesemi-annual maximumreport only (lb/d)Jun, Dec104
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year104
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year104
pHdaily minimum≥ 6 SUall year106
pHdaily maximum≤ 9 SUall year106
Solids, total suspendedmonthly averagereport only (mg/L)all year106
Solids, total suspendeddaily maximumreport only (mg/L)all year106
Solids, total suspendedmonthly averagereport only (lb/d)all year106
Solids, total suspendeddaily maximumreport only (lb/d)all year106
Oil and grease, hexane extr methodmonthly averagereport only (mg/L)all year106
Oil and grease, hexane extr methoddaily maximumreport only (mg/L)all year106
Oil and grease, hexane extr methodmonthly averagereport only (lb/d)all year106
Oil and grease, hexane extr methoddaily maximumreport only (lb/d)all year106
Nickel, total recoverablemonthly averagereport only (mg/L)all year106
Nickel, total recoverabledaily maximumreport only (mg/L)all year106
Nickel, total recoverablemonthly averagereport only (lb/d)all year106
Nickel, total recoverabledaily maximumreport only (lb/d)all year106
Zinc, total recoverablemonthly averagereport only (mg/L)all year106
Zinc, total recoverabledaily maximumreport only (mg/L)all year106
Zinc, total recoverablemonthly averagereport only (lb/d)all year106
Zinc, total recoverabledaily maximumreport only (lb/d)all year106
Lead, total recoverablemonthly averagereport only (mg/L)all year106
Lead, total recoverabledaily maximumreport only (mg/L)all year106
Lead, total recoverablemonthly averagereport only (lb/d)all year106
Lead, total recoverabledaily maximumreport only (lb/d)all year106
Chromium, total recoverablemonthly averagereport only (mg/L)all year106
Chromium, total recoverabledaily maximumreport only (mg/L)all year106
Chromium, total recoverablemonthly averagereport only (lb/d)all year106
Chromium, total recoverabledaily maximumreport only (lb/d)all year106
Tetrachloroethylenesemi-annual maximumreport only (mg/L)Jun, Dec106
Tetrachloroethylenesemi-annual maximumreport only (mg/L)Jun, Dec106
Tetrachloroethylenesemi-annual maximumreport only (lb/d)Jun, Dec106
Tetrachloroethylenesemi-annual maximumreport only (lb/d)Jun, Dec106
Naphthalenesemi-annual maximumreport only (mg/L)Jun, Dec106
Naphthalenesemi-annual maximumreport only (mg/L)Jun, Dec106
Naphthalenesemi-annual maximumreport only (lb/d)Jun, Dec106
Naphthalenesemi-annual maximumreport only (lb/d)Jun, Dec106
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year106
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year106
Solids, total suspendedmonthly average≤ 620 lb/dall year110
Solids, total suspendeddaily maximum≤ 1600 lb/dall year110
Oil and grease, hexane extr methodmonthly average≤ 83 lb/dall year110
Oil and grease, hexane extr methoddaily maximum≤ 500 lb/dall year110
Zinc, total recoverablemonthly average≤ .9 lb/dall year110
Zinc, total recoverabledaily maximum≤ 2.9 lb/dall year110
Lead, total recoverablemonthly average≤ .71 lb/dall year110
Lead, total recoverabledaily maximum≤ 2 lb/dall year110
Tetrachloroethylenesemi-annual maximum≤ .032 lb/dJun, Dec110
Tetrachloroethylenesemi-annual maximum≤ .032 lb/dJun, Dec110
Naphthalenesemi-annual maximum≤ .022 lb/dJun, Dec110
Naphthalenesemi-annual maximum≤ .022 lb/dJun, Dec110
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year110
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year110

How strict are these limits?

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

Same industry: the 54 Primary Metal Industries permits in Indiana.

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Your permit document is the final word. As JSON: /api/v1/permits/IN0054682 · MCP: https://passage-data.com/mcp