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Nouryon Surface Chemistry LLC

Industrial Organic Chemicals, Morris, Illinois. NPDES permit IL0026069, in force until Aug 31, 2030. Last 12 months: over a limit once (last October 2025). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: outfall 001 form 0 monthly (22 values), outfall 001 form 1 monthly (6 values), outfall 002 form 0 monthly (8 values), outfall 001 form P quarterly, outfall 001 form Q quarterly, outfall 001 form S twice a year, and 2 more forms
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 44 reports late

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

Period endingParameterReportedLimitOver by
October 2025Nitrogen, ammonia total [as N], monthly average1.5 mg/L≤ 1.3 mg/L15%

Limits in force (273)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitmonthly maximum≤ 63 deg FJan, Feb, Mar, Dec001
Temperature, water deg. fahrenheitmonthly maximum≤ 93 deg FApr–Nov001
BOD, 5-day, 20 deg. C30-day average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. C30-day average≤ 10 mg/Lall year001
BOD, 5-day, 20 deg. Cdaily maximum≤ 60 mg/Lall year001
BOD, 5-day, 20 deg. Cdaily maximum≤ 20 mg/Lall year001
pHmonthly minimum≥ 6 SUall year001
pHmonthly minimum≥ 6.5 SUall year001
pHmonthly maximum≤ 9 SUall year001
pHmonthly maximum≤ 9 SUall year001
Solids, total suspended30-day average≤ 30 mg/Lall year001
Solids, total suspended30-day average≤ 12 mg/Lall year001
Solids, total suspendeddaily maximum≤ 60 mg/Lall year001
Solids, total suspendeddaily maximum≤ 24 mg/Lall year001
Oil & Grease30-day average≤ 15 mg/Lall year001
Oil & Greasedaily maximum≤ 30 mg/Lall year001
Oil & Greasedaily maximumreport only (mg/L)all year001
Nitrogen, ammonia total [as N]monthly average≤ 1.3 mg/LMar, Apr, May, Sep, Oct001
Nitrogen, ammonia total [as N]monthly average≤ 1.1 mg/LJun–Aug001
Nitrogen, ammonia total [as N]monthly average≤ 2.2 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 4.4 mg/LMar, Apr, May, Sep, Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 5.7 mg/LJun–Aug001
Nitrogen, ammonia total [as N]daily maximum≤ 2.9 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 2.8 mg/LJun–Aug001
Nitrogen, ammonia total [as N]weekly average≤ 3.3 mg/LMar, Apr, May, Sep, Oct001
Cyanide, total [as CN]quarterly average≤ .1 mg/Lall year001
Cyanide, total [as CN]quarterly maximum≤ .2 mg/Lall year001
Cyanide, total [as CN]quarterly average≤ .12 lb/dall year001
Cyanide, total [as CN]quarterly maximum≤ .24 lb/dall year001
Cyanide, free [amenable to chlorination]semi-annual averagereport only (mg/L)Jan, Jul001
Cyanide, free [amenable to chlorination]daily maximumreport only (ug/L)all year001
Cyanide, free [amenable to chlorination]semi-annual maximumreport only (mg/L)Jan, Jul001
Fluoride, total [as F]daily maximumreport only (mg/L)all year001
Arsenic, total [as As]daily maximumreport only (mg/L)all year001
Barium, total [as Ba]daily maximumreport only (mg/L)all year001
Cadmium, total [as Cd]daily maximumreport only (mg/L)all year001
Chromium, hexavalent [as Cr]daily maximumreport only (mg/L)all year001
Chromium, total [as Cr]quarterly average≤ 1 mg/Lall year001
Chromium, total [as Cr]quarterly maximum≤ 2 mg/Lall year001
Chromium, total [as Cr]quarterly average≤ 1.2 lb/dall year001
Chromium, total [as Cr]quarterly maximum≤ 2.4 lb/dall year001
Copper, total [as Cu]quarterly maximum≤ .06 mg/Lall year001
Copper, total [as Cu]quarterly average≤ .6 lb/dall year001
Copper, total [as Cu]quarterly maximum≤ 1.2 lb/dall year001
Iron, total [as Fe]daily maximumreport only (mg/L)all year001
Iron, dissolved [as Fe]quarterly maximum≤ 1 mg/Lall year001
Lead, total [as Pb]quarterly average≤ .2 mg/Lall year001
Lead, total [as Pb]quarterly maximum≤ .4 mg/Lall year001
Lead, total [as Pb]quarterly average≤ .24 lb/dall year001
Lead, total [as Pb]quarterly maximum≤ .48 lb/dall year001
Manganese, total [as Mn]daily maximumreport only (mg/L)all year001
Nickel, total [as Ni]30-day average≤ .02 mg/LMar, Jun, Sep, Dec001
Nickel, total [as Ni]30-day average≤ .05 lb/dMar, Jun, Sep, Dec001
Silver, total [as Ag]daily maximumreport only (mg/L)all year001
Zinc, total [as Zn]quarterly average≤ 1 mg/Lall year001
Zinc, total [as Zn]quarterly maximum≤ 2 mg/Lall year001
Zinc, total [as Zn]quarterly average≤ 1.2 lb/dall year001
Zinc, total [as Zn]quarterly maximum≤ 2.4 lb/dall year001
Selenium, total [as Se]daily maximumreport only (mg/L)all year001
Coliform, fecal - % samples exceeding limitmaximum≤ 10 %May–Oct001
Carbon tetrachloridesemi-annual average≤ .02 lb/dall year001
Carbon tetrachloridesemi-annual maximum≤ .05 lb/dall year001
Chloroformsemi-annual average≤ .03 lb/dall year001
Chloroformsemi-annual maximum≤ .06 lb/dall year001
Phenolics, total recoverabledaily maximumreport only (mg/L)all year001
Toluenesemi-annual average≤ .03 lb/dall year001
Toluenesemi-annual maximum≤ .1 lb/dall year001
Benzenesemi-annual average≤ .05 lb/dall year001
Benzenesemi-annual maximum≤ .16 lb/dall year001
Acenaphthylenesemi-annual average≤ .03 lb/dall year001
Acenaphthylenesemi-annual maximum≤ .07 lb/dall year001
Acenaphthenesemi-annual average≤ .03 lb/dall year001
Acenaphthenesemi-annual maximum≤ .07 lb/dall year001
Acrylonitrilesemi-annual average≤ .12 lb/dall year001
Acrylonitrilesemi-annual maximum≤ .29 lb/dall year001
Anthracenesemi-annual average≤ .03 lb/dall year001
Anthracenesemi-annual maximum≤ .07 lb/dall year001
Benzo[k]fluoranthenesemi-annual average≤ .03 lb/dall year001
Benzo[k]fluoranthenesemi-annual maximum≤ .07 lb/dall year001
Benzo[a]pyrenesemi-annual average≤ .03 lb/dall year001
Benzo[a]pyrenesemi-annual maximum≤ .07 lb/dall year001
Chlorobenzenesemi-annual average≤ .02 lb/dall year001
Chlorobenzenesemi-annual maximum≤ .03 lb/dall year001
Chrysenesemi-annual average≤ .03 lb/dall year001
Chrysenesemi-annual maximum≤ .07 lb/dall year001
Diethyl phthalatesemi-annual average≤ .1 lb/dall year001
Diethyl phthalatesemi-annual maximum≤ .25 lb/dall year001
Dimethyl phthalatesemi-annual average≤ .02 lb/dall year001
Dimethyl phthalatesemi-annual maximum≤ .06 lb/dall year001
Ethylbenzenesemi-annual average≤ .04 lb/dall year001
Ethylbenzenesemi-annual maximum≤ .13 lb/dall year001
Fluoranthenesemi-annual average≤ .03 lb/dall year001
Fluoranthenesemi-annual maximum≤ .08 lb/dall year001
Fluorenesemi-annual average≤ .03 lb/dall year001
Fluorenesemi-annual maximum≤ .07 lb/dall year001
Hexachloroethanesemi-annual average≤ .03 lb/dall year001
Hexachloroethanesemi-annual maximum≤ .07 lb/dall year001
Methyl chloride [Chloromethane]semi-annual average≤ .1 lb/dall year001
Methyl chloride [Chloromethane]semi-annual maximum≤ .23 lb/dall year001
Methylene chloridesemi-annual average≤ .05 lb/dall year001
Methylene chloridesemi-annual maximum≤ .11 lb/dall year001
Nitrobenzenesemi-annual average≤ .03 lb/dall year001
Nitrobenzenesemi-annual maximum≤ .08 lb/dall year001
Phenanthrenesemi-annual average≤ .03 lb/dall year001
Phenanthrenesemi-annual maximum≤ .07 lb/dall year001
Pyrenesemi-annual average≤ .03 lb/dall year001
Pyrenesemi-annual maximum≤ .08 lb/dall year001
1,1-Dichloroethanesemi-annual average≤ .03 lb/dall year001
1,1-Dichloroethanesemi-annual maximum≤ .07 lb/dall year001
1,1-Dichloroethylenesemi-annual average≤ .02 lb/dall year001
1,1-Dichloroethylenesemi-annual maximum≤ .03 lb/dall year001
1,1,1-Trichloroethanesemi-annual average≤ .03 lb/dall year001
1,1,1-Trichloroethanesemi-annual maximum≤ .07 lb/dall year001
1,1,2-Trichloroethanesemi-annual average≤ .03 lb/dall year001
1,1,2-Trichloroethanesemi-annual maximum≤ .07 lb/dall year001
Benzo[a]anthracenesemi-annual average≤ .03 lb/dall year001
Benzo[a]anthracenesemi-annual maximum≤ .07 lb/dall year001
1,2-Dichloroethane, total weightsemi-annual average≤ .08 lb/dall year001
1,2-Dichloroethane, total weightsemi-annual maximum≤ .26 lb/dall year001
1,2-Dichlorobenzenesemi-annual average≤ .09 lb/dall year001
1,2-Dichlorobenzenesemi-annual maximum≤ .2 lb/dall year001
1,2-Dichloropropanesemi-annual average≤ .19 lb/dall year001
1,2-Dichloropropanesemi-annual maximum≤ .28 lb/dall year001
trans-1,2-Dichloroethylenesemi-annual average≤ .03 lb/dall year001
trans-1,2-Dichloroethylenesemi-annual maximum≤ .07 lb/dall year001
1,2,4-Trichlorobenzenesemi-annual average≤ .08 lb/dall year001
1,2,4-Trichlorobenzenesemi-annual maximum≤ .17 lb/dall year001
1,3-Dichlorobenzenesemi-annual average≤ .04 lb/dall year001
1,3-Dichlorobenzenesemi-annual maximum≤ .05 lb/dall year001
1,4-Dichlorobenzenesemi-annual average≤ .02 lb/dall year001
1,4-Dichlorobenzenesemi-annual maximum≤ .03 lb/dall year001
2-Chlorophenolsemi-annual average≤ .04 lb/dall year001
2-Chlorophenolsemi-annual maximum≤ .12 lb/dall year001
2-Nitrophenolsemi-annual average≤ .05 lb/dall year001
2-Nitrophenolsemi-annual maximum≤ .08 lb/dall year001
2,4-Dichlorophenolsemi-annual average≤ .05 lb/dall year001
2,4-Dichlorophenolsemi-annual maximum≤ .14 lb/dall year001
2,4-Dimethylphenolsemi-annual average≤ .02 lb/dall year001
2,4-Dimethylphenolsemi-annual maximum≤ .04 lb/dall year001
2,4-Dinitrotoluenesemi-annual average≤ .14 lb/dall year001
2,4-Dinitrotoluenesemi-annual maximum≤ .35 lb/dall year001
2,4-Dinitrophenolsemi-annual average≤ .09 lb/dall year001
2,4-Dinitrophenolsemi-annual maximum≤ .15 lb/dall year001
2,6-Dinitrotoluenesemi-annual average≤ .31 lb/dall year001
2,6-Dinitrotoluenesemi-annual maximum≤ .78 lb/dall year001
4-Nitrophenolsemi-annual average≤ .09 lb/dall year001
4-Nitrophenolsemi-annual maximum≤ .15 lb/dall year001
4,6-Dinitro-o-cresolsemi-annual average≤ .09 lb/dall year001
4,6-Dinitro-o-cresolsemi-annual maximum≤ .34 lb/dall year001
Phenolsemi-annual maximum≤ .1 mg/Lall year001
Phenolsemi-annual average≤ .02 lb/dall year001
Phenolsemi-annual maximum≤ .03 lb/dall year001
Naphthalenesemi-annual average≤ .03 lb/dall year001
Naphthalenesemi-annual maximum≤ .07 lb/dall year001
Di[2-ethylhexyl] phthalate [DEHP]semi-annual average≤ .13 lb/dall year001
Di[2-ethylhexyl] phthalate [DEHP]semi-annual maximum≤ .34 lb/dall year001
Di-n-butyl phthalatesemi-annual average≤ .03 lb/dall year001
Di-n-butyl phthalatesemi-annual maximum≤ .07 lb/dall year001
Vinyl chloridesemi-annual average≤ .13 lb/dall year001
Vinyl chloridesemi-annual maximum≤ .32 lb/dall year001
Trichloroethylenesemi-annual average≤ .03 lb/dall year001
Trichloroethylenesemi-annual maximum≤ .07 lb/dall year001
Hexachlorobenzenesemi-annual average≤ .02 lb/dall year001
Hexachlorobenzenesemi-annual maximum≤ .03 lb/dall year001
Hexachlorobutadienesemi-annual average≤ .02 lb/dall year001
Hexachlorobutadienesemi-annual maximum≤ .06 lb/dall year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
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 residualdaily maximum≤ .05 mg/Lall year001
1,3-Dichloropropylenesemi-annual average≤ .04 lb/dall year001
1,3-Dichloropropylenesemi-annual maximum≤ .05 lb/dall year001
Perfluorooctanoic acid (PFOA)daily maximumreport only (ng/L)all year001
Perfluorobutanoic acid (PFBA)daily maximumreport only (ng/L)all year001
Perfluorooctanesulfonamide (PFOSA)daily maximumreport only (ng/L)all year001
Perfluoropentanoic acid (PFPeA)daily maximumreport only (ng/L)all year001
Perfluorohexanoic acid (PFHxA)daily maximumreport only (ng/L)all year001
Perfluoroheptanoic acid (PFHpA)daily maximumreport only (ng/L)all year001
Perfluorononanoic acid (PFNA)daily maximumreport only (ng/L)all year001
Perfluorodecanoic acid (PFDA)daily maximumreport only (ng/L)all year001
Perfluoroundecanoic acid (PFUnA)daily maximumreport only (ng/L)all year001
Perfluorododecanoic acid (PFDoA)daily maximumreport only (ng/L)all year001
Perfluorotridecanoic acid (PFTrDA)daily maximumreport only (ng/L)all year001
Perfluorotetradecanoic acid (PFTeDA)daily maximumreport only (ng/L)all year001
N-ethyl perfluorooctanesulfonamidoethanol (NEtFOSE)daily maximumreport only (ng/L)all year001
N-methyl perfluorooctanesulfonamidoethanol (NMeFOSE)daily maximumreport only (ng/L)all year001
N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)daily maximumreport only (ng/L)all year001
N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)daily maximumreport only (ng/L)all year001
Perfluorobutanesulfonic acid (PFBS)daily maximumreport only (ng/L)all year001
Perfluorodecanesulfonic acid (PFDS)daily maximumreport only (ng/L)all year001
Perfluoroheptanesulfonic acid (PFHpS)daily maximumreport only (ng/L)all year001
Perfluorohexanesulfonic acid (PFHxS)daily maximumreport only (ng/L)all year001
Perfluorooctanesulfonic acid (PFOS)daily maximumreport only (ng/L)all year001
1H,1H,2H,2H-Perfluorohexane sulfonic acid (4:2 FTS)daily maximumreport only (ng/L)all year001
1H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS)daily maximumreport only (ng/L)all year001
1H,1H, 2H, 2H-Perfluorodecane sulfonic acid (8:2 FTS)daily maximumreport only (ng/L)all year001
Perfluoropentanesulfonic acid (PFPeS)daily maximumreport only (ng/L)all year001
Perfluorononanesulfonic acid (PFNS)daily maximumreport only (ng/L)all year001
Hexafluoropropylene oxide dimer acid (HFPO-DA)daily maximumreport only (ng/L)all year001
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)daily maximumreport only (ng/L)all year001
Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA)daily maximumreport only (ng/L)all year001
Perfluorododecanesulfonic acid (PFDoS)daily maximumreport only (ng/L)all year001
4,8-Dioxa-3H-perfluorononanoic acid (ADONA)daily maximumreport only (ng/L)all year001
N-methyl perfluorooctanesulfonamide (NMeFOSA)daily maximumreport only (ng/L)all year001
N-ethyl perfluorooctanesulfonamide (NEtFOSA)daily maximumreport only (ng/L)all year001
Mercury, total [as Hg]daily maximumreport only (ng/L)all year001
Coliform, fecal generalgeometric mean≤ 200 #/100mLMay–Oct001
Coliform, fecal generaldaily maximumreport only (#/100mL)May–Oct001
3,4-Benzofluoranthenesemi-annual average≤ .03 lb/dall year001
3,4-Benzofluoranthenesemi-annual maximum≤ .07 lb/dall year001
Chloroethanesemi-annual average≤ .13 lb/dall year001
Chloroethanesemi-annual maximum≤ .32 lb/dall year001
Tetrachloroethylenesemi-annual average≤ .03 lb/dall year001
Tetrachloroethylenesemi-annual maximum≤ .07 lb/dall year001
PFAS Sumdaily maximumreport only (ng/L)all year001
3-Perfluoropropyl propanoic acid (3:3 FTCA)daily maximumreport only (ng/L)all year001
Perfluoro-3-methoxypropanoic acid (PFMPA)daily maximumreport only (ng/L)all year001
9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (9Cl-PF3ONS)daily maximumreport only (ng/L)all year001
11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)daily maximumreport only (ng/L)all year001
3-Perfluoroheptyl propanoic acid (7:3 FTCA)daily maximumreport only (ng/L)all year001
Perfluoro-4-methoxybutanoic acid (PFMBA)daily maximumreport only (ng/L)all year001
2H,2H,3H,3H-Perfluorooctanoic acid (5:3 FTCA)daily maximumreport only (ng/L)all year001
Temperature, water deg. fahrenheitmonthly maximum≤ 63 deg FJan, Feb, Mar, Dec002
Temperature, water deg. fahrenheitmonthly maximum≤ 93 deg FApr–Nov002
pHmonthly minimum≥ 6.5 SUall year002
pHmonthly maximum≤ 9 SUall year002
Copper, total [as Cu]30-day averagereport only (mg/L)all year002
Copper, total [as Cu]daily maximumreport only (mg/L)all year002
Temperature, length of excursionmonthly total≤ 87.6 hr/12moall year002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
Perfluorooctanoic acid (PFOA)daily maximumreport only (ng/L)all year002
Perfluorobutanoic acid (PFBA)daily maximumreport only (ng/L)all year002
Perfluorooctanesulfonamide (PFOSA)daily maximumreport only (ng/L)all year002
Perfluoropentanoic acid (PFPeA)daily maximumreport only (ng/L)all year002
Perfluorohexanoic acid (PFHxA)daily maximumreport only (ng/L)all year002
Perfluoroheptanoic acid (PFHpA)daily maximumreport only (ng/L)all year002
Perfluorononanoic acid (PFNA)daily maximumreport only (ng/L)all year002
Perfluorodecanoic acid (PFDA)daily maximumreport only (ng/L)all year002
Perfluoroundecanoic acid (PFUnA)daily maximumreport only (ng/L)all year002
Perfluorododecanoic acid (PFDoA)daily maximumreport only (ng/L)all year002
Perfluorotridecanoic acid (PFTrDA)daily maximumreport only (ng/L)all year002
Perfluorotetradecanoic acid (PFTeDA)daily maximumreport only (ng/L)all year002
N-ethyl perfluorooctanesulfonamidoethanol (NEtFOSE)daily maximumreport only (ng/L)all year002
N-methyl perfluorooctanesulfonamidoethanol (NMeFOSE)daily maximumreport only (ng/L)all year002
N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)daily maximumreport only (ng/L)all year002
N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)daily maximumreport only (ng/L)all year002
Perfluorobutanesulfonic acid (PFBS)daily maximumreport only (ng/L)all year002
Perfluorodecanesulfonic acid (PFDS)daily maximumreport only (ng/L)all year002
Perfluoroheptanesulfonic acid (PFHpS)daily maximumreport only (ng/L)all year002
Perfluorohexanesulfonic acid (PFHxS)daily maximumreport only (ng/L)all year002
Perfluorooctanesulfonic acid (PFOS)daily maximumreport only (ng/L)all year002
1H,1H,2H,2H-Perfluorohexane sulfonic acid (4:2 FTS)daily maximumreport only (ng/L)all year002
1H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS)daily maximumreport only (ng/L)all year002
1H,1H, 2H, 2H-Perfluorodecane sulfonic acid (8:2 FTS)daily maximumreport only (ng/L)all year002
Perfluoropentanesulfonic acid (PFPeS)daily maximumreport only (ng/L)all year002
Perfluorononanesulfonic acid (PFNS)daily maximumreport only (ng/L)all year002
Hexafluoropropylene oxide dimer acid (HFPO-DA)daily maximumreport only (ng/L)all year002
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)daily maximumreport only (ng/L)all year002
Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA)daily maximumreport only (ng/L)all year002
Perfluorododecanesulfonic acid (PFDoS)daily maximumreport only (ng/L)all year002
4,8-Dioxa-3H-perfluorononanoic acid (ADONA)daily maximumreport only (ng/L)all year002
N-methyl perfluorooctanesulfonamide (NMeFOSA)daily maximumreport only (ng/L)all year002
N-ethyl perfluorooctanesulfonamide (NEtFOSA)daily maximumreport only (ng/L)all year002
PFAS Sumdaily maximumreport only (ng/L)all year002
3-Perfluoropropyl propanoic acid (3:3 FTCA)daily maximumreport only (ng/L)all year002
Perfluoro-3-methoxypropanoic acid (PFMPA)daily maximumreport only (ng/L)all year002
9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (9Cl-PF3ONS)daily maximumreport only (ng/L)all year002
11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)daily maximumreport only (ng/L)all year002
3-Perfluoroheptyl propanoic acid (7:3 FTCA)daily maximumreport only (ng/L)all year002
Perfluoro-4-methoxybutanoic acid (PFMBA)daily maximumreport only (ng/L)all year002
2H,2H,3H,3H-Perfluorooctanoic acid (5:3 FTCA)daily maximumreport only (ng/L)all year002

How strict are these limits?

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

Same industry: the 58 Chemicals and Allied Products permits in Illinois.

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