Equistar Chemicals, LP — NPDES permit IA0000191: limits, due date and EPA's record

Plastics Materials And Resins, major discharger, Clinton, Iowa. NPDES permit IA0000191, in force until Jun 30, 2029. Last 12 months: no values over a limit, 2 required values missing. Source: EPA ECHO, Oct 22, 2026.

Limits in force (265)

Parameter	Statistic	Limit	Months	Outfall
BOD, 5-day, 20 deg. C	30-day average	≤ 12 mg/L	all year	001
BOD, 5-day, 20 deg. C	daily maximum	≤ 31 mg/L	all year	001
BOD, 5-day, 20 deg. C	30-day average	≤ 187 lb/d	all year	001
BOD, 5-day, 20 deg. C	daily maximum	≤ 496 lb/d	all year	001
BOD, 5-day, 20 deg. C	30-day average	report only (mg/L)	all year	001
BOD, 5-day, 20 deg. C	daily maximum	report only (mg/L)	all year	001
BOD, 5-day, 20 deg. C	30-day average	report only (lb/d)	all year	001
BOD, 5-day, 20 deg. C	daily maximum	report only (lb/d)	all year	001
pH	daily minimum	≥ 6.4 SU	all year	001
pH	daily maximum	≤ 9 SU	all year	001
pH	30-day average	report only (SU)	all year	001
pH	daily maximum	report only (SU)	all year	001
Solids, total suspended	30-day average	≤ 18 mg/L	all year	001
Solids, total suspended	daily maximum	≤ 57 mg/L	all year	001
Solids, total suspended	30-day average	≤ 283 lb/d	all year	001
Solids, total suspended	daily maximum	≤ 905 lb/d	all year	001
Solids, total suspended	30-day average	report only (mg/L)	all year	001
Solids, total suspended	daily maximum	report only (mg/L)	all year	001
Solids, total suspended	30-day average	report only (lb/d)	all year	001
Solids, total suspended	daily maximum	report only (lb/d)	all year	001
Nitrogen, total [as N]	30-day average	report only (mg/L)	all year	001
Nitrogen, total [as N]	daily maximum	report only (mg/L)	all year	001
Nitrogen, total [as N]	30-day average	report only (lb/d)	all year	001
Nitrogen, total [as N]	daily maximum	report only (lb/d)	all year	001
Nitrogen, Kjeldahl, total [as N]	30-day average	report only (mg/L)	all year	001
Nitrogen, Kjeldahl, total [as N]	daily maximum	report only (mg/L)	all year	001
Nitrogen, Kjeldahl, total [as N]	30-day average	report only (lb/d)	all year	001
Nitrogen, Kjeldahl, total [as N]	daily maximum	report only (lb/d)	all year	001
Phosphorus, total [as P]	30-day average	report only (mg/L)	all year	001
Phosphorus, total [as P]	daily maximum	report only (mg/L)	all year	001
Phosphorus, total [as P]	30-day average	report only (lb/d)	all year	001
Phosphorus, total [as P]	daily maximum	report only (lb/d)	all year	001
Polynuclear Aromatic Hydrocarbons [PAHs]	30-day average	≤ .0074 mg/L	all year	001
Polynuclear Aromatic Hydrocarbons [PAHs]	daily maximum	≤ .0395 mg/L	all year	001
Polynuclear Aromatic Hydrocarbons [PAHs]	30-day average	≤ .187 lb/d	all year	001
Polynuclear Aromatic Hydrocarbons [PAHs]	daily maximum	≤ .876 lb/d	all year	001
Carbon tetrachloride	30-day average	≤ .0074 mg/L	all year	001
Carbon tetrachloride	daily maximum	≤ .0156 mg/L	all year	001
Carbon tetrachloride	30-day average	≤ .117 lb/d	all year	001
Carbon tetrachloride	daily maximum	≤ .246 lb/d	all year	001
1,2-Dichloroethane	30-day average	≤ .028 mg/L	all year	001
1,2-Dichloroethane	daily maximum	≤ .0867 mg/L	all year	001
1,2-Dichloroethane	30-day average	≤ .441 lb/d	all year	001
1,2-Dichloroethane	daily maximum	≤ 1.37 lb/d	all year	001
Chloroform	30-day average	≤ .0086 mg/L	all year	001
Chloroform	daily maximum	≤ .0189 mg/L	all year	001
Chloroform	30-day average	≤ .136 lb/d	all year	001
Chloroform	daily maximum	≤ .298 lb/d	all year	001
Toluene	30-day average	≤ .0107 mg/L	all year	001
Toluene	daily maximum	≤ .0329 mg/L	all year	001
Toluene	30-day average	≤ .168 lb/d	all year	001
Toluene	daily maximum	≤ .518 lb/d	all year	001
Benzene	30-day average	≤ .0152 mg/L	all year	001
Benzene	daily maximum	≤ .0559 mg/L	all year	001
Benzene	30-day average	≤ .24 lb/d	all year	001
Benzene	daily maximum	≤ .881 lb/d	all year	001
Acenaphthylene	30-day average	≤ .009 mg/L	all year	001
Acenaphthylene	daily maximum	≤ .0243 mg/L	all year	001
Acenaphthylene	30-day average	≤ .143 lb/d	all year	001
Acenaphthylene	daily maximum	≤ .382 lb/d	all year	001
Acenaphthene	30-day average	≤ .009 mg/L	all year	001
Acenaphthene	daily maximum	≤ .0243 mg/L	all year	001
Acenaphthene	30-day average	≤ .143 lb/d	all year	001
Acenaphthene	daily maximum	≤ .382 lb/d	all year	001
Acrylonitrile	30-day average	≤ .0395 mg/L	all year	001
Acrylonitrile	daily maximum	≤ .0995 mg/L	all year	001
Acrylonitrile	30-day average	≤ .622 lb/d	all year	001
Acrylonitrile	daily maximum	≤ 1.57 lb/d	all year	001
Anthracene	30-day average	≤ .009 mg/L	all year	001
Anthracene	daily maximum	≤ .0243 mg/L	all year	001
Anthracene	30-day average	≤ .143 lb/d	all year	001
Anthracene	daily maximum	≤ .382 lb/d	all year	001
Benzo[b]fluoranthene	30-day average	≤ .0095 mg/L	all year	001
Benzo[b]fluoranthene	daily maximum	≤ .0251 mg/L	all year	001
Benzo[b]fluoranthene	30-day average	≤ .149 lb/d	all year	001
Benzo[b]fluoranthene	daily maximum	≤ .395 lb/d	all year	001
Benzo[k]fluoranthene	30-day average	≤ .009 mg/L	all year	001
Benzo[k]fluoranthene	daily maximum	≤ .0243 mg/L	all year	001
Benzo[k]fluoranthene	30-day average	≤ .143 lb/d	all year	001
Benzo[k]fluoranthene	daily maximum	≤ .382 lb/d	all year	001
Benzo[a]pyrene	30-day average	≤ .004732 mg/L	all year	001
Benzo[a]pyrene	daily maximum	≤ .004732 mg/L	all year	001
Benzo[a]pyrene	30-day average	≤ .06979 lb/d	all year	001
Benzo[a]pyrene	daily maximum	≤ .06979 lb/d	all year	001
Chlorobenzene	30-day average	≤ .0062 mg/L	all year	001
Chlorobenzene	daily maximum	≤ .0115 mg/L	all year	001
Chlorobenzene	30-day average	≤ .097 lb/d	all year	001
Chlorobenzene	daily maximum	≤ .181 lb/d	all year	001
Chrysene	30-day average	≤ .009 mg/L	all year	001
Chrysene	daily maximum	≤ .0243 mg/L	all year	001
Chrysene	30-day average	≤ .143 lb/d	all year	001
Chrysene	daily maximum	≤ .382 lb/d	all year	001
Diethyl phthalate	30-day average	≤ .0333 mg/L	all year	001
Diethyl phthalate	daily maximum	≤ .0835 mg/L	all year	001
Diethyl phthalate	30-day average	≤ .525 lb/d	all year	001
Diethyl phthalate	daily maximum	≤ 1.32 lb/d	all year	001
Dimethyl phthalate	30-day average	≤ .0078 mg/L	all year	001
Dimethyl phthalate	daily maximum	≤ .0193 mg/L	all year	001
Dimethyl phthalate	30-day average	≤ .123 lb/d	all year	001
Dimethyl phthalate	daily maximum	≤ .305 lb/d	all year	001
Ethylbenzene	30-day average	≤ .0132 mg/L	all year	001
Ethylbenzene	daily maximum	≤ .0444 mg/L	all year	001
Ethylbenzene	30-day average	≤ .207 lb/d	all year	001
Ethylbenzene	daily maximum	≤ .7 lb/d	all year	001
Fluoranthene	30-day average	≤ .0103 mg/L	all year	001
Fluoranthene	daily maximum	≤ .028 mg/L	all year	001
Fluoranthene	30-day average	≤ .162 lb/d	all year	001
Fluoranthene	daily maximum	≤ .441 lb/d	all year	001
Fluorene	30-day average	≤ .009 mg/L	all year	001
Fluorene	daily maximum	≤ .0243 mg/L	all year	001
Fluorene	30-day average	≤ .143 lb/d	all year	001
Fluorene	daily maximum	≤ .382 lb/d	all year	001
Hexachloroethane	30-day average	≤ .0086 mg/L	all year	001
Hexachloroethane	daily maximum	≤ .0222 mg/L	all year	001
Hexachloroethane	30-day average	≤ .136 lb/d	all year	001
Hexachloroethane	daily maximum	≤ .35 lb/d	all year	001
Methyl chloride [Chloromethane]	30-day average	≤ .0354 mg/L	all year	001
Methyl chloride [Chloromethane]	daily maximum	≤ .0781 mg/L	all year	001
Methyl chloride [Chloromethane]	30-day average	≤ .557 lb/d	all year	001
Methyl chloride [Chloromethane]	daily maximum	≤ 1.23 lb/d	all year	001
Methylene chloride	30-day average	≤ .0164 mg/L	all year	001
Methylene chloride	daily maximum	≤ .0366 mg/L	all year	001
Methylene chloride	30-day average	≤ .259 lb/d	all year	001
Methylene chloride	daily maximum	≤ .577 lb/d	all year	001
Nitrobenzene	30-day average	≤ .0111 mg/L	all year	001
Nitrobenzene	daily maximum	≤ .028 mg/L	all year	001
Nitrobenzene	30-day average	≤ .175 lb/d	all year	001
Nitrobenzene	daily maximum	≤ .441 lb/d	all year	001
Phenanthrene	30-day average	≤ .009 mg/L	all year	001
Phenanthrene	daily maximum	≤ .0243 mg/L	all year	001
Phenanthrene	30-day average	≤ .143 lb/d	all year	001
Phenanthrene	daily maximum	≤ .382 lb/d	all year	001
Pyrene	30-day average	≤ .0103 mg/L	all year	001
Pyrene	daily maximum	≤ .0275 mg/L	all year	001
Pyrene	30-day average	≤ .162 lb/d	all year	001
Pyrene	daily maximum	≤ .434 lb/d	all year	001
1,1-Dichloroethane	30-day average	≤ .009 mg/L	all year	001
1,1-Dichloroethane	daily maximum	≤ .0243 mg/L	all year	001
1,1-Dichloroethane	30-day average	≤ .143 lb/d	all year	001
1,1-Dichloroethane	daily maximum	≤ .382 lb/d	all year	001
1,1-Dichloroethylene	30-day average	≤ .0066 mg/L	all year	001
1,1-Dichloroethylene	daily maximum	≤ .0103 mg/L	all year	001
1,1-Dichloroethylene	30-day average	≤ .104 lb/d	all year	001
1,1-Dichloroethylene	daily maximum	≤ .162 lb/d	all year	001
1,1,1-Trichloroethane	30-day average	≤ .0086 mg/L	all year	001
1,1,1-Trichloroethane	daily maximum	≤ .0222 mg/L	all year	001
1,1,1-Trichloroethane	30-day average	≤ .136 lb/d	all year	001
1,1,1-Trichloroethane	daily maximum	≤ .35 lb/d	all year	001
1,1,2-Trichloroethane	30-day average	≤ .0086 mg/L	all year	001
1,1,2-Trichloroethane	daily maximum	≤ .0222 mg/L	all year	001
1,1,2-Trichloroethane	30-day average	≤ .136 lb/d	all year	001
1,1,2-Trichloroethane	daily maximum	≤ .35 lb/d	all year	001
Benzo[a]anthracene	30-day average	≤ .009 mg/L	all year	001
Benzo[a]anthracene	daily maximum	≤ .0243 mg/L	all year	001
Benzo[a]anthracene	30-day average	≤ .143 lb/d	all year	001
Benzo[a]anthracene	daily maximum	≤ .382 lb/d	all year	001
1,2-Dichlorobenzene	30-day average	≤ .0317 mg/L	all year	001
1,2-Dichlorobenzene	daily maximum	≤ .067 mg/L	all year	001
1,2-Dichlorobenzene	30-day average	≤ .499 lb/d	all year	001
1,2-Dichlorobenzene	daily maximum	≤ .106 lb/d	all year	001
1,2-Dichloropropane	30-day average	≤ .0629 mg/L	all year	001
1,2-Dichloropropane	daily maximum	≤ .0946 mg/L	all year	001
1,2-Dichloropropane	30-day average	≤ .991 lb/d	all year	001
1,2-Dichloropropane	daily maximum	≤ 1.49 lb/d	all year	001
trans-1,2-Dichloroethylene	30-day average	≤ .0086 mg/L	all year	001
trans-1,2-Dichloroethylene	daily maximum	≤ .0222 mg/L	all year	001
trans-1,2-Dichloroethylene	30-day average	≤ .136 lb/d	all year	001
trans-1,2-Dichloroethylene	daily maximum	≤ .35 lb/d	all year	001
1,2,4-Trichlorobenzene	30-day average	≤ .028 mg/L	all year	001
1,2,4-Trichlorobenzene	daily maximum	≤ .0576 mg/L	all year	001
1,2,4-Trichlorobenzene	30-day average	≤ .441 lb/d	all year	001
1,2,4-Trichlorobenzene	daily maximum	≤ .907 lb/d	all year	001
1,3-Dichlorobenzene	30-day average	≤ .0127 mg/L	all year	001
1,3-Dichlorobenzene	daily maximum	≤ .0181 mg/L	all year	001
1,3-Dichlorobenzene	30-day average	≤ .201 lb/d	all year	001
1,3-Dichlorobenzene	daily maximum	≤ .285 lb/d	all year	001
1,4-Dichlorobenzene	30-day average	≤ .0062 mg/L	all year	001
1,4-Dichlorobenzene	daily maximum	≤ .0115 mg/L	all year	001
1,4-Dichlorobenzene	30-day average	≤ .097 lb/d	all year	001
1,4-Dichlorobenzene	daily maximum	≤ .181 lb/d	all year	001
2-Chlorophenol	30-day average	≤ .0127 mg/L	all year	001
2-Chlorophenol	daily maximum	≤ .0403 mg/L	all year	001
2-Chlorophenol	30-day average	≤ .201 lb/d	all year	001
2-Chlorophenol	daily maximum	≤ .635 lb/d	all year	001
2-Nitrophenol	30-day average	≤ .0169 mg/L	all year	001
2-Nitrophenol	daily maximum	≤ .0284 mg/L	all year	001
2-Nitrophenol	30-day average	≤ .266 lb/d	all year	001
2-Nitrophenol	daily maximum	≤ .447 lb/d	all year	001
2,4-Dichlorophenol	30-day average	≤ .016 mg/L	all year	001
2,4-Dichlorophenol	daily maximum	≤ .046 mg/L	all year	001
2,4-Dichlorophenol	30-day average	≤ .253 lb/d	all year	001
2,4-Dichlorophenol	daily maximum	≤ .726 lb/d	all year	001
2,4-Dimethylphenol	30-day average	≤ .0074 mg/L	all year	001
2,4-Dimethylphenol	daily maximum	≤ .0148 mg/L	all year	001
2,4-Dimethylphenol	30-day average	≤ .117 lb/d	all year	001
2,4-Dimethylphenol	daily maximum	≤ .233 lb/d	all year	001
2,4-Dinitrotoluene	30-day average	≤ .0465 mg/L	all year	001
2,4-Dinitrotoluene	daily maximum	≤ .117 mg/L	all year	001
2,4-Dinitrotoluene	30-day average	≤ .732 lb/d	all year	001
2,4-Dinitrotoluene	daily maximum	≤ 1.85 lb/d	all year	001
2,4-Dinitrophenol	30-day average	≤ .0292 mg/L	all year	001
2,4-Dinitrophenol	daily maximum	≤ .0506 mg/L	all year	001
2,4-Dinitrophenol	30-day average	≤ .46 lb/d	all year	001
2,4-Dinitrophenol	daily maximum	≤ .797 lb/d	all year	001
2,6-Dinitrotoluene	30-day average	≤ .105 mg/L	all year	001
2,6-Dinitrotoluene	daily maximum	≤ .264 mg/L	all year	001
2,6-Dinitrotoluene	30-day average	≤ 1.65 lb/d	all year	001
2,6-Dinitrotoluene	daily maximum	≤ 4.15 lb/d	all year	001
4-Nitrophenol	30-day average	≤ .0296 mg/L	all year	001
4-Nitrophenol	daily maximum	≤ .051 mg/L	all year	001
4-Nitrophenol	30-day average	≤ .467 lb/d	all year	001
4-Nitrophenol	daily maximum	≤ .804 lb/d	all year	001
4,6-Dinitro-o-cresol	30-day average	≤ .0321 mg/L	all year	001
4,6-Dinitro-o-cresol	daily maximum	≤ .114 mg/L	all year	001
4,6-Dinitro-o-cresol	30-day average	≤ .505 lb/d	all year	001
4,6-Dinitro-o-cresol	daily maximum	≤ 1.8 lb/d	all year	001
Phenol	30-day average	≤ .0062 mg/L	all year	001
Phenol	daily maximum	≤ .0107 mg/L	all year	001
Phenol	30-day average	≤ .097 lb/d	all year	001
Phenol	daily maximum	≤ .168 lb/d	all year	001
Naphthalene	30-day average	≤ .009 mg/L	all year	001
Naphthalene	daily maximum	≤ .0243 mg/L	all year	001
Naphthalene	30-day average	≤ .143 lb/d	all year	001
Naphthalene	daily maximum	≤ .382 lb/d	all year	001
Di[2-ethylhexyl] phthalate [DEHP]	30-day average	≤ .0423 mg/L	all year	001
Di[2-ethylhexyl] phthalate [DEHP]	daily maximum	≤ .115 mg/L	all year	001
Di[2-ethylhexyl] phthalate [DEHP]	30-day average	≤ .667 lb/d	all year	001
Di[2-ethylhexyl] phthalate [DEHP]	daily maximum	≤ 1.81 lb/d	all year	001
Di-n-butyl phthalate	30-day average	≤ .0111 mg/L	all year	001
Di-n-butyl phthalate	daily maximum	≤ .0234 mg/L	all year	001
Di-n-butyl phthalate	30-day average	≤ .175 lb/d	all year	001
Di-n-butyl phthalate	daily maximum	≤ .369 lb/d	all year	001
Vinyl chloride	30-day average	≤ .0428 mg/L	all year	001
Vinyl chloride	daily maximum	≤ .11 mg/L	all year	001
Vinyl chloride	30-day average	≤ .674 lb/d	all year	001
Vinyl chloride	daily maximum	≤ 1.74 lb/d	all year	001
Hexachlorobenzene	30-day average	≤ .0000762 mg/L	all year	001
Hexachlorobenzene	daily maximum	≤ .0000762 mg/L	all year	001
Hexachlorobenzene	30-day average	≤ .001124 lb/d	all year	001
Hexachlorobenzene	daily maximum	≤ .001124 lb/d	all year	001
Hexachlorobutadiene	30-day average	≤ .0082 mg/L	all year	001
Hexachlorobutadiene	daily maximum	≤ .0201 mg/L	all year	001
Hexachlorobutadiene	30-day average	≤ .13 lb/d	all year	001
Hexachlorobutadiene	daily maximum	≤ .318 lb/d	all year	001
E. coli	geometric mean	≤ 126 #/100mL	Mar–Nov	001
1,3-Dichloropropylene	30-day average	≤ .0119 mg/L	all year	001
1,3-Dichloropropylene	daily maximum	≤ .0181 mg/L	all year	001
1,3-Dichloropropylene	30-day average	≤ .188 lb/d	all year	001
1,3-Dichloropropylene	daily maximum	≤ .285 lb/d	all year	001
Toxicity [acute], Ceriodaphnia dubia	daily maximum	≤ 1 N=0;Y=1	all year	001
Toxicity [acute], Pimephales promelas [Fathead Minnow]	daily maximum	≤ 1 N=0;Y=1	all year	001
Tetrachloroethene	30-day average	≤ .009 mg/L	all year	001
Tetrachloroethene	daily maximum	≤ .023 mg/L	all year	001
Tetrachloroethene	30-day average	≤ .143 lb/d	all year	001
Tetrachloroethene	daily maximum	≤ .363 lb/d	all year	001
Trichloroethene	30-day average	≤ .0086 mg/L	all year	001
Trichloroethene	daily maximum	≤ .0222 mg/L	all year	001
Trichloroethene	30-day average	≤ .136 lb/d	all year	001
Trichloroethene	daily maximum	≤ .35 lb/d	all year	001
Chloroethane	30-day average	≤ .0428 mg/L	all year	001
Chloroethane	daily maximum	≤ .11 mg/L	all year	001
Chloroethane	30-day average	≤ .674 lb/d	all year	001
Chloroethane	daily maximum	≤ 1.74 lb/d	all year	001
Chromium, total [as Cr]	30-day average	≤ .032 lb/d	all year	008
Chromium, total [as Cr]	daily maximum	≤ .079 lb/d	all year	008

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/IA0000191 · MCP: https://passage-data.com/mcp