DuPont Specialty Products USA LLC — NPDES permit OH0006327: limits, due date and EPA's record

Plastics Materials And Resins, major discharger, Circleville, Ohio. NPDES permit OH0006327 expired Jan 31, 2025; its limits still apply. Last 12 months: no values over a limit, 4 of 44 reports late. Source: EPA ECHO, Oct 22, 2026.

Limits in force (270)

Parameter	Statistic	Limit	Months	Outfall
Oxygen demand, chem. [low level] [COD]	monthly average	report only (mg/L)	all year	001
Oxygen demand, chem. [low level] [COD]	daily maximum	report only (mg/L)	all year	001
pH	daily minimum	≥ 6.5 SU	all year	001
pH	daily maximum	≤ 9 SU	all year	001
Solids, total suspended	monthly average	report only (mg/L)	all year	001
Solids, total suspended	daily maximum	report only (mg/L)	all year	001
Nitrogen, ammonia total [as N]	monthly average	report only (mg/L)	all year	001
Nitrogen, ammonia total [as N]	daily maximum	report only (mg/L)	all year	001
Copper, total recoverable	monthly average	report only (ug/L)	Mar, Jun, Aug, Dec	001
Copper, total recoverable	daily maximum	report only (ug/L)	Mar, Jun, Aug, Dec	001
Oxidants, total residual	daily maximum	≤ .01 mg/L	all year	001
Oxidants, total residual	daily maximum	≤ .076 kg/d	all year	001
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	001
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	001
Chlorine, total residual	daily maximum	≤ .038 mg/L	all year	001
Chlorine, total residual	daily maximum	≤ .29 kg/d	all year	001
Perfluorooctanoic acid (PFOA)	monthly average	report only (ug/L)	Jun, Dec	001
Perfluorooctanoic acid (PFOA)	daily maximum	report only (ug/L)	Jun, Dec	001
BOD, carbonaceous [5 day, 20 C]	monthly average	report only (mg/L)	all year	001
BOD, carbonaceous [5 day, 20 C]	daily maximum	report only (mg/L)	all year	001
1,4-Dioxane	monthly average	report only (mg/L)	Jun, Dec	001
1,4-Dioxane	daily maximum	report only (mg/L)	Jun, Dec	001
Oxygen demand, chem. [low level] [COD]	monthly average	report only (mg/L)	all year	602
Oxygen demand, chem. [low level] [COD]	daily maximum	report only (mg/L)	all year	602
Solids, total suspended	monthly average	≤ 29 mg/L	all year	602
Solids, total suspended	daily maximum	≤ 87 mg/L	all year	602
Solids, total suspended	monthly average	≤ 164 kg/d	all year	602
Solids, total suspended	daily maximum	≤ 491 kg/d	all year	602
Oil and grease, hexane extr method	daily maximum	≤ 10 mg/L	all year	602
Oil and grease, hexane extr method	daily maximum	≤ 56.4 kg/d	all year	602
Carbon tetrachloride	monthly average	≤ 10 ug/L	Jun, Dec	602
Carbon tetrachloride	daily maximum	≤ 21 ug/L	Jun, Dec	602
Carbon tetrachloride	monthly average	≤ .056 kg/d	Jun, Dec	602
Carbon tetrachloride	daily maximum	≤ .12 kg/d	Jun, Dec	602
1,2-Dichloroethane	monthly average	≤ 38 ug/L	Jun, Dec	602
1,2-Dichloroethane	daily maximum	≤ 117 ug/L	Jun, Dec	602
1,2-Dichloroethane	monthly average	≤ .21 kg/d	Jun, Dec	602
1,2-Dichloroethane	daily maximum	≤ .66 kg/d	Jun, Dec	602
Chloroform	monthly average	≤ 12 ug/L	Jun, Dec	602
Chloroform	daily maximum	≤ 25 ug/L	Jun, Dec	602
Chloroform	monthly average	≤ .065 kg/d	Jun, Dec	602
Chloroform	daily maximum	≤ .14 kg/d	Jun, Dec	602
Toluene	monthly average	≤ 14 ug/L	Jun, Dec	602
Toluene	daily maximum	≤ 44 ug/L	Jun, Dec	602
Toluene	monthly average	≤ .081 kg/d	Jun, Dec	602
Toluene	daily maximum	≤ .25 kg/d	Jun, Dec	602
Benzene	monthly average	≤ 20 ug/L	Jun, Dec	602
Benzene	daily maximum	≤ 75 ug/L	Jun, Dec	602
Benzene	monthly average	≤ .12 kg/d	Jun, Dec	602
Benzene	daily maximum	≤ .42 kg/d	Jun, Dec	602
Acenaphthylene	monthly average	≤ 12 ug/L	Jun, Dec	602
Acenaphthylene	daily maximum	≤ 33 ug/L	Jun, Dec	602
Acenaphthylene	monthly average	≤ .069 kg/d	Jun, Dec	602
Acenaphthylene	daily maximum	≤ .18 kg/d	Jun, Dec	602
Acenaphthene	monthly average	≤ 12 ug/L	Jun, Dec	602
Acenaphthene	daily maximum	≤ 33 ug/L	Jun, Dec	602
Acenaphthene	monthly average	≤ .069 kg/d	Jun, Dec	602
Acenaphthene	daily maximum	≤ .18 kg/d	Jun, Dec	602
Acrylonitrile	monthly average	≤ 53 ug/L	Jun, Dec	602
Acrylonitrile	daily maximum	≤ 134 ug/L	Jun, Dec	602
Acrylonitrile	monthly average	≤ .3 kg/d	Jun, Dec	602
Acrylonitrile	daily maximum	≤ .75 kg/d	Jun, Dec	602
Anthracene	daily maximum	≤ .45 ug/L	Jun, Dec	602
Anthracene	daily maximum	≤ .0027 kg/d	Jun, Dec	602
Benzo[b]fluoranthene	monthly average	≤ 13 ug/L	Jun, Dec	602
Benzo[b]fluoranthene	daily maximum	≤ 34 ug/L	Jun, Dec	602
Benzo[b]fluoranthene	monthly average	≤ .072 kg/d	Jun, Dec	602
Benzo[b]fluoranthene	daily maximum	≤ .19 kg/d	Jun, Dec	602
Benzo[k]fluoranthene	monthly average	≤ 12 ug/L	Jun, Dec	602
Benzo[k]fluoranthene	daily maximum	≤ 33 ug/L	Jun, Dec	602
Benzo[k]fluoranthene	monthly average	≤ .069 kg/d	Jun, Dec	602
Benzo[k]fluoranthene	daily maximum	≤ .18 kg/d	Jun, Dec	602
Benzo[a]pyrene	monthly average	≤ 13 ug/L	Jun, Dec	602
Benzo[a]pyrene	daily maximum	≤ 34 ug/L	Jun, Dec	602
Benzo[a]pyrene	monthly average	≤ .072 kg/d	Jun, Dec	602
Benzo[a]pyrene	daily maximum	≤ .19 kg/d	Jun, Dec	602
Chlorobenzene	monthly average	≤ 8 ug/L	Jun, Dec	602
Chlorobenzene	daily maximum	≤ 15 ug/L	Jun, Dec	602
Chlorobenzene	monthly average	≤ .047 kg/d	Jun, Dec	602
Chlorobenzene	daily maximum	≤ .087 kg/d	Jun, Dec	602
Chrysene	monthly average	≤ 12 ug/L	Jun, Dec	602
Chrysene	daily maximum	≤ 33 ug/L	Jun, Dec	602
Chrysene	monthly average	≤ .069 kg/d	Jun, Dec	602
Chrysene	daily maximum	≤ .18 kg/d	Jun, Dec	602
Diethyl phthalate	monthly average	≤ 45 ug/L	Jun, Dec	602
Diethyl phthalate	daily maximum	≤ 112 ug/L	Jun, Dec	602
Diethyl phthalate	monthly average	≤ .25 kg/d	Jun, Dec	602
Diethyl phthalate	daily maximum	≤ .63 kg/d	Jun, Dec	602
Dimethyl phthalate	monthly average	≤ 11 ug/L	Jun, Dec	602
Dimethyl phthalate	daily maximum	≤ 26 ug/L	Jun, Dec	602
Dimethyl phthalate	monthly average	≤ .059 kg/d	Jun, Dec	602
Dimethyl phthalate	daily maximum	≤ .15 kg/d	Jun, Dec	602
Ethylbenzene	monthly average	≤ 18 ug/L	Jun, Dec	602
Ethylbenzene	daily maximum	≤ 60 ug/L	Jun, Dec	602
Ethylbenzene	monthly average	≤ .1 kg/d	Jun, Dec	602
Ethylbenzene	daily maximum	≤ .34 kg/d	Jun, Dec	602
Fluoranthene	daily maximum	≤ 9.48 ug/L	Jun, Dec	602
Fluoranthene	daily maximum	≤ .056 kg/d	Jun, Dec	602
Fluorene	monthly average	≤ 12 ug/L	Jun, Dec	602
Fluorene	daily maximum	≤ 33 ug/L	Jun, Dec	602
Fluorene	monthly average	≤ .069 kg/d	Jun, Dec	602
Fluorene	daily maximum	≤ .18 kg/d	Jun, Dec	602
Hexachloroethane	monthly average	≤ 12 ug/L	Jun, Dec	602
Hexachloroethane	daily maximum	≤ 30 ug/L	Jun, Dec	602
Hexachloroethane	monthly average	≤ .065 kg/d	Jun, Dec	602
Hexachloroethane	daily maximum	≤ .17 kg/d	Jun, Dec	602
Methyl chloride [Chloromethane]	monthly average	≤ 48 ug/L	Jun, Dec	602
Methyl chloride [Chloromethane]	daily maximum	≤ 105 ug/L	Jun, Dec	602
Methyl chloride [Chloromethane]	monthly average	≤ .27 kg/d	Jun, Dec	602
Methyl chloride [Chloromethane]	daily maximum	≤ .59 kg/d	Jun, Dec	602
Methylene chloride	monthly average	≤ 22 ug/L	Jun, Dec	602
Methylene chloride	daily maximum	≤ 49 ug/L	Jun, Dec	602
Methylene chloride	monthly average	≤ .12 kg/d	Jun, Dec	602
Methylene chloride	daily maximum	≤ .28 kg/d	Jun, Dec	602
Nitrobenzene	monthly average	≤ 15 ug/L	Jun, Dec	602
Nitrobenzene	daily maximum	≤ 38 ug/L	Jun, Dec	602
Nitrobenzene	monthly average	≤ .084 kg/d	Jun, Dec	602
Nitrobenzene	daily maximum	≤ .21 kg/d	Jun, Dec	602
Phenanthrene	monthly average	≤ 12 ug/L	Jun, Dec	602
Phenanthrene	daily maximum	≤ 33 ug/L	Jun, Dec	602
Phenanthrene	monthly average	≤ .069 kg/d	Jun, Dec	602
Phenanthrene	daily maximum	≤ .18 kg/d	Jun, Dec	602
Pyrene	monthly average	≤ 14 ug/L	Jun, Dec	602
Pyrene	daily maximum	≤ 37 ug/L	Jun, Dec	602
Pyrene	monthly average	≤ .078 kg/d	Jun, Dec	602
Pyrene	daily maximum	≤ .21 kg/d	Jun, Dec	602
Tetrachloroethylene	monthly average	≤ 12 ug/L	Jun, Dec	602
Tetrachloroethylene	daily maximum	≤ 31 ug/L	Jun, Dec	602
Tetrachloroethylene	monthly average	≤ .069 kg/d	Jun, Dec	602
Tetrachloroethylene	daily maximum	≤ .17 kg/d	Jun, Dec	602
1,1-Dichloroethane	monthly average	≤ 12 ug/L	Jun, Dec	602
1,1-Dichloroethane	daily maximum	≤ 33 ug/L	Jun, Dec	602
1,1-Dichloroethane	monthly average	≤ .069 kg/d	Jun, Dec	602
1,1-Dichloroethane	daily maximum	≤ .18 kg/d	Jun, Dec	602
1,1-Dichloroethylene	monthly average	≤ 9 ug/L	Jun, Dec	602
1,1-Dichloroethylene	daily maximum	≤ 14 ug/L	Jun, Dec	602
1,1-Dichloroethylene	monthly average	≤ .05 kg/d	Jun, Dec	602
1,1-Dichloroethylene	daily maximum	≤ .078 kg/d	Jun, Dec	602
1,1,1-Trichloroethane	monthly average	≤ 12 ug/L	Jun, Dec	602
1,1,1-Trichloroethane	daily maximum	≤ 30 ug/L	Jun, Dec	602
1,1,1-Trichloroethane	monthly average	≤ .065 kg/d	Jun, Dec	602
1,1,1-Trichloroethane	daily maximum	≤ .17 kg/d	Jun, Dec	602
1,1,2-Trichloroethane	monthly average	≤ 12 ug/L	Jun, Dec	602
1,1,2-Trichloroethane	daily maximum	≤ 30 ug/L	Jun, Dec	602
1,1,2-Trichloroethane	monthly average	≤ .065 kg/d	Jun, Dec	602
1,1,2-Trichloroethane	daily maximum	≤ .17 kg/d	Jun, Dec	602
Benzo[a]anthracene	monthly average	≤ 12 ug/L	Jun, Dec	602
Benzo[a]anthracene	daily maximum	≤ 33 ug/L	Jun, Dec	602
Benzo[a]anthracene	monthly average	≤ .069 kg/d	Jun, Dec	602
Benzo[a]anthracene	daily maximum	≤ .18 kg/d	Jun, Dec	602
1,2-Dichlorobenzene	monthly average	≤ 43 ug/L	Jun, Dec	602
1,2-Dichlorobenzene	daily maximum	≤ 90 ug/L	Jun, Dec	602
1,2-Dichlorobenzene	monthly average	≤ .24 kg/d	Jun, Dec	602
1,2-Dichlorobenzene	daily maximum	≤ .51 kg/d	Jun, Dec	602
1,2-Dichloropropane	monthly average	≤ 85 ug/L	Jun, Dec	602
1,2-Dichloropropane	daily maximum	≤ 127 ug/L	Jun, Dec	602
1,2-Dichloropropane	monthly average	≤ .48 kg/d	Jun, Dec	602
1,2-Dichloropropane	daily maximum	≤ .72 kg/d	Jun, Dec	602
trans-1,2-Dichloroethylene	monthly average	≤ 12 ug/L	Jun, Dec	602
trans-1,2-Dichloroethylene	daily maximum	≤ 30 ug/L	Jun, Dec	602
trans-1,2-Dichloroethylene	monthly average	≤ .065 kg/d	Jun, Dec	602
trans-1,2-Dichloroethylene	daily maximum	≤ .17 kg/d	Jun, Dec	602
1,2,4-Trichlorobenzene	monthly average	≤ 38 ug/L	Jun, Dec	602
1,2,4-Trichlorobenzene	daily maximum	≤ 77 ug/L	Jun, Dec	602
1,2,4-Trichlorobenzene	monthly average	≤ .21 kg/d	Jun, Dec	602
1,2,4-Trichlorobenzene	daily maximum	≤ .44 kg/d	Jun, Dec	602
1,3-Dichlorobenzene	monthly average	≤ 17 ug/L	Jun, Dec	602
1,3-Dichlorobenzene	daily maximum	≤ 24 ug/L	Jun, Dec	602
1,3-Dichlorobenzene	monthly average	≤ .097 kg/d	Jun, Dec	602
1,3-Dichlorobenzene	daily maximum	≤ .14 kg/d	Jun, Dec	602
1,4-Dichlorobenzene	monthly average	≤ 8 ug/L	Jun, Dec	602
1,4-Dichlorobenzene	daily maximum	≤ 15 ug/L	Jun, Dec	602
1,4-Dichlorobenzene	monthly average	≤ .047 kg/d	Jun, Dec	602
1,4-Dichlorobenzene	daily maximum	≤ .087 kg/d	Jun, Dec	602
2-Chlorophenol	monthly average	≤ 17 ug/L	Jun, Dec	602
2-Chlorophenol	daily maximum	≤ 54 ug/L	Jun, Dec	602
2-Chlorophenol	monthly average	≤ .097 kg/d	Jun, Dec	602
2-Chlorophenol	daily maximum	≤ .31 kg/d	Jun, Dec	602
2-Nitrophenol	monthly average	≤ 23 ug/L	Jun, Dec	602
2-Nitrophenol	daily maximum	≤ 38 ug/L	Jun, Dec	602
2-Nitrophenol	monthly average	≤ .13 kg/d	Jun, Dec	602
2-Nitrophenol	daily maximum	≤ .22 kg/d	Jun, Dec	602
2,4-Dichlorophenol	monthly average	≤ 22 ug/L	Jun, Dec	602
2,4-Dichlorophenol	daily maximum	≤ 62 ug/L	Jun, Dec	602
2,4-Dichlorophenol	monthly average	≤ .12 kg/d	Jun, Dec	602
2,4-Dichlorophenol	daily maximum	≤ .35 kg/d	Jun, Dec	602
2,4-Dimethylphenol	monthly average	≤ 10 ug/L	Jun, Dec	602
2,4-Dimethylphenol	daily maximum	≤ 20 ug/L	Jun, Dec	602
2,4-Dimethylphenol	monthly average	≤ .056 kg/d	Jun, Dec	602
2,4-Dimethylphenol	daily maximum	≤ .11 kg/d	Jun, Dec	602
2,4-Dinitrotoluene	monthly average	≤ 62 ug/L	Jun, Dec	602
2,4-Dinitrotoluene	daily maximum	≤ 158 ug/L	Jun, Dec	602
2,4-Dinitrotoluene	monthly average	≤ .35 kg/d	Jun, Dec	602
2,4-Dinitrotoluene	daily maximum	≤ .89 kg/d	Jun, Dec	602
2,4-Dinitrophenol	monthly average	≤ 39 ug/L	Jun, Dec	602
2,4-Dinitrophenol	daily maximum	≤ 68 ug/L	Jun, Dec	602
2,4-Dinitrophenol	monthly average	≤ .22 kg/d	Jun, Dec	602
2,4-Dinitrophenol	daily maximum	≤ .38 kg/d	Jun, Dec	602
2,6-Dinitrotoluene	monthly average	≤ 141 ug/L	Jun, Dec	602
2,6-Dinitrotoluene	daily maximum	≤ 354 ug/L	Jun, Dec	602
2,6-Dinitrotoluene	monthly average	≤ .8 kg/d	Jun, Dec	602
2,6-Dinitrotoluene	daily maximum	≤ 2 kg/d	Jun, Dec	602
4-Nitrophenol	monthly average	≤ 40 ug/L	Jun, Dec	602
4-Nitrophenol	daily maximum	≤ 69 ug/L	Jun, Dec	602
4-Nitrophenol	monthly average	≤ .22 kg/d	Jun, Dec	602
4-Nitrophenol	daily maximum	≤ .39 kg/d	Jun, Dec	602
4,6-Dinitro-o-cresol	monthly average	≤ 43 ug/L	Jun, Dec	602
4,6-Dinitro-o-cresol	daily maximum	≤ 153 ug/L	Jun, Dec	602
4,6-Dinitro-o-cresol	monthly average	≤ .24 kg/d	Jun, Dec	602
4,6-Dinitro-o-cresol	daily maximum	≤ .86 kg/d	Jun, Dec	602
Phenol	monthly average	≤ 8 ug/L	Jun, Dec	602
Phenol	daily maximum	≤ 14 ug/L	Jun, Dec	602
Phenol	monthly average	≤ .047 kg/d	Jun, Dec	602
Phenol	daily maximum	≤ .081 kg/d	Jun, Dec	602
Naphthalene	monthly average	≤ 12 ug/L	Jun, Dec	602
Naphthalene	daily maximum	≤ 33 ug/L	Jun, Dec	602
Naphthalene	monthly average	≤ .069 kg/d	Jun, Dec	602
Naphthalene	daily maximum	≤ .18 kg/d	Jun, Dec	602
Di[2-ethylhexyl] phthalate [DEHP]	monthly average	≤ 57 ug/L	Jun, Dec	602
Di[2-ethylhexyl] phthalate [DEHP]	daily maximum	≤ 154 ug/L	Jun, Dec	602
Di[2-ethylhexyl] phthalate [DEHP]	monthly average	≤ .32 kg/d	Jun, Dec	602
Di[2-ethylhexyl] phthalate [DEHP]	daily maximum	≤ .87 kg/d	Jun, Dec	602
Di-n-butyl phthalate	monthly average	≤ 15 ug/L	Jun, Dec	602
Di-n-butyl phthalate	daily maximum	≤ 32 ug/L	Jun, Dec	602
Di-n-butyl phthalate	monthly average	≤ .084 kg/d	Jun, Dec	602
Di-n-butyl phthalate	daily maximum	≤ .18 kg/d	Jun, Dec	602
Vinyl chloride	monthly average	≤ 58 ug/L	Jun, Dec	602
Vinyl chloride	daily maximum	≤ 148 ug/L	Jun, Dec	602
Vinyl chloride	monthly average	≤ .32 kg/d	Jun, Dec	602
Vinyl chloride	daily maximum	≤ .84 kg/d	Jun, Dec	602
Trichloroethylene	monthly average	≤ 12 ug/L	Jun, Dec	602
Trichloroethylene	daily maximum	≤ 30 ug/L	Jun, Dec	602
Trichloroethylene	monthly average	≤ .065 kg/d	Jun, Dec	602
Trichloroethylene	daily maximum	≤ .17 kg/d	Jun, Dec	602
Hexachlorobenzene	monthly average	≤ 2.31 ug/L	Jun, Dec	602
Hexachlorobenzene	daily maximum	≤ 15 ug/L	Jun, Dec	602
Hexachlorobenzene	monthly average	≤ .014 kg/d	Jun, Dec	602
Hexachlorobenzene	daily maximum	≤ .087 kg/d	Jun, Dec	602
Hexachlorobutadiene	monthly average	≤ 11 ug/L	Jun, Dec	602
Hexachlorobutadiene	daily maximum	≤ 27 ug/L	Jun, Dec	602
Hexachlorobutadiene	monthly average	≤ .062 kg/d	Jun, Dec	602
Hexachlorobutadiene	daily maximum	≤ .15 kg/d	Jun, Dec	602
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	602
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	602
1,3-Dichloropropene	monthly average	≤ 16 ug/L	Jun, Dec	602
1,3-Dichloropropene	daily maximum	≤ 24 ug/L	Jun, Dec	602
1,3-Dichloropropene	monthly average	≤ .09 kg/d	Jun, Dec	602
1,3-Dichloropropene	daily maximum	≤ .14 kg/d	Jun, Dec	602
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ 20 mg/L	all year	602
BOD, carbonaceous [5 day, 20 C]	daily maximum	≤ 52 mg/L	all year	602
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ 113 kg/d	all year	602
BOD, carbonaceous [5 day, 20 C]	daily maximum	≤ 293 kg/d	all year	602
Chloroethane	monthly average	≤ 58 ug/L	Jun, Dec	602
Chloroethane	daily maximum	≤ 148 ug/L	Jun, Dec	602
Chloroethane	monthly average	≤ .32 kg/d	Jun, Dec	602
Chloroethane	daily maximum	≤ .84 kg/d	Jun, Dec	602
1,1-Dichloroethylene	monthly average	≤ 22 ug/L	all year	603
1,1-Dichloroethylene	daily maximum	≤ 60 ug/L	all year	603
1,1-Dichloroethylene	monthly average	≤ .096 kg/d	all year	603
1,1-Dichloroethylene	daily maximum	≤ .26 kg/d	all year	603
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	603
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	603
Oxygen demand, chem. [low level] [COD]	monthly average	report only (mg/L)	all year	604
Oxygen demand, chem. [low level] [COD]	daily maximum	report only (mg/L)	all year	604
Solids, total suspended	monthly average	report only (mg/L)	all year	604
Solids, total suspended	daily maximum	report only (mg/L)	all year	604
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	604
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	604
Acetone	monthly average	report only (ug/L)	all year	604
Acetone	daily maximum	report only (ug/L)	all year	604

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/OH0006327 · MCP: https://passage-data.com/mcp