Solvay Speciality Polymers USA LLC — NPDES permit OH0003905: limits, due date and EPA's record

Plastics Materials And Resins, major discharger, Marietta, Ohio. NPDES permit OH0003905, in force until Aug 31, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Limits in force (280)

Parameter	Statistic	Limit	Months	Outfall
Temperature, water deg. centigrade	monthly average	report only (deg C)	all year	001
Temperature, water deg. centigrade	daily maximum	report only (deg C)	all year	001
pH	daily minimum	≥ 6.5 SU	all year	001
pH	daily maximum	≤ 9 SU	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	Mar, Jun, Sep, Dec	001
BOD, 5-day, 20 deg. C	monthly average	≤ 15.84 mg/L	all year	002
BOD, 5-day, 20 deg. C	daily maximum	≤ 42.24 mg/L	all year	002
BOD, 5-day, 20 deg. C	monthly average	≤ 60.8 kg/d	all year	002
BOD, 5-day, 20 deg. C	daily maximum	≤ 162.1 kg/d	all year	002
Solids, total suspended	monthly average	≤ 26.4 mg/L	all year	002
Solids, total suspended	daily maximum	≤ 85.8 mg/L	all year	002
Solids, total suspended	monthly average	≤ 101.3 kg/d	all year	002
Solids, total suspended	daily maximum	≤ 329.3 kg/d	all year	002
Oil and grease, hexane extr method	daily maximum	≤ 10 mg/L	all year	002
Cyanide, total [as CN]	monthly average	≤ .277 mg/L	Sep	002
Cyanide, total [as CN]	daily maximum	≤ .792 mg/L	Sep	002
Cyanide, total [as CN]	monthly average	≤ 1.064 kg/d	Sep	002
Cyanide, total [as CN]	daily maximum	≤ 3.04 kg/d	Sep	002
Chromium, total [as Cr]	monthly average	≤ 732.6 ug/L	Sep	002
Chromium, total [as Cr]	daily maximum	≤ 1828.2 ug/L	Sep	002
Chromium, total [as Cr]	monthly average	≤ 2.812 kg/d	Sep	002
Chromium, total [as Cr]	daily maximum	≤ 7.017 kg/d	Sep	002
Lead, total [as Pb]	monthly average	≤ 211.2 ug/L	Sep	002
Lead, total [as Pb]	daily maximum	≤ 455.4 ug/L	Sep	002
Lead, total [as Pb]	monthly average	≤ .811 kg/d	Sep	002
Lead, total [as Pb]	daily maximum	≤ 1.748 kg/d	Sep	002
Nickel, total [as Ni]	monthly average	≤ 1115.4 ug/L	Sep	002
Nickel, total [as Ni]	daily maximum	≤ 2626.8 ug/L	Sep	002
Nickel, total [as Ni]	monthly average	≤ 4.281 kg/d	Sep	002
Nickel, total [as Ni]	daily maximum	≤ 10.082 kg/d	Sep	002
Zinc, total [as Zn]	monthly average	≤ 693 ug/L	Sep	002
Zinc, total [as Zn]	daily maximum	≤ 1722.6 ug/L	Sep	002
Zinc, total [as Zn]	monthly average	≤ 2.66 kg/d	Sep	002
Zinc, total [as Zn]	daily maximum	≤ 6.612 kg/d	Sep	002
Copper, total recoverable	daily maximum	≤ 234 ug/L	Sep	002
Copper, total recoverable	daily maximum	≤ .898 kg/d	Sep	002
Coliform, fecal MF, MFC broth, 44.5 C	monthly geometric mean	≤ 1000 #/100mL	Jan, Feb, Mar, Apr, Nov, Dec	002
Coliform, fecal MF, MFC broth, 44.5 C	weekly geometric mean	≤ 2000 #/100mL	Jan, Feb, Mar, Apr, Nov, Dec	002
E. coli, MTEC-MF	monthly geometric mean	≤ 126 MPN/100mL	May–Oct	002
E. coli, MTEC-MF	weekly geometric mean	≤ 240 MPN/100mL	May–Oct	002
Carbon tetrachloride	monthly average	≤ 11.88 ug/L	Sep	002
Carbon tetrachloride	daily maximum	≤ 25.08 ug/L	Sep	002
Carbon tetrachloride	monthly average	≤ .046 kg/d	Sep	002
Carbon tetrachloride	daily maximum	≤ .096 kg/d	Sep	002
1,2-Dichloroethane	monthly average	≤ 44.88 ug/L	Sep	002
1,2-Dichloroethane	daily maximum	≤ 139.26 ug/L	Sep	002
1,2-Dichloroethane	monthly average	≤ .172 kg/d	Sep	002
1,2-Dichloroethane	daily maximum	≤ .535 kg/d	Sep	002
Chloroform	monthly average	≤ 13.86 ug/L	Sep	002
Chloroform	daily maximum	≤ 30.36 ug/L	Sep	002
Chloroform	monthly average	≤ .053 kg/d	Sep	002
Chloroform	daily maximum	≤ .117 kg/d	Sep	002
Toluene	monthly average	≤ 17.16 ug/L	Sep	002
Toluene	daily maximum	≤ 52.8 ug/L	Sep	002
Toluene	monthly average	≤ .066 kg/d	Sep	002
Toluene	daily maximum	≤ .203 kg/d	Sep	002
Benzene	monthly average	≤ 24.42 ug/L	Sep	002
Benzene	daily maximum	≤ 89.76 ug/L	Sep	002
Benzene	monthly average	≤ .094 kg/d	Sep	002
Benzene	daily maximum	≤ .345 kg/d	Sep	002
Acenaphthylene	monthly average	≤ 14.52 ug/L	Sep	002
Acenaphthylene	daily maximum	≤ 38.94 ug/L	Sep	002
Acenaphthylene	monthly average	≤ .056 kg/d	Sep	002
Acenaphthylene	daily maximum	≤ .149 kg/d	Sep	002
Acenaphthene	monthly average	≤ 14.52 ug/L	Sep	002
Acenaphthene	daily maximum	≤ 38.94 ug/L	Sep	002
Acenaphthene	monthly average	≤ .056 kg/d	Sep	002
Acenaphthene	daily maximum	≤ .149 kg/d	Sep	002
Acrylonitrile	monthly average	≤ 63.36 ug/L	Sep	002
Acrylonitrile	daily maximum	≤ 159.72 ug/L	Sep	002
Acrylonitrile	monthly average	≤ .243 kg/d	Sep	002
Acrylonitrile	daily maximum	≤ .613 kg/d	Sep	002
Anthracene	daily maximum	≤ 2.49 ug/L	Sep	002
Anthracene	daily maximum	≤ .0096 kg/d	Sep	002
Benzo[b]fluoranthene	monthly average	≤ 15.18 ug/L	Sep	002
Benzo[b]fluoranthene	daily maximum	≤ 40.26 ug/L	Sep	002
Benzo[b]fluoranthene	monthly average	≤ .058 kg/d	Sep	002
Benzo[b]fluoranthene	daily maximum	≤ .155 kg/d	Sep	002
Benzo[k]fluoranthene	monthly average	≤ 14.52 ug/L	Sep	002
Benzo[k]fluoranthene	daily maximum	≤ 38.94 ug/L	Sep	002
Benzo[k]fluoranthene	monthly average	≤ .056 kg/d	Sep	002
Benzo[k]fluoranthene	daily maximum	≤ .149 kg/d	Sep	002
Benzo[a]pyrene	monthly average	≤ 2.4 ug/L	Sep	002
Benzo[a]pyrene	daily maximum	≤ 40.26 ug/L	Sep	002
Benzo[a]pyrene	monthly average	≤ .0092 kg/d	Sep	002
Benzo[a]pyrene	daily maximum	≤ .155 kg/d	Sep	002
Chlorobenzene	monthly average	≤ 9.9 ug/L	Sep	002
Chlorobenzene	daily maximum	≤ 18.48 ug/L	Sep	002
Chlorobenzene	monthly average	≤ .038 kg/d	Sep	002
Chlorobenzene	daily maximum	≤ .071 kg/d	Sep	002
Chrysene	monthly average	≤ 14.52 ug/L	Sep	002
Chrysene	daily maximum	≤ 38.94 ug/L	Sep	002
Chrysene	monthly average	≤ .056 kg/d	Sep	002
Chrysene	daily maximum	≤ .149 kg/d	Sep	002
Diethyl phthalate	monthly average	≤ 53.46 ug/L	Sep	002
Diethyl phthalate	daily maximum	≤ 133.98 ug/L	Sep	002
Diethyl phthalate	monthly average	≤ .205 kg/d	Sep	002
Diethyl phthalate	daily maximum	≤ .514 kg/d	Sep	002
Dimethyl phthalate	monthly average	≤ 12.54 ug/L	Sep	002
Dimethyl phthalate	daily maximum	≤ 31.02 ug/L	Sep	002
Dimethyl phthalate	monthly average	≤ .048 kg/d	Sep	002
Dimethyl phthalate	daily maximum	≤ .119 kg/d	Sep	002
Ethylbenzene	monthly average	≤ 21.12 ug/L	Sep	002
Ethylbenzene	daily maximum	≤ 71.28 ug/L	Sep	002
Ethylbenzene	monthly average	≤ .081 kg/d	Sep	002
Ethylbenzene	daily maximum	≤ .274 kg/d	Sep	002
Fluoranthene	monthly average	≤ 16.5 ug/L	Sep	002
Fluoranthene	daily maximum	≤ 44.88 ug/L	Sep	002
Fluoranthene	monthly average	≤ .063 kg/d	Sep	002
Fluoranthene	daily maximum	≤ .172 kg/d	Sep	002
Fluorene	monthly average	≤ 14.52 ug/L	Sep	002
Fluorene	daily maximum	≤ 38.94 ug/L	Sep	002
Fluorene	monthly average	≤ .056 kg/d	Sep	002
Fluorene	daily maximum	≤ .149 kg/d	Sep	002
Hexachloroethane	monthly average	≤ 13.86 ug/L	Sep	002
Hexachloroethane	daily maximum	≤ 35.64 ug/L	Sep	002
Hexachloroethane	monthly average	≤ .053 kg/d	Sep	002
Hexachloroethane	daily maximum	≤ .137 kg/d	Sep	002
Methyl chloride [Chloromethane]	monthly average	≤ 56.76 ug/L	Sep	002
Methyl chloride [Chloromethane]	daily maximum	≤ 125.4 ug/L	Sep	002
Methyl chloride [Chloromethane]	monthly average	≤ .218 kg/d	Sep	002
Methyl chloride [Chloromethane]	daily maximum	≤ .481 kg/d	Sep	002
Methylene chloride	monthly average	≤ 26.4 ug/L	Sep	002
Methylene chloride	daily maximum	≤ 58.74 ug/L	Sep	002
Methylene chloride	monthly average	≤ .101 kg/d	Sep	002
Methylene chloride	daily maximum	≤ .225 kg/d	Sep	002
Nitrobenzene	monthly average	≤ 17.82 ug/L	Sep	002
Nitrobenzene	daily maximum	≤ 44.88 ug/L	Sep	002
Nitrobenzene	monthly average	≤ .068 kg/d	Sep	002
Nitrobenzene	daily maximum	≤ .172 kg/d	Sep	002
Phenanthrene	monthly average	≤ 14.52 ug/L	Sep	002
Phenanthrene	daily maximum	≤ 38.94 ug/L	Sep	002
Phenanthrene	monthly average	≤ .056 kg/d	Sep	002
Phenanthrene	daily maximum	≤ .149 kg/d	Sep	002
Pyrene	monthly average	≤ 16.5 ug/L	Sep	002
Pyrene	daily maximum	≤ 44.22 ug/L	Sep	002
Pyrene	monthly average	≤ .063 kg/d	Sep	002
Pyrene	daily maximum	≤ .17 kg/d	Sep	002
Tetrachloroethylene	monthly average	≤ 14.52 ug/L	Sep	002
Tetrachloroethylene	daily maximum	≤ 36.96 ug/L	Sep	002
Tetrachloroethylene	monthly average	≤ .056 kg/d	Sep	002
Tetrachloroethylene	daily maximum	≤ .142 kg/d	Sep	002
1,1-Dichloroethane	monthly average	≤ 14.52 ug/L	Sep	002
1,1-Dichloroethane	daily maximum	≤ 38.94 ug/L	Sep	002
1,1-Dichloroethane	monthly average	≤ .056 kg/d	Sep	002
1,1-Dichloroethane	daily maximum	≤ .149 kg/d	Sep	002
1,1-Dichloroethylene	monthly average	≤ 10.56 ug/L	Sep	002
1,1-Dichloroethylene	daily maximum	≤ 16.5 ug/L	Sep	002
1,1-Dichloroethylene	monthly average	≤ .041 kg/d	Sep	002
1,1-Dichloroethylene	daily maximum	≤ .063 kg/d	Sep	002
1,1,1-Trichloroethane	monthly average	≤ 13.86 ug/L	Sep	002
1,1,1-Trichloroethane	daily maximum	≤ 35.64 ug/L	Sep	002
1,1,1-Trichloroethane	monthly average	≤ .053 kg/d	Sep	002
1,1,1-Trichloroethane	daily maximum	≤ .137 kg/d	Sep	002
1,1,2-Trichloroethane	monthly average	≤ 13.86 ug/L	Sep	002
1,1,2-Trichloroethane	daily maximum	≤ 35.64 ug/L	Sep	002
1,1,2-Trichloroethane	monthly average	≤ .053 kg/d	Sep	002
1,1,2-Trichloroethane	daily maximum	≤ .137 kg/d	Sep	002
Benzo[a]anthracene	monthly average	≤ 14.52 ug/L	Sep	002
Benzo[a]anthracene	daily maximum	≤ 38.94 ug/L	Sep	002
Benzo[a]anthracene	monthly average	≤ .056 kg/d	Sep	002
Benzo[a]anthracene	daily maximum	≤ .149 kg/d	Sep	002
1,2-Dichlorobenzene	monthly average	≤ 50.82 ug/L	Sep	002
1,2-Dichlorobenzene	daily maximum	≤ 107.58 ug/L	Sep	002
1,2-Dichlorobenzene	monthly average	≤ .195 kg/d	Sep	002
1,2-Dichlorobenzene	daily maximum	≤ .413 kg/d	Sep	002
1,2-Dichloropropane	monthly average	≤ 100.98 ug/L	Sep	002
1,2-Dichloropropane	daily maximum	≤ 151.8 ug/L	Sep	002
1,2-Dichloropropane	monthly average	≤ .388 kg/d	Sep	002
1,2-Dichloropropane	daily maximum	≤ .583 kg/d	Sep	002
trans-1,2-Dichloroethylene	monthly average	≤ 13.86 ug/L	Sep	002
trans-1,2-Dichloroethylene	daily maximum	≤ 35.64 ug/L	Sep	002
trans-1,2-Dichloroethylene	monthly average	≤ .053 kg/d	Sep	002
trans-1,2-Dichloroethylene	daily maximum	≤ .137 kg/d	Sep	002
1,2,4-Trichlorobenzene	monthly average	≤ 44.88 ug/L	Sep	002
1,2,4-Trichlorobenzene	daily maximum	≤ 92.4 ug/L	Sep	002
1,2,4-Trichlorobenzene	monthly average	≤ .172 kg/d	Sep	002
1,2,4-Trichlorobenzene	daily maximum	≤ .355 kg/d	Sep	002
1,3-Dichlorobenzene	monthly average	≤ 20.46 ug/L	Sep	002
1,3-Dichlorobenzene	daily maximum	≤ 29.04 ug/L	Sep	002
1,3-Dichlorobenzene	monthly average	≤ .079 kg/d	Sep	002
1,3-Dichlorobenzene	daily maximum	≤ .111 kg/d	Sep	002
1,4-Dichlorobenzene	monthly average	≤ 9.9 ug/L	Sep	002
1,4-Dichlorobenzene	daily maximum	≤ 18.48 ug/L	Sep	002
1,4-Dichlorobenzene	monthly average	≤ .038 kg/d	Sep	002
1,4-Dichlorobenzene	daily maximum	≤ .071 kg/d	Sep	002
2-Chlorophenol	monthly average	≤ 20.46 ug/L	Sep	002
2-Chlorophenol	daily maximum	≤ 64.68 ug/L	Sep	002
2-Chlorophenol	monthly average	≤ .079 kg/d	Sep	002
2-Chlorophenol	daily maximum	≤ .248 kg/d	Sep	002
2-Nitrophenol	monthly average	≤ 27.06 ug/L	Sep	002
2-Nitrophenol	daily maximum	≤ 45.54 ug/L	Sep	002
2-Nitrophenol	monthly average	≤ .104 kg/d	Sep	002
2-Nitrophenol	daily maximum	≤ .175 kg/d	Sep	002
2,4-Dichlorophenol	monthly average	≤ 25.74 ug/L	Sep	002
2,4-Dichlorophenol	daily maximum	≤ 73.92 ug/L	Sep	002
2,4-Dichlorophenol	monthly average	≤ .099 kg/d	Sep	002
2,4-Dichlorophenol	daily maximum	≤ .284 kg/d	Sep	002
2,4-Dimethylphenol	monthly average	≤ 11.88 ug/L	Sep	002
2,4-Dimethylphenol	daily maximum	≤ 23.76 ug/L	Sep	002
2,4-Dimethylphenol	monthly average	≤ .046 kg/d	Sep	002
2,4-Dimethylphenol	daily maximum	≤ .091 kg/d	Sep	002
2,4-Dinitrotoluene	monthly average	≤ 74.58 ug/L	Sep	002
2,4-Dinitrotoluene	daily maximum	≤ 188.1 ug/L	Sep	002
2,4-Dinitrotoluene	monthly average	≤ .285 kg/d	Sep	002
2,4-Dinitrotoluene	daily maximum	≤ .722 kg/d	Sep	002
2,4-Dinitrophenol	monthly average	≤ 46.86 ug/L	Sep	002
2,4-Dinitrophenol	daily maximum	≤ 81.18 ug/L	Sep	002
2,4-Dinitrophenol	monthly average	≤ .18 kg/d	Sep	002
2,4-Dinitrophenol	daily maximum	≤ .312 kg/d	Sep	002
2,6-Dinitrotoluene	monthly average	≤ 168.3 ug/L	Sep	002
2,6-Dinitrotoluene	daily maximum	≤ 423.06 ug/L	Sep	002
2,6-Dinitrotoluene	monthly average	≤ .646 kg/d	Sep	002
2,6-Dinitrotoluene	daily maximum	≤ 1.624 kg/d	Sep	002
4-Nitrophenol	monthly average	≤ 47.52 ug/L	Sep	002
4-Nitrophenol	daily maximum	≤ 81.84 ug/L	Sep	002
4-Nitrophenol	monthly average	≤ .182 kg/d	Sep	002
4-Nitrophenol	daily maximum	≤ .314 kg/d	Sep	002
4,6-Dinitro-o-cresol	monthly average	≤ 51.48 ug/L	Sep	002
4,6-Dinitro-o-cresol	daily maximum	≤ 182.82 ug/L	Sep	002
4,6-Dinitro-o-cresol	monthly average	≤ .198 kg/d	Sep	002
4,6-Dinitro-o-cresol	daily maximum	≤ .702 kg/d	Sep	002
Phenol	monthly average	≤ 9.9 ug/L	Sep	002
Phenol	daily maximum	≤ 17.16 ug/L	Sep	002
Phenol	monthly average	≤ .038 kg/d	Sep	002
Phenol	daily maximum	≤ .066 kg/d	Sep	002
Naphthalene	monthly average	≤ 14.52 ug/L	Sep	002
Naphthalene	daily maximum	≤ 38.94 ug/L	Sep	002
Naphthalene	monthly average	≤ .056 kg/d	Sep	002
Naphthalene	daily maximum	≤ .149 kg/d	Sep	002
Di[2-ethylhexyl] phthalate [DEHP]	monthly average	≤ 67.98 ug/L	Sep	002
Di[2-ethylhexyl] phthalate [DEHP]	daily maximum	≤ 184.14 ug/L	Sep	002
Di[2-ethylhexyl] phthalate [DEHP]	monthly average	≤ .261 kg/d	Sep	002
Di[2-ethylhexyl] phthalate [DEHP]	daily maximum	≤ .707 kg/d	Sep	002
Di-n-butyl phthalate	monthly average	≤ 17.82 ug/L	Sep	002
Di-n-butyl phthalate	daily maximum	≤ 37.62 ug/L	Sep	002
Di-n-butyl phthalate	monthly average	≤ .068 kg/d	Sep	002
Di-n-butyl phthalate	daily maximum	≤ .144 kg/d	Sep	002
Vinyl chloride	monthly average	≤ 68.64 ug/L	Sep	002
Vinyl chloride	daily maximum	≤ 176.88 ug/L	Sep	002
Vinyl chloride	monthly average	≤ .263 kg/d	Sep	002
Vinyl chloride	daily maximum	≤ .679 kg/d	Sep	002
Trichloroethylene	monthly average	≤ 13.86 ug/L	Sep	002
Trichloroethylene	daily maximum	≤ 35.64 ug/L	Sep	002
Trichloroethylene	monthly average	≤ .053 kg/d	Sep	002
Trichloroethylene	daily maximum	≤ .137 kg/d	Sep	002
Hexachlorobenzene	monthly average	≤ .00079 ug/L	Sep	002
Hexachlorobenzene	daily maximum	≤ 18.48 ug/L	Sep	002
Hexachlorobenzene	monthly average	≤ .000003 kg/d	Sep	002
Hexachlorobenzene	daily maximum	≤ .071 kg/d	Sep	002
Hexachlorobutadiene	monthly average	≤ .1 ug/L	Sep	002
Hexachlorobutadiene	daily maximum	≤ 32.34 ug/L	Sep	002
Hexachlorobutadiene	monthly average	≤ .00038 kg/d	Sep	002
Hexachlorobutadiene	daily maximum	≤ .125 kg/d	Sep	002
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	002
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	002
Toxicity [acute], Ceriodaphnia dubia	monthly average	report only (tox acute)	Mar, Sep	002
Toxicity [acute], Ceriodaphnia dubia	daily maximum	report only (tox acute)	Mar, Sep	002
Toxicity [acute], Pimephales promelas [Fathead Minnow]	monthly average	report only (tox acute)	Sep	002
Toxicity [acute], Pimephales promelas [Fathead Minnow]	daily maximum	report only (tox acute)	Sep	002
pH, maximum	daily maximum	report only (SU)	all year	002
pH, minimum	daily minimum	report only (SU)	all year	002
Solids, total dissolved- 180 deg. C	monthly average	report only (mg/L)	all year	002
Solids, total dissolved- 180 deg. C	daily maximum	report only (mg/L)	all year	002
1,3-Dichloropropene	monthly average	≤ 19.14 ug/L	Sep	002
1,3-Dichloropropene	daily maximum	≤ 29.04 ug/L	Sep	002
1,3-Dichloropropene	monthly average	≤ .073 kg/d	Sep	002
1,3-Dichloropropene	daily maximum	≤ .111 kg/d	Sep	002
pH range excursions, > 60 minutes	daily maximum	≤ 0 occur/d	all year	002
pH range excursions, monthly total accum	daily maximum	≤ 446 min	all year	002
Chloroethane	monthly average	≤ 68.64 ug/L	Sep	002
Chloroethane	daily maximum	≤ 176.88 ug/L	Sep	002
Chloroethane	monthly average	≤ .263 kg/d	Sep	002
Chloroethane	daily maximum	≤ .679 kg/d	Sep	002
%Effect Static Renewal 48Hr Acute Ceriodaphnia dubia	monthly average	report only (%)	Mar, Sep	801
%Effect Static Renewal 48Hr Acute Ceriodaphnia dubia	daily maximum	report only (%)	Mar, Sep	801
%Effect Static Renewal 96Hr Acute Pimephales promelas	monthly average	report only (%)	Sep	801
%Effect Static Renewal 96Hr Acute Pimephales promelas	daily maximum	report only (%)	Sep	801

How strict are these limits?

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