Westlake Vinyls Inc — NPDES permit KY0003484: limits, due date and EPA's record

Alkalies And Chlorine, major discharger, Calvert City, Kentucky. NPDES permit KY0003484, in force until Mar 31, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Limits in force (276)

Parameter	Statistic	Limit	Months	Outfall
Temperature, water deg. fahrenheit	monthly average	report only (deg F)	all year	001
Temperature, water deg. fahrenheit	daily maximum	≤ 110 deg F	all year	001
pH	minimum	≥ 6 SU	all year	001
pH	maximum	≤ 9 SU	all year	001
Oil & Grease	monthly average	≤ 10 mg/L	all year	001
Oil & Grease	daily maximum	≤ 15 mg/L	all year	001
Hardness, total [as CaCO3]	monthly average	report only (mg/L)	all year	001
Hardness, total [as CaCO3]	daily maximum	report only (mg/L)	all year	001
Chloride [as Cl]	monthly average	≤ 16320 mg/L	all year	001
Chloride [as Cl]	daily maximum	≤ 16320 mg/L	all year	001
Iron, total recoverable	monthly average	≤ 54.4 mg/L	all year	001
Iron, total recoverable	daily maximum	≤ 54.4 mg/L	all year	001
Copper, total recoverable	monthly average	≤ .194 mg/L	all year	001
Copper, total recoverable	daily maximum	≤ .194 mg/L	all year	001
1,2-Dichloroethane	monthly average	report only (mg/L)	all year	001
1,2-Dichloroethane	daily maximum	report only (mg/L)	all year	001
Hexachlorobenzene	monthly average	≤ .115 ug/L	all year	001
Hexachlorobenzene	daily maximum	report only (ug/L)	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	monthly average	≤ .258 mg/L	all year	001
Chlorine, total residual	daily maximum	≤ .258 mg/L	all year	001
Toxicity, final conc toxicity units	daily maximum	≤ 3.78 tox acute	all year	001
BOD, 5-day, 20 deg. C	monthly average	≤ 183 lb/d	all year	002
BOD, 5-day, 20 deg. C	daily maximum	≤ 448 lb/d	all year	002
Solids, total suspended	monthly average	≤ 244 lb/d	all year	002
Solids, total suspended	daily maximum	≤ 729 lb/d	all year	002
Cyanide, total [as CN]	monthly average	≤ 1.763 lb/d	all year	002
Cyanide, total [as CN]	daily maximum	≤ 5.038 lb/d	all year	002
Chromium, total [as Cr]	monthly average	≤ 4.66 lb/d	all year	002
Chromium, total [as Cr]	daily maximum	≤ 11.629 lb/d	all year	002
Copper, total [as Cu]	monthly average	≤ 6.088 lb/d	all year	002
Copper, total [as Cu]	daily maximum	≤ 14.19 lb/d	all year	002
Lead, total [as Pb]	monthly average	≤ 1.343 lb/d	all year	002
Lead, total [as Pb]	daily maximum	≤ 2.897 lb/d	all year	002
Nickel, total [as Ni]	monthly average	≤ 7.095 lb/d	all year	002
Nickel, total [as Ni]	daily maximum	≤ 16.71 lb/d	all year	002
Zinc, total [as Zn]	monthly average	≤ 4.408 lb/d	all year	002
Zinc, total [as Zn]	daily maximum	≤ 10.958 lb/d	all year	002
Carbon tetrachloride	monthly average	≤ .076 lb/d	all year	002
Carbon tetrachloride	daily maximum	≤ .16 lb/d	all year	002
1,2-Dichloroethane	monthly average	≤ .285 lb/d	all year	002
1,2-Dichloroethane	daily maximum	≤ .886 lb/d	all year	002
Chloroform	monthly average	≤ .088 lb/d	all year	002
Chloroform	daily maximum	≤ .193 lb/d	all year	002
Toluene	monthly average	≤ .109 lb/d	all year	002
Toluene	daily maximum	≤ .336 lb/d	all year	002
Benzene	monthly average	≤ .155 lb/d	all year	002
Benzene	daily maximum	≤ .571 lb/d	all year	002
Acenaphthylene	monthly average	≤ .092 lb/d	all year	002
Acenaphthylene	daily maximum	≤ .248 lb/d	all year	002
Acenaphthene	monthly average	≤ .092 lb/d	all year	002
Acenaphthene	daily maximum	≤ .248 lb/d	all year	002
Acrylonitrile	monthly average	≤ .403 lb/d	all year	002
Acrylonitrile	daily maximum	≤ 1.016 lb/d	all year	002
Anthracene	monthly average	≤ .092 lb/d	all year	002
Anthracene	daily maximum	≤ .248 lb/d	all year	002
Benzo[k]fluoranthene	monthly average	≤ .092 lb/d	all year	002
Benzo[k]fluoranthene	daily maximum	≤ .248 lb/d	all year	002
Benzo[a]pyrene	monthly average	≤ .097 lb/d	all year	002
Benzo[a]pyrene	daily maximum	≤ .256 lb/d	all year	002
Chlorobenzene	monthly average	≤ .063 lb/d	all year	002
Chlorobenzene	daily maximum	≤ .118 lb/d	all year	002
Chrysene	monthly average	≤ .092 lb/d	all year	002
Chrysene	daily maximum	≤ .248 lb/d	all year	002
Diethyl phthalate	monthly average	≤ .34 lb/d	all year	002
Diethyl phthalate	daily maximum	≤ .852 lb/d	all year	002
Dimethyl phthalate	monthly average	≤ .08 lb/d	all year	002
Dimethyl phthalate	daily maximum	≤ .197 lb/d	all year	002
Ethylbenzene	monthly average	≤ .134 lb/d	all year	002
Ethylbenzene	daily maximum	≤ .453 lb/d	all year	002
Fluoranthene	monthly average	≤ .105 lb/d	all year	002
Fluoranthene	daily maximum	≤ .285 lb/d	all year	002
Fluorene	monthly average	≤ .092 lb/d	all year	002
Fluorene	daily maximum	≤ .248 lb/d	all year	002
Hexachloroethane	monthly average	≤ .088 lb/d	all year	002
Hexachloroethane	daily maximum	≤ .227 lb/d	all year	002
Methyl chloride [Chloromethane]	monthly average	≤ .361 lb/d	all year	002
Methyl chloride [Chloromethane]	daily maximum	≤ .798 lb/d	all year	002
Methylene chloride	monthly average	≤ .168 lb/d	all year	002
Methylene chloride	daily maximum	≤ .374 lb/d	all year	002
Nitrobenzene	monthly average	≤ .113 lb/d	all year	002
Nitrobenzene	daily maximum	≤ .285 lb/d	all year	002
Phenanthrene	monthly average	≤ .092 lb/d	all year	002
Phenanthrene	daily maximum	≤ .248 lb/d	all year	002
Pyrene	monthly average	≤ .105 lb/d	all year	002
Pyrene	daily maximum	≤ .281 lb/d	all year	002
Tetrachloroethylene	monthly average	≤ .092 lb/d	all year	002
Tetrachloroethylene	daily maximum	≤ .235 lb/d	all year	002
1,1-Dichloroethane	monthly average	≤ .092 lb/d	all year	002
1,1-Dichloroethane	daily maximum	≤ .248 lb/d	all year	002
1,1-Dichloroethylene	monthly average	≤ .067 lb/d	all year	002
1,1-Dichloroethylene	daily maximum	≤ .105 lb/d	all year	002
1,1,1-Trichloroethane	monthly average	≤ .088 lb/d	all year	002
1,1,1-Trichloroethane	daily maximum	≤ .227 lb/d	all year	002
1,1,2-Trichloroethane	monthly average	≤ .088 lb/d	all year	002
1,1,2-Trichloroethane	daily maximum	≤ .227 lb/d	all year	002
Benzo[a]anthracene	monthly average	≤ .092 lb/d	all year	002
Benzo[a]anthracene	daily maximum	≤ .248 lb/d	all year	002
1,2-Dichlorobenzene	monthly average	≤ .323 lb/d	all year	002
1,2-Dichlorobenzene	daily maximum	≤ .684 lb/d	all year	002
1,2-Dichloropropane	monthly average	≤ .642 lb/d	all year	002
1,2-Dichloropropane	daily maximum	≤ .966 lb/d	all year	002
trans-1,2-Dichloroethylene	monthly average	≤ .088 lb/d	all year	002
trans-1,2-Dichloroethylene	daily maximum	≤ .227 lb/d	all year	002
1,2,4-Trichlorobenzene	monthly average	≤ .285 lb/d	all year	002
1,2,4-Trichlorobenzene	daily maximum	≤ .588 lb/d	all year	002
1,3-Dichlorobenzene	monthly average	≤ .13 lb/d	all year	002
1,3-Dichlorobenzene	daily maximum	≤ .185 lb/d	all year	002
1,4-Dichlorobenzene	monthly average	≤ .063 lb/d	all year	002
1,4-Dichlorobenzene	daily maximum	≤ .118 lb/d	all year	002
2-Chlorophenol	monthly average	≤ .13 lb/d	all year	002
2-Chlorophenol	daily maximum	≤ .411 lb/d	all year	002
2-Nitrophenol	monthly average	≤ .172 lb/d	all year	002
2-Nitrophenol	daily maximum	≤ .29 lb/d	all year	002
2,4-Dichlorophenol	monthly average	≤ .164 lb/d	all year	002
2,4-Dichlorophenol	daily maximum	≤ .47 lb/d	all year	002
2,4-Dimethylphenol	monthly average	≤ .076 lb/d	all year	002
2,4-Dimethylphenol	daily maximum	≤ .151 lb/d	all year	002
2,4-Dinitrotoluene	monthly average	≤ .474 lb/d	all year	002
2,4-Dinitrotoluene	daily maximum	≤ 1.197 lb/d	all year	002
2,4-Dinitrophenol	monthly average	≤ .298 lb/d	all year	002
2,4-Dinitrophenol	daily maximum	≤ .516 lb/d	all year	002
2,6-Dinitrotoluene	monthly average	≤ 1.071 lb/d	all year	002
2,6-Dinitrotoluene	daily maximum	≤ 2.691 lb/d	all year	002
4-Nitrophenol	monthly average	≤ .302 lb/d	all year	002
4-Nitrophenol	daily maximum	≤ .521 lb/d	all year	002
4,6-Dinitro-o-cresol	monthly average	≤ .327 lb/d	all year	002
4,6-Dinitro-o-cresol	daily maximum	≤ 1.163 lb/d	all year	002
Phenol	monthly average	≤ .063 lb/d	all year	002
Phenol	daily maximum	≤ .109 lb/d	all year	002
Naphthalene	monthly average	≤ .092 lb/d	all year	002
Naphthalene	daily maximum	≤ .248 lb/d	all year	002
Di-n-butyl phthalate	monthly average	≤ .113 lb/d	all year	002
Di-n-butyl phthalate	daily maximum	≤ .239 lb/d	all year	002
Vinyl chloride	monthly average	≤ .437 lb/d	all year	002
Vinyl chloride	daily maximum	≤ 1.125 lb/d	all year	002
Trichloroethylene	monthly average	≤ .088 lb/d	all year	002
Trichloroethylene	daily maximum	≤ .227 lb/d	all year	002
Hexachlorobenzene	monthly average	≤ .063 lb/d	all year	002
Hexachlorobenzene	daily maximum	≤ .118 lb/d	all year	002
Hexachlorobutadiene	monthly average	≤ .084 lb/d	all year	002
Hexachlorobutadiene	daily maximum	≤ .206 lb/d	all year	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
1,3-Dichloropropylene	monthly average	≤ .122 lb/d	all year	002
1,3-Dichloropropylene	daily maximum	≤ .185 lb/d	all year	002
3,4-Benzofluoranthene	monthly average	≤ .097 lb/d	all year	002
3,4-Benzofluoranthene	daily maximum	≤ .256 lb/d	all year	002
Chloroethane	monthly average	≤ .437 lb/d	all year	002
Chloroethane	daily maximum	≤ 1.125 lb/d	all year	002
BOD, 5-day, 20 deg. C	monthly average	≤ 379 lb/d	all year	009
BOD, 5-day, 20 deg. C	daily maximum	≤ 1009 lb/d	all year	009
Solids, total suspended	monthly average	≤ 580 lb/d	all year	009
Solids, total suspended	daily maximum	≤ 1880 lb/d	all year	009
Cyanide, total [as CN]	monthly average	≤ 5.299 lb/d	all year	009
Cyanide, total [as CN]	daily maximum	≤ 15.141 lb/d	all year	009
Chromium, total [as Cr]	monthly average	≤ 14.006 lb/d	all year	009
Chromium, total [as Cr]	daily maximum	≤ 34.951 lb/d	all year	009
Copper, total [as Cu]	monthly average	≤ 18.296 lb/d	all year	009
Copper, total [as Cu]	daily maximum	≤ 42.648 lb/d	all year	009
Lead, total [as Pb]	monthly average	≤ 4.038 lb/d	all year	009
Lead, total [as Pb]	daily maximum	≤ 8.706 lb/d	all year	009
Nickel, total [as Ni]	monthly average	≤ 21.324 lb/d	all year	009
Nickel, total [as Ni]	daily maximum	≤ 50.218 lb/d	all year	009
Zinc, total [as Zn]	monthly average	≤ 13.249 lb/d	all year	009
Zinc, total [as Zn]	daily maximum	≤ 32.932 lb/d	all year	009
Carbon tetrachloride	monthly average	≤ 1.792 lb/d	all year	009
Carbon tetrachloride	daily maximum	≤ 4.795 lb/d	all year	009
1,2-Dichloroethane	monthly average	≤ 2.271 lb/d	all year	009
1,2-Dichloroethane	daily maximum	≤ 7.243 lb/d	all year	009
Chloroform	monthly average	≤ 1.401 lb/d	all year	009
Chloroform	daily maximum	≤ 4.101 lb/d	all year	009
Toluene	monthly average	≤ .353 lb/d	all year	009
Toluene	daily maximum	≤ .934 lb/d	all year	009
Benzene	monthly average	≤ .719 lb/d	all year	009
Benzene	daily maximum	≤ 1.691 lb/d	all year	009
Acenaphthylene	monthly average	≤ .24 lb/d	all year	009
Acenaphthylene	daily maximum	≤ .593 lb/d	all year	009
Acenaphthene	monthly average	≤ .24 lb/d	all year	009
Acenaphthene	daily maximum	≤ .593 lb/d	all year	009
Acrylonitrile	monthly average	≤ 1.186 lb/d	all year	009
Acrylonitrile	daily maximum	≤ 2.927 lb/d	all year	009
Anthracene	monthly average	≤ .24 lb/d	all year	009
Anthracene	daily maximum	≤ .593 lb/d	all year	009
Benzo[k]fluoranthene	monthly average	≤ .24 lb/d	all year	009
Benzo[k]fluoranthene	daily maximum	≤ .593 lb/d	all year	009
Benzo[a]pyrene	monthly average	≤ .252 lb/d	all year	009
Benzo[a]pyrene	daily maximum	≤ .606 lb/d	all year	009
Chlorobenzene	monthly average	≤ 1.792 lb/d	all year	009
Chlorobenzene	daily maximum	≤ 4.795 lb/d	all year	009
Chrysene	monthly average	≤ .24 lb/d	all year	009
Chrysene	daily maximum	≤ .593 lb/d	all year	009
Diethyl phthalate	monthly average	≤ .58 lb/d	all year	009
Diethyl phthalate	daily maximum	≤ 1.426 lb/d	all year	009
Dimethyl phthalate	monthly average	≤ .24 lb/d	all year	009
Dimethyl phthalate	daily maximum	≤ .593 lb/d	all year	009
Ethylbenzene	monthly average	≤ 1.792 lb/d	all year	009
Ethylbenzene	daily maximum	≤ 4.795 lb/d	all year	009
Fluoranthene	monthly average	≤ .278 lb/d	all year	009
Fluoranthene	daily maximum	≤ .681 lb/d	all year	009
Fluorene	monthly average	≤ .24 lb/d	all year	009
Fluorene	daily maximum	≤ .593 lb/d	all year	009
Hexachloroethane	monthly average	≤ 2.473 lb/d	all year	009
Hexachloroethane	daily maximum	≤ 10.018 lb/d	all year	009
Methyl chloride [Chloromethane]	monthly average	≤ 1.388 lb/d	all year	009
Methyl chloride [Chloromethane]	daily maximum	≤ 3.722 lb/d	all year	009
Methylene chloride	monthly average	≤ .454 lb/d	all year	009
Methylene chloride	daily maximum	≤ 2.145 lb/d	all year	009
Nitrobenzene	monthly average	≤ 28.226 lb/d	all year	009
Nitrobenzene	daily maximum	≤ 80.778 lb/d	all year	009
Phenanthrene	monthly average	≤ .24 lb/d	all year	009
Phenanthrene	daily maximum	≤ .593 lb/d	all year	009
Pyrene	monthly average	≤ .252 lb/d	all year	009
Pyrene	daily maximum	≤ .606 lb/d	all year	009
Tetrachloroethylene	monthly average	≤ .656 lb/d	all year	009
Tetrachloroethylene	daily maximum	≤ 2.069 lb/d	all year	009
1,1-Dichloroethane	monthly average	≤ .278 lb/d	all year	009
1,1-Dichloroethane	daily maximum	≤ .744 lb/d	all year	009
1,1-Dichloroethylene	monthly average	≤ .278 lb/d	all year	009
1,1-Dichloroethylene	daily maximum	≤ .757 lb/d	all year	009
1,1,1-Trichloroethane	monthly average	≤ .278 lb/d	all year	009
1,1,1-Trichloroethane	daily maximum	≤ .744 lb/d	all year	009
1,1,2-Trichloroethane	monthly average	≤ .404 lb/d	all year	009
1,1,2-Trichloroethane	daily maximum	≤ 1.602 lb/d	all year	009
Benzo[a]anthracene	monthly average	≤ .24 lb/d	all year	009
Benzo[a]anthracene	daily maximum	≤ .593 lb/d	all year	009
1,2-Dichlorobenzene	monthly average	≤ 2.473 lb/d	all year	009
1,2-Dichlorobenzene	daily maximum	≤ 10.018 lb/d	all year	009
1,2-Dichloropropane	monthly average	≤ 2.473 lb/d	all year	009
1,2-Dichloropropane	daily maximum	≤ 10.018 lb/d	all year	009
trans-1,2-Dichloroethylene	monthly average	≤ .315 lb/d	all year	009
trans-1,2-Dichloroethylene	daily maximum	≤ .833 lb/d	all year	009
1,2,4-Trichlorobenzene	monthly average	≤ 2.473 lb/d	all year	009
1,2,4-Trichlorobenzene	daily maximum	≤ 10.018 lb/d	all year	009
1,3-Dichlorobenzene	monthly average	≤ 1.792 lb/d	all year	009
1,3-Dichlorobenzene	daily maximum	≤ 4.795 lb/d	all year	009
1,4-Dichlorobenzene	monthly average	≤ 1.792 lb/d	all year	009
1,4-Dichlorobenzene	daily maximum	≤ 4.795 lb/d	all year	009
2-Nitrophenol	monthly average	≤ .82 lb/d	all year	009
2-Nitrophenol	daily maximum	≤ 2.915 lb/d	all year	009
2,4-Dimethylphenol	monthly average	≤ .24 lb/d	all year	009
2,4-Dimethylphenol	daily maximum	≤ .593 lb/d	all year	009
2,4-Dinitrophenol	monthly average	≤ 15.229 lb/d	all year	009
2,4-Dinitrophenol	daily maximum	≤ 54.142 lb/d	all year	009
4-Nitrophenol	monthly average	≤ 2.044 lb/d	all year	009
4-Nitrophenol	daily maximum	≤ 7.268 lb/d	all year	009
4,6-Dinitro-o-cresol	monthly average	≤ .984 lb/d	all year	009
4,6-Dinitro-o-cresol	daily maximum	≤ 3.495 lb/d	all year	009
Phenol	monthly average	≤ .24 lb/d	all year	009
Phenol	daily maximum	≤ .593 lb/d	all year	009
Naphthalene	monthly average	≤ .24 lb/d	all year	009
Naphthalene	daily maximum	≤ .593 lb/d	all year	009
Di[2-ethylhexyl] phthalate [DEHP]	monthly average	≤ 1.199 lb/d	all year	009
Di[2-ethylhexyl] phthalate [DEHP]	daily maximum	≤ 3.255 lb/d	all year	009
Di-n-butyl phthalate	monthly average	≤ .252 lb/d	all year	009
Di-n-butyl phthalate	daily maximum	≤ .543 lb/d	all year	009
Vinyl chloride	monthly average	≤ 1.224 lb/d	all year	009
Vinyl chloride	daily maximum	≤ 2.17 lb/d	all year	009
Trichloroethylene	monthly average	≤ .328 lb/d	all year	009
Trichloroethylene	daily maximum	≤ .871 lb/d	all year	009
Hexachlorobenzene	monthly average	≤ 2.473 lb/d	all year	009
Hexachlorobenzene	daily maximum	≤ 10.018 lb/d	all year	009
Hexachlorobutadiene	monthly average	≤ 1.792 lb/d	all year	009
Hexachlorobutadiene	daily maximum	≤ 4.795 lb/d	all year	009
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	009
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	009
1,3-Dichloropropylene	monthly average	≤ 2.473 lb/d	all year	009
1,3-Dichloropropylene	daily maximum	≤ 10.018 lb/d	all year	009
3,4-Benzofluoranthene	monthly average	≤ .252 lb/d	all year	009
3,4-Benzofluoranthene	daily maximum	≤ .606 lb/d	all year	009
Chloroethane	monthly average	≤ 1.388 lb/d	all year	009
Chloroethane	daily maximum	≤ 3.722 lb/d	all year	009
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	010
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	010
Cooling Water Intake Inspection	maximum	report only (pass=0;fail=1)	all year	010

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/KY0003484 · MCP: https://passage-data.com/mcp