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Clean Water Act discharge permit · NPDES LA0000281

WESTLAKE VINYLS COMPANY, LP, Geismar, LA: NPDES LA0000281 discharge permit, effluent exceedances, inspections, penalties

WESTLAKE VINYLS COMPANY, LP, held by Westlake Vinyls Company, LP, holds NPDES permit LA0000281, which discharges to Mississippi River. EPA’s file records it issued October 1, 2018 and expiring September 30, 2023. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedWESTLAKE VINYLS COMPANY, LP
Permittee as filedWestlake Vinyls Company, LP
NPDES IDLA0000281
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMajor discharger
Facility typeNot a publicly owned treatment works
IssuedOctober 1, 2018
Expiration dateSeptember 30, 2023
AddressGeismar, LA 70734
Receiving waterMISSISSIPPI RIVER
Receiving water impaired303(D) Listed
SubwatershedGrand Goudine Bayou-New River (HUC 080702040103)
SIC2869 – Industrial Organic Chemicals
Other EPA IDs (FRS)RCRA handler LAD003913449; ICIS-AIR source LA0000002200500008

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant; the 60 with the most exceedances of 80 are shown.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
BOD, 5-day, 20 deg. C4128January 31, 202599,999% over the limit
Chloroform495December 31, 2018184% over the limit
pH range excursions, > 60 minutes163December 31, 20162,147,483,650% over the limit
Solids, total suspended451February 28, 202513% over the limit
Carbon, tot organic [TOC]121June 30, 201671% over the limit
Flow, in conduit or thru treatment plant4150
pH4100
Copper, total [as Cu]640
Carbon tetrachloride440
Toluene440
Methyl chloride [Chloromethane]440
Methylene chloride440
1,1,2-Trichloroethane440
Vinyl chloride440
Trichloroethylene440
Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex240
LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas240
NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex240
NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas240
Coef Of Var Static Renewal 48Hr Acute D. pulex240
Coef Of Var Static Renewal 48Hr Acute Pimephales promelas240
1,2-Dichloroethane, total weight040
Benzene820
Acenaphthylene820
Acenaphthene820
Acrylonitrile820
Anthracene820
Benzo[b]fluoranthene820
Benzo[k]fluoranthene820
Benzo[a]pyrene820
Chlorobenzene820
Chrysene820
Diethyl phthalate820
Dimethyl phthalate820
Ethylbenzene820
Fluoranthene820
Fluorene820
Hexachlorobutadiene820
Hexachloroethane820
Nitrobenzene820
Phenanthrene820
Pyrene820
Tetrachloroethylene820
1,1-Dichloroethane820
1,1-Dichloroethylene820
1,1,1-Trichloroethane820
Benzo[a]anthracene820
1,2-Dichlorobenzene820
1,2-Dichloropropane820
trans-1,2-Dichloroethylene820
1,2,4-Trichlorobenzene820
1,3-Dichlorobenzene820
1,4-Dichlorobenzene820
2-Chlorophenol820
2-Nitrophenol820
2,4-Dichlorophenol820
2,4-Dimethylphenol820
2,4-Dinitrotoluene820
2,4-Dinitrophenol820
2,6-Dinitrotoluene820

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES LA0000281.

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID LA0000281 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

What this page shows

This public-records page covers NPDES permit LA0000281, held by WESTLAKE VINYLS COMPANY, LP in Geismar, LA, which discharges to the MISSISSIPPI RIVER and is listed as a Major Discharger in administratively continued status. The page lists 78 for the discharger class, 5 pollutants under a numeric limit, and 5 pollutants with an effluent exceedance, with the permit's issue and expiration dates as recorded by EPA.