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Clean Water Act discharge permit · NPDES LA0071382

WESTLAKE POLYMERS LLC, Lake Charles, LA: NPDES LA0071382 discharge permit, effluent exceedances, inspections, penalties

WESTLAKE POLYMERS LLC holds NPDES permit LA0071382, which discharges to Unname Ditch,Bayou D'Inde,Calc. Rvr. EPA’s file records it issued August 30, 2011 and expiring September 30, 2016. 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 POLYMERS LLC
Permittee as filedWESTLAKE POLYMERS LLC
NPDES IDLA0071382
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
IssuedAugust 30, 2011
Expiration dateSeptember 30, 2016
AddressLake Charles, LA 70664
Receiving waterUNNAME DITCH,BAYOU D'INDE,CALC. RVR
Receiving water impaired303(D) Listed
SubwatershedMaple Fork-Bayou D'Inde (HUC 080802060301)
SIC2821 – Plastics Materials And Resins
Other EPA IDs (FRS)RCRA handler LAD981522048; ICIS-AIR source LA0000002201900127

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 77 are shown.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Solids, total suspended41010June 30, 2016262% over the limit
Oil and grease698November 30, 2017183% over the limit
BOD, 5-day, 20 deg. C466January 31, 202499,999% over the limit
pH895June 30, 2021
pH range excursions, > 60 minutes233January 31, 20232,147,483,650% over the limit
Carbon, tot organic [TOC]231February 29, 200836% over the limit
Copper, total [as Cu]221December 31, 2015131% over the limit
Oil & Grease021July 31, 202328% over the limit
Di[2-ethylhexyl] phthalate [DEHP]811March 31, 200480% over the limit
Mercury, total [as Hg]511June 30, 200890% over the limit
Flow, in conduit or thru treatment plant840
NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)240
NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia240
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)220
Zinc, total [as Zn]110
1,2-Dichloroethane800
Chloroform800
Toluene800
Benzene800
Acenaphthylene800
Acenaphthene800
Acrylonitrile800
Anthracene800
Benzo[b]fluoranthene800
Benzo[k]fluoranthene800
Benzo[a]pyrene800
Chlorobenzene800
Chrysene800
Diethyl phthalate800
Dimethyl phthalate800
Ethylbenzene800
Fluoranthene800
Fluorene800
Hexachloroethane800
Methyl chloride [Chloromethane]800
Methylene chloride800
Nitrobenzene800
Phenanthrene800
Pyrene800
Tetrachloroethylene800
1,1-Dichloroethane800
1,1-Dichloroethylene800
1,1,1-Trichloroethane800
1,1,2-Trichloroethane800
Benzo[a]anthracene800
1,2-Dichlorobenzene800
1,2-Dichloropropane800
trans-1,2-Dichloroethylene800
1,2,4-Trichlorobenzene800
1,3-Dichlorobenzene800
1,4-Dichlorobenzene800
2-Nitrophenol800
2,4-Dimethylphenol800
2,4-Dinitrophenol800
4-Nitrophenol800
4,6-Dinitro-o-cresol800
Phenol800
Naphthalene800
Di-n-butyl phthalate800
Vinyl chloride800

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 LA0071382.

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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Nearby on the register

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

What this page shows

This page is a public-records entry for NPDES permit LA0071382, held by WESTLAKE POLYMERS LLC of Lake Charles, LA, which discharges to Unname Ditch, Bayou D'Inde, Calc. Rvr and is classed as a Major Discharger with an administratively continued status. The page lists 76 as the class figure, 10 pollutants under a numeric limit, and 10 pollutants with an effluent exceedance.