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Clean Water Act discharge permit · NPDES LA0127268

LACC, LLC US - ETHYLENE & DERIVATIVES PLANT, Westlake, LA: NPDES LA0127268 discharge permit, effluent exceedances, inspections, penalties

LACC, LLC US - ETHYLENE & DERIVATIVES PLANT holds NPDES permit LA0127268. EPA’s file records it issued April 20, 2018 and expiring May 31, 2023. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedLACC, LLC US - ETHYLENE & DERIVATIVES PLANT
Permittee as filedLACC, LLC US - ETHYLENE & DERIVATIVES PLANT
NPDES IDLA0127268
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
IssuedApril 20, 2018
Expiration dateMay 31, 2023
AddressWestlake, LA 70669
Receiving water impaired303(D) Listed
SubwatershedMaple Fork-Bayou D'Inde (HUC 080802060301)
Other EPA IDs (FRS)RCRA handler LAR000080861; ICIS-AIR source LA0000002201900488

Cited to the EPA ICIS-NPDES permit file (ECHO 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 86 are shown.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Solids, total suspended44242October 31, 2023297% over the limit
BOD, 5-day, 20 deg. C23333September 30, 202499,999% over the limit
Chloroform288December 31, 2025427% over the limit
pH1066September 30, 2023
pH range excursions, monthly total accum144October 31, 2020118% over the limit
Oil & Grease422March 31, 2024607% over the limit
Carbon, tot organic [TOC]411September 30, 201919% over the limit
Benzene311May 31, 202442% over the limit
pH range excursions, > 60 minutes111November 30, 20192,147,483,650% over the limit
Hexachlorobenzene8100
1,4-Dichlorobenzene220
2,4-Dimethylphenol220
Phenol220
Flow, in conduit or thru treatment plant1010
Hexachlorobutadiene800
Bromoform600
PCB-1254600
Tetrachloroethane, total600
Whole effluent toxicity - retest #1400
Whole effluent toxicity - retest #2400
WET, sublethal retest #1400
WET, sublethal retest #2400
Whole Effluent Toxicity - Retest #3400
Whole Effluent Toxicity, Sub-Lethal Retest #3400
Copper, total [as Cu]200
Carbon tetrachloride200
1,2-Dichloroethane200
Toluene200
Acenaphthylene200
Acenaphthene200
Acrylonitrile200
Anthracene200
Benzo[b]fluoranthene200
Benzo[k]fluoranthene200
Benzo[a]pyrene200
Chlorobenzene200
Chrysene200
Diethyl phthalate200
Dimethyl phthalate200
Ethylbenzene200
Fluoranthene200
Fluorene200
Hexachloroethane200
Methyl chloride [Chloromethane]200
Methylene chloride200
Nitrobenzene200
Phenanthrene200
Pyrene200
Tetrachloroethylene200
1,1-Dichloroethane200
1,1-Dichloroethylene200
1,1,1-Trichloroethane200
1,1,2-Trichloroethane200
Benzo[a]anthracene200
1,2-Dichlorobenzene200
1,2-Dichloropropane200
trans-1,2-Dichloroethylene200
1,2,4-Trichlorobenzene200
1,3-Dichlorobenzene200
2-Chlorophenol200

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

DateWhat EPA recordedAgency
March 31, 2026Reporting Violations - Failure to submit required report (non-DMR non-pretreatment)ST6
July 31, 2023Reporting Violations - Failure to submit required report (non-DMR non-pretreatment)ST6
December 31, 2021Reporting Violations - Failure to submit required report (non-DMR non-pretreatment)ST6
September 22, 2021Effluent Violations - Unauthorized DischargeST6
August 8, 2021Monitoring Violations - Analysis not ConductedST6
May 24, 2021Effluent Violations - Unauthorized DischargeST6
December 31, 2020Reporting Violations - Failure to NotifyST6
February 28, 2020Monitoring Violations - Failure to Monitor for Non-Toxicity RequirementsST6
December 31, 2019Reporting Violations - Failure to NotifyST6
December 8, 2019Monitoring Violations - Frequency of Sampling ViolationST6
August 1, 2019Failure to properly install, initiate, or fully implement industrial stormwater controlsST6
May 31, 2019Monitoring Violations - Failure to Monitor for Non-Toxicity RequirementsST6
March 31, 2019Reporting Violations - Failure to submit required report (non-DMR non-pretreatment)ST6
February 28, 2019Management Practice Violations - Failure to Maintain RecordsST6
January 31, 2019Monitoring Violations - Frequency of Sampling ViolationST6

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 September 15, 2026.

What this page shows

This public-records page covers Clean Water Act NPDES permit LA0127268 for LACC, LLC US - ETHYLENE & DERIVATIVES PLANT in Westlake, LA, listed as administratively continued with a Major Discharger class. The page lists 86 pollutants under a numeric limit and 9 pollutants with an effluent exceedance, with the permit shown as issued April 20, 2018 and expiring May 31, 2023.