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Clean Water Act discharge permit · NPDES LA0120529

SHINTECH LOUISIANA, LLC- PLAQUEMINE PLANT, Plaquemine, LA: NPDES LA0120529 discharge permit, effluent exceedances, inspections, penalties

SHINTECH LOUISIANA, LLC- PLAQUEMINE PLANT, held by Shintech Louisiana, LLC- Plaquemine Plant, holds NPDES permit LA0120529. EPA’s file records it issued December 6, 2016 and expiring December 5, 2021. 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 filedSHINTECH LOUISIANA, LLC- PLAQUEMINE PLANT
Permittee as filedShintech Louisiana, LLC- Plaquemine Plant
NPDES IDLA0120529
Permit statusEffective
Permit typeIndividual permit
Discharger classMajor discharger
Facility typeNot a publicly owned treatment works
IssuedDecember 6, 2016
Expiration dateDecember 5, 2021
AddressPlaquemine, LA 70764
SubwatershedClaiborne Island (HUC 080701000105)
SIC2821 – Plastics Materials And Resins
Other EPA IDs (FRS)RCRA handler LAD081419418; ICIS-AIR source LA0000002204700118

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 81 are shown.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
BOD, 5-day, 20 deg. C63127February 28, 2026338% over the limit
Solids, total suspended163024October 31, 2025244% over the limit
pH range excursions, > 60 minutes444May 31, 20192,147,483,650% over the limit
Carbon, tot organic [TOC]1283September 30, 2025118% over the limit
pH24102December 31, 2019
Cycles Of Concentration022February 28, 202533% over the limit
Phenol1231December 31, 202218% over the limit
pH range excursions, monthly total accum411May 31, 2019108% over the limit
Flow, in conduit or thru treatment plant4230
Benzene1620
Carbon tetrachloride1220
1,2-Dichloroethane1220
Chloroform1220
Toluene1220
Acenaphthylene1220
Acenaphthene1220
Acrylonitrile1220
Anthracene1220
Benzo[k]fluoranthene1220
Benzo[a]pyrene1220
Chlorobenzene1220
Chrysene1220
Diethyl phthalate1220
Dimethyl phthalate1220
Ethylbenzene1220
Fluoranthene1220
Fluorene1220
Hexachlorobutadiene1220
Hexachloroethane1220
Methyl chloride [Chloromethane]1220
Methylene chloride1220
Nitrobenzene1220
Phenanthrene1220
Pyrene1220
Tetrachloroethylene1220
1,1-Dichloroethane1220
1,1-Dichloroethylene1220
1,1,1-Trichloroethane1220
1,1,2-Trichloroethane1220
Benzo[a]anthracene1220
1,2-Dichlorobenzene1220
1,2-Dichloropropane1220
trans-1,2-Dichloroethylene1220
1,2,4-Trichlorobenzene1220
1,3-Dichlorobenzene1220
1,4-Dichlorobenzene1220
2-Chlorophenol1220
2-Nitrophenol1220
2,4-Dichlorophenol1220
2,4-Dimethylphenol1220
2,4-Dinitrotoluene1220
2,4-Dinitrophenol1220
2,6-Dinitrotoluene1220
4-Nitrophenol1220
4,6-Dinitro-o-cresol1220
Naphthalene1220
Di[2-ethylhexyl] phthalate [DEHP]1220
Di-n-butyl phthalate1220
Vinyl chloride1220
Trichloroethylene1220

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
December 31, 2022Reporting Violations - Failure to submit required report (non-DMR non-pretreatment)ST6
October 31, 2018Reporting Violations - Failure to submit required report (non-DMR non-pretreatment)ST6

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 public-records page covers the NPDES discharge permit LA0120529 held by Shintech Louisiana, LLC- Plaquemine Plant in Plaquemine, LA, which EPA's file records as issued December 6, 2016 and expiring December 5, 2021, with a status of Effective as of October 14, 2026. The page lists 77 pollutants under a numeric limit and 8 pollutants with an effluent exceedance, within the Claiborne Island subwatershed (HUC 080701000105).