Clean Water Act discharge permit · NPDES TX0053813

SHINTECH FREEPORT PLANT, Freeport, TX: NPDES TX0053813 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MajorDischarger class
69Pollutants under a numeric limit
7Pollutants with an effluent exceedance

SHINTECH FREEPORT PLANT, held by SHINTECH INCORPORATED, holds NPDES permit TX0053813, which discharges to Brazos River Tidal; Old Brazos River Channel Tidal. EPA’s file records it issued December 6, 2019 and expiring December 6, 2024. 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 filed	SHINTECH FREEPORT PLANT
Permittee as filed	SHINTECH INCORPORATED
NPDES ID	TX0053813
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Major discharger
Facility type	Not a publicly owned treatment works
Issued	December 6, 2019
Expiration date	December 6, 2024
Address	Freeport, TX 77541
Receiving water	Brazos River Tidal; Old Brazos River Channel Tidal
Subwatershed	Lower Oyster Creek (HUC 120402050400)
SIC	2821 – Plastics Materials And Resins
Other EPA IDs (FRS)	RCRA handler TXD065095390; ICIS-AIR source TX0000004803900012

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

69Pollutants on file
69Under a numeric limit
66With a violation of any kind
7With an effluent exceedance

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 69 are shown.

Pollutant or measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
Oxygen demand, chem. [high level] [COD]	11	34	25	January 31, 2025	427% over the limit
Enterococci	12	14	14	November 30, 2025	8,834% over the limit
BOD, 5-day, 20 deg. C	6	13	13	April 30, 2026	203% over the limit
pH	16	9	6	November 30, 2023
pH range excursions, > 60 minutes	3	6	6	April 30, 2026	2,147,483,650% over the limit
Oil & Grease	11	11	5	March 31, 2024	416% over the limit
Solids, total suspended	6	4	4	March 31, 2021	868% over the limit
Flow, in conduit or thru treatment plant	16	8	0
Carbon tetrachloride	6	6	0
1,2-Dichloroethane	6	6	0
Chloroform	6	6	0
Toluene	6	6	0
Benzene	6	6	0
Acenaphthylene	6	6	0
Acenaphthene	6	6	0
Acrylonitrile	6	6	0
Anthracene	6	6	0
Benzo[k]fluoranthene	6	6	0
Benzo[a]pyrene	6	6	0
Chlorobenzene	6	6	0
Chrysene	6	6	0
Diethyl phthalate	6	6	0
Dimethyl phthalate	6	6	0
Ethylbenzene	6	6	0
Fluoranthene	6	6	0
Fluorene	6	6	0
Hexachlorobutadiene	6	6	0
Hexachloroethane	6	6	0
Methyl chloride [Chloromethane]	6	6	0
Methylene chloride	6	6	0
Nitrobenzene	6	6	0
Phenanthrene	6	6	0
Pyrene	6	6	0
Tetrachloroethylene	6	6	0
1,1-Dichloroethane	6	6	0
1,1-Dichloroethylene	6	6	0
1,1,1-Trichloroethane	6	6	0
1,1,2-Trichloroethane	6	6	0
Benzo[a]anthracene	6	6	0
1,2-Dichlorobenzene	6	6	0
1,2-Dichloropropane	6	6	0
trans-1,2-Dichloroethylene	6	6	0
1,2,4-Trichlorobenzene	6	6	0
1,3-Dichlorobenzene	6	6	0
1,4-Dichlorobenzene	6	6	0
2-Chlorophenol	6	6	0
2-Nitrophenol	6	6	0
2,4-Dichlorophenol	6	6	0
2,4-Dimethylphenol	6	6	0
2,4-Dinitrotoluene	6	6	0
2,4-Dinitrophenol	6	6	0
2,6-Dinitrotoluene	6	6	0
4-Nitrophenol	6	6	0
4,6-Dinitro-o-cresol	6	6	0
Phenol	6	6	0
Naphthalene	6	6	0
Di[2-ethylhexyl] phthalate [DEHP]	6	6	0
Di-n-butyl phthalate	6	6	0
Vinyl chloride	6	6	0
Trichloroethylene	6	6	0

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

2Single-event violations

Date	What EPA recorded	Agency
April 3, 2025	Permit Violations - Violation Specified in Comment	ST6
July 15, 2019	Permit Violations - Violation Specified in Comment	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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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 TX0053813 there.

Nearby on the register

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

This public-records page covers Clean Water Act discharge permit NPDES TX0053813 for SHINTECH FREEPORT PLANT in Freeport, TX, held by SHINTECH INCORPORATED, with permit status administratively continued and a major discharger classification. The page lists 69 for the discharger class, 7 pollutants under a numeric limit, and 7 pollutants with an effluent exceedance, and it notes the permit was issued December 6, 2019 and expired December 6, 2024.