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Clean Water Act discharge permit · NPDES TX0007412

DEER PARK PVC PLANT, Deer Park, TX: NPDES TX0007412 discharge permit, effluent exceedances, inspections, penalties

DEER PARK PVC PLANT, held by OXY VINYLS LP, holds NPDES permit TX0007412, which discharges to Patrick Bayou, Houston Ship Channel. EPA’s file records it issued March 8, 2018 and expiring May 1, 2022. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedDEER PARK PVC PLANT
Permittee as filedOXY VINYLS LP
NPDES IDTX0007412
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
IssuedMarch 8, 2018
Expiration dateMay 1, 2022
AddressDeer Park, TX 77536
Receiving waterPATRICK BAYOU, HOUSTON SHIP CHANNEL
Receiving water impaired303(D) Listed
SubwatershedVince Bayou-Buffalo Bayou (HUC 120401040703)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

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 83 are shown.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
pH8128October 31, 2025
Chloroform464March 31, 2019155% over the limit
Flow, in conduit or thru treatment plant882November 30, 20093,329% over the limit
Nickel, total [as Ni]031November 30, 2009300% over the limit
Tetrachloroethylene450
Trichloroethylene450
Vinyl chloride350
Carbon, tot organic [TOC]640
Solids, total suspended240
Coliform, fecal general230
1,2-Dichloroethane320
BOD, 5-day, 20 deg. C220
Carbon tetrachloride220
Toluene220
Benzene220
Acenaphthylene220
Acenaphthene220
Acrylonitrile220
Anthracene220
Benzo[b]fluoranthene220
Benzo[k]fluoranthene220
Benzo[a]pyrene220
Chlorobenzene220
Chrysene220
Diethyl phthalate220
Dimethyl phthalate220
Ethylbenzene220
Fluoranthene220
Fluorene220
Hexachlorobutadiene220
Hexachloroethane220
Methyl chloride [Chloromethane]220
Nitrobenzene220
Phenanthrene220
Pyrene220
1,1-Dichloroethane220
1,1-Dichloroethylene220
1,1,1-Trichloroethane220
1,1,2-Trichloroethane220
Benzo[a]anthracene220
1,2-Dichlorobenzene220
1,2-Dichloropropane220
trans-1,2-Dichloroethylene220
1,2,4-Trichlorobenzene220
1,3-Dichlorobenzene220
1,4-Dichlorobenzene220
2-Chlorophenol220
2-Nitrophenol220
2,4-Dichlorophenol220
2,4-Dimethylphenol220
2,4-Dinitrotoluene220
2,4-Dinitrophenol220
2,6-Dinitrotoluene220
4-Nitrophenol220
4,6-Dinitro-o-cresol220
Phenol220
Naphthalene220
Di[2-ethylhexyl] phthalate [DEHP]220
Di-n-butyl phthalate220
Hexachlorobenzene220

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
November 7, 2024Permit Violations - Violation Specified in CommentST6

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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How we handle your data → Privacy

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 TX0007412 there.

Nearby on the register

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