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Clean Water Act discharge permit · NPDES TX0134465

MONT BELVIEU HATCHERVILLE COMPLEX, Baytown, TX: NPDES TX0134465 discharge permit, effluent exceedances, inspections, penalties

MONT BELVIEU HATCHERVILLE COMPLEX, held by ENTERPRISE PRODUCTS OPERATING LLC, holds NPDES permit TX0134465, which discharges to Unnamed Ditch;Ditch Adj To The Ciwa; Cedar Bayou. EPA’s file records it issued December 13, 2016 and expiring August 1, 2020. 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 filedMONT BELVIEU HATCHERVILLE COMPLEX
Permittee as filedENTERPRISE PRODUCTS OPERATING LLC
NPDES IDTX0134465
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
IssuedDecember 13, 2016
Expiration dateAugust 1, 2020
AddressBaytown, TX 77521
Receiving waterUNNAMED DITCH;DITCH ADJ TO THE CIWA; CEDAR BAYOU
SubwatershedCedar Bayou Lake-Cedar Bayou (HUC 120402030104)

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
Solids, total suspended243030January 31, 2025167% over the limit
pH122115December 31, 2022
Carbon, tot organic [TOC]91712August 31, 202379% over the limit
Flow, in conduit or thru treatment plant2853April 30, 201927% over the limit
Whole Effluent Toxicity [WET] - C. dubia0262December 31, 202218% over the limit
Oil & Grease1162June 30, 202025% over the limit
Phenanthrene611October 31, 2018100% over the limit
Sulfate, total [as SO4]011August 31, 20241% over the limit
Zinc, total [as Zn]011June 30, 202625% over the limit
Solids, total dissolved011July 31, 202520% over the limit
Whole Effluent Toxicity [WET] - P. promelas0240
NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas240
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas240
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas240
NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia220
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia220
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia220
BOD, 5-day, 20 deg. C1900
Benzene1200
Acrylonitrile1200
Benzo[a]pyrene1200
Benzo[a]anthracene1200
1,2-Dichloroethane, total weight1200
1,2-Dichloropropane1200
Di[2-ethylhexyl] phthalate [DEHP]1200
Vinyl chloride1200
Hexachlorobenzene1200
1,3-Dichloropropylene1000
Methylene chloride800
Carbon tetrachloride600
Chloroform600
Toluene600
Acenaphthylene600
Acenaphthene600
Anthracene600
Benzo[k]fluoranthene600
Chlorobenzene600
Chrysene600
Diethyl phthalate600
Dimethyl phthalate600
Ethylbenzene600
Fluoranthene600
Fluorene600
Hexachlorobutadiene600
Hexachloroethane600
Methyl chloride [Chloromethane]600
Nitrobenzene600
Pyrene600
Tetrachloroethylene600
1,1-Dichloroethane600
1,1-Dichloroethylene600
1,1,1-Trichloroethane600
1,1,2-Trichloroethane600
1,2-Dichlorobenzene600
trans-1,2-Dichloroethylene600
1,2,4-Trichlorobenzene600
1,3-Dichlorobenzene600
1,4-Dichlorobenzene600
2-Chlorophenol600
2-Nitrophenol600

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
June 9, 2026Permit 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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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 TX0134465 for the MONT BELVIEU HATCHERVILLE COMPLEX in Baytown, TX, held by ENTERPRISE PRODUCTS OPERATING LLC, with a Major Discharger class of 78 and a permit status of administratively continued. The figures listed are 10 pollutants under a numeric limit and 10 pollutants with an effluent exceedance, with the permit issued December 13, 2016 and expiring August 1, 2020.