Clean Water Act discharge permit · NPDES TX0119792
EQUISTAR CHEMICALS LA PORTE COMPLEX, Deer Park, TX: NPDES TX0119792 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 90Pollutants under a numeric limit
- 13Pollutants with an effluent exceedance
EQUISTAR CHEMICALS LA PORTE COMPLEX, held by EQUISTAR CHEMICALS, LP AND LYONDELLBASELLl ACETYLS, LLC, holds NPDES permit TX0119792, which discharges to Unnamed Ditch, San Jacinto Bay. EPA’s file records it issued October 31, 2014 and expiring October 1, 2018. 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 filed | EQUISTAR CHEMICALS LA PORTE COMPLEX |
|---|---|
| Permittee as filed | EQUISTAR CHEMICALS, LP AND LYONDELLBASELLl ACETYLS, LLC |
| NPDES ID | TX0119792 |
| 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 | October 31, 2014 |
| Expiration date | October 1, 2018 |
| Address | Deer Park, TX 77571 |
| Receiving water | UNNAMED DITCH, SAN JACINTO BAY |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Goose Creek-Frontal Galveston Bay (HUC 120401040706) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 92Pollutants on file
- 90Under a numeric limit
- 83With a violation of any kind
- 13With 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 92 are shown.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Solids, total suspended | 27 | 110 | 52 | February 28, 2026 | 2,303% over the limit |
| Copper, total [as Cu] | 22 | 46 | 31 | June 30, 2026 | 250% over the limit |
| Chlorine, total residual | 11 | 39 | 19 | November 30, 2022 | 840% over the limit |
| E. coli | 28 | 27 | 19 | June 30, 2023 | 99,999% over the limit |
| Cyanide, free available | 0 | 19 | 15 | April 30, 2025 | 80% over the limit |
| BOD, 5-day, 20 deg. C | 27 | 55 | 10 | February 28, 2021 | 537% over the limit |
| Aluminum, total [as Al] | 6 | 20 | 9 | March 31, 2022 | 177% over the limit |
| Oil & Grease | 11 | 27 | 7 | May 31, 2025 | 1,320% over the limit |
| Nitrogen, ammonia total [as N] | 2 | 6 | 6 | March 31, 2018 | 88% over the limit |
| Carbon, tot organic [TOC] | 17 | 26 | 3 | July 31, 2024 | 176% over the limit |
| pH | 14 | 16 | 2 | March 31, 2018 | |
| Flow, in conduit or thru treatment plant | 28 | 45 | 1 | August 31, 2017 | 31% over the limit |
| pH range excursions, > 60 minutes | 1 | 7 | 1 | November 30, 2015 | 2,147,483,650% over the limit |
| Zinc, total [as Zn] | 10 | 15 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 6 | 8 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 6 | 8 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 6 | 8 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 6 | 8 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 6 | 8 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 6 | 8 | 0 | ||
| Hexachlorobenzene | 14 | 7 | 0 | ||
| pH range excursions, monthly total accum | 1 | 7 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | 4 | 6 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Menidia menidia | 4 | 6 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia | 6 | 4 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia | 6 | 4 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | 6 | 4 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | 6 | 4 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidia | 6 | 4 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidia | 6 | 4 | 0 | ||
| Acrylonitrile | 14 | 3 | 0 | ||
| Phenanthrene | 14 | 3 | 0 | ||
| Benzo[a]pyrene | 12 | 3 | 0 | ||
| Benzo[a]anthracene | 12 | 3 | 0 | ||
| Carbon tetrachloride | 8 | 3 | 0 | ||
| 1,2-Dichloroethane | 8 | 3 | 0 | ||
| Chloroform | 8 | 3 | 0 | ||
| Toluene | 8 | 3 | 0 | ||
| Benzene | 8 | 3 | 0 | ||
| Acenaphthylene | 8 | 3 | 0 | ||
| Acenaphthene | 8 | 3 | 0 | ||
| Anthracene | 8 | 3 | 0 | ||
| Benzo[k]fluoranthene | 8 | 3 | 0 | ||
| Chlorobenzene | 8 | 3 | 0 | ||
| Chrysene | 8 | 3 | 0 | ||
| Diethyl phthalate | 8 | 3 | 0 | ||
| Dimethyl phthalate | 8 | 3 | 0 | ||
| Ethylbenzene | 8 | 3 | 0 | ||
| Fluoranthene | 8 | 3 | 0 | ||
| Fluorene | 8 | 3 | 0 | ||
| Hexachlorobutadiene | 8 | 3 | 0 | ||
| Hexachloroethane | 8 | 3 | 0 | ||
| Methyl chloride [Chloromethane] | 8 | 3 | 0 | ||
| Methylene chloride | 8 | 3 | 0 | ||
| Nitrobenzene | 8 | 3 | 0 | ||
| Pyrene | 8 | 3 | 0 | ||
| Tetrachloroethylene | 8 | 3 | 0 | ||
| 1,1-Dichloroethane | 8 | 3 | 0 | ||
| 1,1-Dichloroethylene | 8 | 3 | 0 | ||
| 1,1,1-Trichloroethane | 8 | 3 | 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 |
|---|---|---|
| November 20, 2019 | Permit Violations - Violation Specified in Comment | ST6 |
| June 14, 2017 | 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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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.