Clean Water Act discharge permit · NPDES TX0087254
SI GROUP BAYTOWN, Baytown, TX: NPDES TX0087254 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 77Pollutants under a numeric limit
- 29Pollutants with an effluent exceedance
SI GROUP BAYTOWN, held by SI GROUP INC, holds NPDES permit TX0087254, which discharges to Hcfcd G101-00-00;Freshwater Bayou Tidal. EPA’s file records it issued December 19, 2018 and expiring December 19, 2023. 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 | SI GROUP BAYTOWN |
|---|---|
| Permittee as filed | SI GROUP INC |
| NPDES ID | TX0087254 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | December 19, 2018 |
| Expiration date | December 19, 2023 |
| Address | Baytown, TX 77520 |
| Receiving water | HCFCD G101-00-00;FRESHWATER BAYOU TIDAL |
| Subwatershed | Goose Creek-Frontal Galveston Bay (HUC 120401040706) |
| SIC | 2869 – Industrial Organic Chemicals |
| Other EPA IDs (FRS) | RCRA handler TXD980878052; ICIS-AIR source TX0000004820100822 |
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
- 91Pollutants on file
- 77Under a numeric limit
- 91With a violation of any kind
- 29With 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 91 are shown.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Whole Effluent Toxicity [WET] - C. dubia | 8 | 16 | 12 | March 31, 2026 | 68% over the limit |
| pH | 2 | 10 | 8 | May 31, 2024 | |
| Whole Effluent Toxicity [WET] - P. promelas | 0 | 8 | 8 | March 31, 2026 | 100% over the limit |
| Carbon, tot organic [TOC] | 1 | 20 | 7 | September 30, 2009 | 1,247% over the limit |
| Hexachlorobenzene | 4 | 14 | 6 | December 31, 2022 | 22,448% over the limit |
| BOD, 5-day, 20 deg. C | 2 | 9 | 5 | February 29, 2008 | 896% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 12 | 4 | January 31, 2008 | 75% over the limit |
| Oil & Grease | 1 | 16 | 3 | December 31, 2020 | 450% over the limit |
| Acrylonitrile | 4 | 11 | 3 | December 31, 2022 | 176% over the limit |
| Benzo[a]pyrene | 4 | 11 | 3 | December 31, 2020 | 210% over the limit |
| Benzo[a]anthracene | 4 | 11 | 3 | December 31, 2020 | 210% over the limit |
| Acenaphthylene | 2 | 8 | 2 | December 31, 2020 | 376% over the limit |
| Acenaphthene | 2 | 8 | 2 | December 31, 2020 | 376% over the limit |
| Benzo[k]fluoranthene | 2 | 8 | 2 | December 31, 2020 | 376% over the limit |
| Phenanthrene | 2 | 8 | 2 | December 31, 2020 | 376% over the limit |
| Phenol | 2 | 8 | 2 | December 31, 2020 | 99% over the limit |
| Di-n-butyl phthalate | 2 | 8 | 2 | December 31, 2020 | 126% over the limit |
| Solids, total suspended | 2 | 4 | 2 | November 30, 2024 | 10% over the limit |
| Anthracene | 2 | 7 | 1 | December 31, 2020 | 138% over the limit |
| Benzo[b]fluoranthene | 2 | 7 | 1 | December 31, 2020 | 126% over the limit |
| Chrysene | 2 | 7 | 1 | December 31, 2020 | 138% over the limit |
| Dimethyl phthalate | 2 | 7 | 1 | December 31, 2020 | 138% over the limit |
| Fluoranthene | 2 | 7 | 1 | December 31, 2020 | 106% over the limit |
| Fluorene | 2 | 7 | 1 | December 31, 2020 | 138% over the limit |
| Pyrene | 2 | 7 | 1 | December 31, 2020 | 126% over the limit |
| 2-Nitrophenol | 2 | 7 | 1 | December 31, 2020 | 39% over the limit |
| 2,4-Dimethylphenol | 2 | 7 | 1 | December 31, 2020 | 138% over the limit |
| 4,6-Dinitro-o-cresol | 2 | 7 | 1 | December 31, 2020 | 15% over the limit |
| Naphthalene | 2 | 7 | 1 | December 31, 2020 | 19% over the limit |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 20 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 2 | 20 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 20 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas | 2 | 20 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 20 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas | 2 | 20 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 20 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas | 2 | 20 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 14 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 14 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 14 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 14 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 0 | 10 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidia | 0 | 10 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 0 | 10 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidia | 0 | 10 | 0 | ||
| Carbon tetrachloride | 4 | 8 | 0 | ||
| Hexachlorobutadiene | 4 | 8 | 0 | ||
| Hexachloroethane | 4 | 8 | 0 | ||
| 1,1-Dichloroethylene | 4 | 8 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 0 | 7 | 0 | ||
| 1,2-Dichloroethane, total weight | 4 | 6 | 0 | ||
| Chloroform | 2 | 6 | 0 | ||
| Toluene | 2 | 6 | 0 | ||
| Benzene | 2 | 6 | 0 | ||
| Chlorobenzene | 2 | 6 | 0 | ||
| Diethyl phthalate | 2 | 6 | 0 | ||
| Ethylbenzene | 2 | 6 | 0 | ||
| Methyl chloride [Chloromethane] | 2 | 6 | 0 | ||
| Methylene chloride | 2 | 6 | 0 | ||
| Nitrobenzene | 2 | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES TX0087254.
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 October 14, 2026.