Clean Water Act discharge permit · NPDES TX0067946
SI GROUP TEXAS OPERATIONS, Freeport, TX: NPDES TX0067946 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 60Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
SI GROUP TEXAS OPERATIONS, held by SI GROUP INC, holds NPDES permit TX0067946, which discharges to Dow Chemical Co Wastewater Canal;Brazos Rv. EPA’s file records it issued September 26, 2019 and expiring September 26, 2024. 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 | SI GROUP TEXAS OPERATIONS |
|---|---|
| Permittee as filed | SI GROUP INC |
| NPDES ID | TX0067946 |
| 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 | September 26, 2019 |
| Expiration date | September 26, 2024 |
| Address | Freeport, TX 77541 |
| Receiving water | DOW CHEMICAL CO WASTEWATER CANAL;BRAZOS RV |
| Subwatershed | Lower Oyster Creek (HUC 120402050400) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 61Pollutants on file
- 60Under a numeric limit
- 60With a violation of any kind
- 8With 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 61 are shown.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Flow, in conduit or thru treatment plant | 2 | 73 | 59 | September 30, 2019 | 346% over the limit |
| Phenol | 3 | 37 | 22 | February 28, 2023 | 1,295% over the limit |
| Flow [dry weather] | 2 | 23 | 19 | February 28, 2015 | 157% over the limit |
| BOD, 5-day, 20 deg. C | 2 | 27 | 13 | September 30, 2021 | 170% over the limit |
| pH | 4 | 35 | 12 | March 31, 2023 | |
| Oil & Grease | 3 | 21 | 11 | September 30, 2019 | 104% over the limit |
| Carbon, tot organic [TOC] | 3 | 16 | 1 | April 30, 2006 | 304% over the limit |
| 4,6-Dinitro-o-cresol | 2 | 3 | 1 | August 31, 2001 | 20% over the limit |
| Solids, total suspended | 2 | 14 | 0 | ||
| 4-Nitrophenol | 2 | 6 | 0 | ||
| Carbon tetrachloride | 2 | 4 | 0 | ||
| Chloroform | 2 | 4 | 0 | ||
| Toluene | 2 | 4 | 0 | ||
| Benzene | 2 | 4 | 0 | ||
| Acenaphthylene | 2 | 4 | 0 | ||
| Acenaphthene | 2 | 4 | 0 | ||
| Acrylonitrile | 2 | 4 | 0 | ||
| Anthracene | 2 | 4 | 0 | ||
| Benzo[k]fluoranthene | 2 | 4 | 0 | ||
| Benzo[a]pyrene | 2 | 4 | 0 | ||
| Chlorobenzene | 2 | 4 | 0 | ||
| Chrysene | 2 | 4 | 0 | ||
| Diethyl phthalate | 2 | 4 | 0 | ||
| Dimethyl phthalate | 2 | 4 | 0 | ||
| Nitrobenzene | 2 | 4 | 0 | ||
| Phenanthrene | 2 | 4 | 0 | ||
| Pyrene | 2 | 4 | 0 | ||
| Tetrachloroethylene | 2 | 4 | 0 | ||
| 1,1-Dichloroethane | 2 | 4 | 0 | ||
| 1,1-Dichloroethylene | 2 | 4 | 0 | ||
| 1,1,1-Trichloroethane | 2 | 4 | 0 | ||
| trans-1,2-Dichloroethylene | 2 | 4 | 0 | ||
| 1,2,4-Trichlorobenzene | 2 | 4 | 0 | ||
| 1,3-Dichlorobenzene | 2 | 4 | 0 | ||
| 1,4-Dichlorobenzene | 2 | 4 | 0 | ||
| 2-Nitrophenol | 2 | 4 | 0 | ||
| 2,4-Dimethylphenol | 2 | 4 | 0 | ||
| 2,4-Dinitrophenol | 2 | 4 | 0 | ||
| 1,2-Dichloroethane | 2 | 2 | 0 | ||
| Ethylbenzene | 2 | 2 | 0 | ||
| Fluoranthene | 2 | 2 | 0 | ||
| Fluorene | 2 | 2 | 0 | ||
| Hexachlorobutadiene | 2 | 2 | 0 | ||
| Hexachloroethane | 2 | 2 | 0 | ||
| Methyl chloride [Chloromethane] | 2 | 2 | 0 | ||
| Methylene chloride | 2 | 2 | 0 | ||
| 1,1,2-Trichloroethane | 2 | 2 | 0 | ||
| Benzo[a]anthracene | 2 | 2 | 0 | ||
| 1,2-Dichlorobenzene | 2 | 2 | 0 | ||
| 1,2-Dichloropropane | 2 | 2 | 0 | ||
| Naphthalene | 2 | 2 | 0 | ||
| Di[2-ethylhexyl] phthalate [DEHP] | 2 | 2 | 0 | ||
| Di-n-butyl phthalate | 2 | 2 | 0 | ||
| Vinyl chloride | 2 | 2 | 0 | ||
| Trichloroethylene | 2 | 2 | 0 | ||
| Hexachlorobenzene | 2 | 2 | 0 | ||
| 1,3-Dichloropropylene | 2 | 2 | 0 | ||
| 3,4-Benzofluoranthene | 2 | 2 | 0 | ||
| Chloroethane | 2 | 2 | 0 | ||
| 1,3-Dichloropropene | 0 | 2 | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| July 15, 2026 | 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.