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Clean Water Act discharge permit · NPDES TX0067946

SI GROUP TEXAS OPERATIONS, Freeport, TX: NPDES TX0067946 discharge permit, effluent exceedances, inspections, penalties

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 (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedSI GROUP TEXAS OPERATIONS
Permittee as filedSI GROUP INC
NPDES IDTX0067946
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedSeptember 26, 2019
Expiration dateSeptember 26, 2024
AddressFreeport, TX 77541
Receiving waterDOW CHEMICAL CO WASTEWATER CANAL;BRAZOS RV
SubwatershedLower Oyster Creek (HUC 120402050400)
SIC2865 – Cyclic Crudes And Intermediates
Other EPA IDs (FRS)RCRA handler TXD010797389; ICIS-AIR source TX0000004803900033

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

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 measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Flow, in conduit or thru treatment plant27359September 30, 2019346% over the limit
Phenol33722February 28, 20231,295% over the limit
Flow [dry weather]22319February 28, 2015157% over the limit
BOD, 5-day, 20 deg. C22713September 30, 2021170% over the limit
pH43512March 31, 2023
Oil & Grease32111September 30, 2019104% over the limit
Carbon, tot organic [TOC]3161April 30, 2006304% over the limit
4,6-Dinitro-o-cresol231August 31, 200120% over the limit
Solids, total suspended2140
4-Nitrophenol260
Carbon tetrachloride240
Chloroform240
Toluene240
Benzene240
Acenaphthylene240
Acenaphthene240
Acrylonitrile240
Anthracene240
Benzo[k]fluoranthene240
Benzo[a]pyrene240
Chlorobenzene240
Chrysene240
Diethyl phthalate240
Dimethyl phthalate240
Nitrobenzene240
Phenanthrene240
Pyrene240
Tetrachloroethylene240
1,1-Dichloroethane240
1,1-Dichloroethylene240
1,1,1-Trichloroethane240
trans-1,2-Dichloroethylene240
1,2,4-Trichlorobenzene240
1,3-Dichlorobenzene240
1,4-Dichlorobenzene240
2-Nitrophenol240
2,4-Dimethylphenol240
2,4-Dinitrophenol240
1,2-Dichloroethane220
Ethylbenzene220
Fluoranthene220
Fluorene220
Hexachlorobutadiene220
Hexachloroethane220
Methyl chloride [Chloromethane]220
Methylene chloride220
1,1,2-Trichloroethane220
Benzo[a]anthracene220
1,2-Dichlorobenzene220
1,2-Dichloropropane220
Naphthalene220
Di[2-ethylhexyl] phthalate [DEHP]220
Di-n-butyl phthalate220
Vinyl chloride220
Trichloroethylene220
Hexachlorobenzene220
1,3-Dichloropropylene220
3,4-Benzofluoranthene220
Chloroethane220
1,3-Dichloropropene020

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
July 15, 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 October 14, 2026.

What this page shows

This public-records page covers Clean Water Act NPDES permit TX0067946, held by SI GROUP INC for SI GROUP TEXAS OPERATIONS in Freeport, TX, which discharges to Dow Chemical Co Wastewater Canal;Brazos Rv within the Lower Oyster Creek (HUC 120402050400) subwatershed. The permit is listed as administratively continued, with a permit status of Minor Discharger class, 60 pollutants under a numeric limit, and 8 pollutants with an effluent exceedance. The file records the permit as issued September 26, 2019 and expiring September 26, 2024, as of the October 14, 2026 load date.