Clean Water Act discharge permit · NPDES TX0124427
SHIN-ETSU SILICONES OF AMERICA, Freeport, TX: NPDES TX0124427 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 64Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
SHIN-ETSU SILICONES OF AMERICA, held by SHIN-ETSU SILICONES OF AMERICA INC, holds NPDES permit TX0124427, which discharges to Dow Plant A Canal, Seg No. 1201. EPA’s file records it issued July 25, 2019 and expiring July 25, 2024.
SHIN-ETSU SILICONES OF AMERICA, Freeport, Texas: Individual permit TX0124427, held by SHIN-ETSU SILICONES OF AMERICA INC; Administratively continued (past its expiration date and still in force until reissued); issued July 25, 2019, term to July 25, 2024; discharges to DOW PLANT A CANAL, SEG NO. 1201.
- BOD, 5-day, 20 deg. C: 4 limits, 20 violations of any kind, 16 effluent exceedances, latest February 28, 2023, largest 99,999% over the limit.
- pH: 2 limits, 8 violations of any kind, 4 effluent exceedances, latest February 28, 2010.
- Solids, total suspended: 4 limits, 7 violations of any kind, 3 effluent exceedances, latest November 30, 2006, largest 764% over the limit.
- Chloroform: 4 limits, 7 violations of any kind, 3 effluent exceedances, latest August 31, 2023, largest 52% over the limit.
- Benzo[k]fluoranthene: 4 limits, 10 violations of any kind, 2 effluent exceedances, latest August 31, 2006, largest 42% over the limit.
- Flow, in conduit or thru treatment plant: 2 limits, 3 violations of any kind, 1 effluent exceedance, latest June 30, 2008, largest 3% over the limit.
- Enterococci: 3 limits, 1 violation of any kind, 1 effluent exceedance, latest May 31, 2026, largest 126% over the limit.
- Nitrogen, ammonia total [as N]: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Carbon tetrachloride: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- 1,2-Dichloroethane: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Toluene: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Benzene: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Acenaphthylene: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Acenaphthene: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Acrylonitrile: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Anthracene: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Benzo[a]pyrene: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Chlorobenzene: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Chrysene: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Diethyl phthalate: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Dimethyl phthalate: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Ethylbenzene: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Fluoranthene: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Fluorene: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Hexachlorobutadiene: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Hexachloroethane: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Methyl chloride [Chloromethane]: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Methylene chloride: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Nitrobenzene: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Phenanthrene: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Pyrene: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Tetrachloroethylene: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- 1,1-Dichloroethane: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- 1,1-Dichloroethylene: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- 1,1,1-Trichloroethane: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- 1,1,2-Trichloroethane: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Benzo[a]anthracene: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- 1,2-Dichlorobenzene: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- 1,2-Dichloropropane: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- trans-1,2-Dichloroethylene: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- 1,2,4-Trichlorobenzene: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- 1,3-Dichlorobenzene: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- 1,4-Dichlorobenzene: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- 2-Chlorophenol: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- 2-Nitrophenol: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- 2,4-Dichlorophenol: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- 2,4-Dimethylphenol: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- 2,4-Dinitrotoluene: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- 2,4-Dinitrophenol: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- 2,6-Dinitrotoluene: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- 4-Nitrophenol: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- 4,6-Dinitro-o-cresol: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Phenol: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Naphthalene: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Di[2-ethylhexyl] phthalate [DEHP]: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Di-n-butyl phthalate: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Vinyl chloride: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Trichloroethylene: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Hexachlorobenzene: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- 1,3-Dichloropropylene: 4 limits, 8 violations of any kind, 0 effluent exceedances.
SHIN-ETSU SILICONES OF AMERICA among its neighbors
EPA’s permit file holds 130 discharge permits in the Lower Oyster Creek subwatershed (HUC 120402050400), TX0124427 among them. Its county holds 522, 24 of them major permits; TX0124427 is a major permit.
Other permits in the Lower Oyster Creek subwatershed (HUC 120402050400)
- 32010 AMBERJACK DR, Richwood: TXR1506NA, minor permit, discharging to BASTROP BAYOU TIDAL, permit term to March 4, 2028
- 3M ANGLETON, Angleton: TXRNEBP38, minor permit, permit term to August 13, 2026
- ABIGAIL ARIAS PARK, Angleton: TXR1531XY, minor permit, discharging to BASTROP BAYOU, permit term to March 4, 2028
- AIR LIQUIDE FREEPORT ASU, Freeport: TX0065021, minor permit, discharging to EAST UNION BAYOU;INTRACOASTAL CANAL, permit term to October 29, 2024
- ALAMO CONCRETE PRODUCTS PLANT #106, Freeport: TXG111438, minor permit, discharging to DOW BARGE CANAL, permit term to November 7, 2021
- AMBER RIDGE APARTMENTS, Angleton: TXR1564QE, minor permit, discharging to UNNAMED TRIBUTARY BASTROP CREEK, permit term to March 4, 2028
- ANGLE ACRES WWTP, Rosharon: TX0088366, minor permit, discharging to UNNAMED DITCH, BASTROP BAYOU TIDAL, permit term to September 1, 2018
- ANGLE ACRES WWTP, Angleton: TX0146323, not classed
- ANGLE ACRES WWTP, Angleton: TX0147044, not classed
- ANGLETON DRAINAGE DISTRICT MS4, Angleton: TXR040137, minor permit, discharging to OYSTER CREEK ABOVE TIDAL, permit term to January 23, 2024
Identity
| Facility as filed | SHIN-ETSU SILICONES OF AMERICA |
|---|---|
| Permittee as filed | SHIN-ETSU SILICONES OF AMERICA INC |
| NPDES ID | TX0124427 |
| 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 | July 25, 2019 |
| Expiration date | July 25, 2024 |
| Address | Freeport, TX 77541 |
| Receiving water | DOW PLANT A CANAL, SEG NO. 1201 |
| Subwatershed | Lower Oyster Creek (HUC 120402050400) |
| SIC | 2869 – Industrial Organic Chemicals |
| Other EPA IDs (FRS) | RCRA handler TXR000051029 |
Effluent limits and exceedances
- 65Pollutants on file
- 64Under a numeric limit
- 65With a violation of any kind
- 7With 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 65 are shown.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 4 | 20 | 16 | February 28, 2023 | 99,999% over the limit |
| pH | 2 | 8 | 4 | February 28, 2010 | |
| Solids, total suspended | 4 | 7 | 3 | November 30, 2006 | 764% over the limit |
| Chloroform | 4 | 7 | 3 | August 31, 2023 | 52% over the limit |
| Benzo[k]fluoranthene | 4 | 10 | 2 | August 31, 2006 | 42% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 3 | 1 | June 30, 2008 | 3% over the limit |
| Enterococci | 3 | 1 | 1 | May 31, 2026 | 126% over the limit |
| Nitrogen, ammonia total [as N] | 4 | 8 | 0 | ||
| Carbon tetrachloride | 4 | 8 | 0 | ||
| 1,2-Dichloroethane | 4 | 8 | 0 | ||
| Toluene | 4 | 8 | 0 | ||
| Benzene | 4 | 8 | 0 | ||
| Acenaphthylene | 4 | 8 | 0 | ||
| Acenaphthene | 4 | 8 | 0 | ||
| Acrylonitrile | 4 | 8 | 0 | ||
| Anthracene | 4 | 8 | 0 | ||
| Benzo[a]pyrene | 4 | 8 | 0 | ||
| Chlorobenzene | 4 | 8 | 0 | ||
| Chrysene | 4 | 8 | 0 | ||
| Diethyl phthalate | 4 | 8 | 0 | ||
| Dimethyl phthalate | 4 | 8 | 0 | ||
| Ethylbenzene | 4 | 8 | 0 | ||
| Fluoranthene | 4 | 8 | 0 | ||
| Fluorene | 4 | 8 | 0 | ||
| Hexachlorobutadiene | 4 | 8 | 0 | ||
| Hexachloroethane | 4 | 8 | 0 | ||
| Methyl chloride [Chloromethane] | 4 | 8 | 0 | ||
| Methylene chloride | 4 | 8 | 0 | ||
| Nitrobenzene | 4 | 8 | 0 | ||
| Phenanthrene | 4 | 8 | 0 | ||
| Pyrene | 4 | 8 | 0 | ||
| Tetrachloroethylene | 4 | 8 | 0 | ||
| 1,1-Dichloroethane | 4 | 8 | 0 | ||
| 1,1-Dichloroethylene | 4 | 8 | 0 | ||
| 1,1,1-Trichloroethane | 4 | 8 | 0 | ||
| 1,1,2-Trichloroethane | 4 | 8 | 0 | ||
| Benzo[a]anthracene | 4 | 8 | 0 | ||
| 1,2-Dichlorobenzene | 4 | 8 | 0 | ||
| 1,2-Dichloropropane | 4 | 8 | 0 | ||
| trans-1,2-Dichloroethylene | 4 | 8 | 0 | ||
| 1,2,4-Trichlorobenzene | 4 | 8 | 0 | ||
| 1,3-Dichlorobenzene | 4 | 8 | 0 | ||
| 1,4-Dichlorobenzene | 4 | 8 | 0 | ||
| 2-Chlorophenol | 4 | 8 | 0 | ||
| 2-Nitrophenol | 4 | 8 | 0 | ||
| 2,4-Dichlorophenol | 4 | 8 | 0 | ||
| 2,4-Dimethylphenol | 4 | 8 | 0 | ||
| 2,4-Dinitrotoluene | 4 | 8 | 0 | ||
| 2,4-Dinitrophenol | 4 | 8 | 0 | ||
| 2,6-Dinitrotoluene | 4 | 8 | 0 | ||
| 4-Nitrophenol | 4 | 8 | 0 | ||
| 4,6-Dinitro-o-cresol | 4 | 8 | 0 | ||
| Phenol | 4 | 8 | 0 | ||
| Naphthalene | 4 | 8 | 0 | ||
| Di[2-ethylhexyl] phthalate [DEHP] | 4 | 8 | 0 | ||
| Di-n-butyl phthalate | 4 | 8 | 0 | ||
| Vinyl chloride | 4 | 8 | 0 | ||
| Trichloroethylene | 4 | 8 | 0 | ||
| Hexachlorobenzene | 4 | 8 | 0 | ||
| 1,3-Dichloropropylene | 4 | 8 | 0 |
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES TX0124427.
Inspections
EPA’s inspection file holds no inspection for NPDES TX0124427.
Formal enforcement and penalties
0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
Informal enforcement
EPA’s informal enforcement file holds no action for NPDES TX0124427.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.