Clean Water Act discharge permit · NPDES TX0144355
CPNID SST DISCHARGE, Baytown, TX: NPDES TX0144355 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 59Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
CPNID SST DISCHARGE, held by CEDAR PNID AND SUMIKA SEMICONDUCTOR MATERIALS TEXAS INC, holds NPDES permit TX0144355, which discharges to Cedar Bayou Tidal. EPA’s file records it issued January 2, 2024 and expiring January 2, 2029. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | CPNID SST DISCHARGE |
|---|---|
| Permittee as filed | CEDAR PNID AND SUMIKA SEMICONDUCTOR MATERIALS TEXAS INC |
| NPDES ID | TX0144355 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | January 2, 2024 |
| Expiration date | January 2, 2029 |
| Address | Baytown, TX 77523 |
| Receiving water | Cedar Bayou Tidal |
| Subwatershed | Cedar Point Lateral-Cedar Bayou (HUC 120402030106) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 59Pollutants on file
- 59Under a numeric limit
- 3With a violation of any kind
- 3With 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.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Flow, in conduit or thru treatment plant | 4 | 19 | 19 | October 31, 2025 | 652% over the limit |
| BOD, 5-day, 20 deg. C | 4 | 14 | 14 | November 30, 2025 | 156% over the limit |
| Carbon tetrachloride | 2 | 1 | 1 | August 31, 2026 | 92% over the limit |
| Solids, total suspended | 8 | 0 | 0 | ||
| Oil & Grease | 4 | 0 | 0 | ||
| pH | 2 | 0 | 0 | ||
| 1,2-Dichloroethane | 2 | 0 | 0 | ||
| Chloroform | 2 | 0 | 0 | ||
| Toluene | 2 | 0 | 0 | ||
| Benzene | 2 | 0 | 0 | ||
| Acenaphthylene | 2 | 0 | 0 | ||
| Acenaphthene | 2 | 0 | 0 | ||
| Acrylonitrile | 2 | 0 | 0 | ||
| Anthracene | 2 | 0 | 0 | ||
| Benzo[k]fluoranthene | 2 | 0 | 0 | ||
| Benzo[a]pyrene | 2 | 0 | 0 | ||
| Chlorobenzene | 2 | 0 | 0 | ||
| Chrysene | 2 | 0 | 0 | ||
| Diethyl phthalate | 2 | 0 | 0 | ||
| Dimethyl phthalate | 2 | 0 | 0 | ||
| Ethylbenzene | 2 | 0 | 0 | ||
| Fluoranthene | 2 | 0 | 0 | ||
| Fluorene | 2 | 0 | 0 | ||
| Hexachlorobutadiene | 2 | 0 | 0 | ||
| Hexachloroethane | 2 | 0 | 0 | ||
| Methyl chloride [Chloromethane] | 2 | 0 | 0 | ||
| Methylene chloride | 2 | 0 | 0 | ||
| Nitrobenzene | 2 | 0 | 0 | ||
| Phenanthrene | 2 | 0 | 0 | ||
| Pyrene | 2 | 0 | 0 | ||
| Tetrachloroethylene | 2 | 0 | 0 | ||
| 1,1-Dichloroethane | 2 | 0 | 0 | ||
| 1,1-Dichloroethylene | 2 | 0 | 0 | ||
| 1,1,1-Trichloroethane | 2 | 0 | 0 | ||
| 1,1,2-Trichloroethane | 2 | 0 | 0 | ||
| Benzo[a]anthracene | 2 | 0 | 0 | ||
| 1,2-Dichlorobenzene | 2 | 0 | 0 | ||
| 1,2-Dichloropropane | 2 | 0 | 0 | ||
| trans-1,2-Dichloroethylene | 2 | 0 | 0 | ||
| 1,2,4-Trichlorobenzene | 2 | 0 | 0 | ||
| 1,3-Dichlorobenzene | 2 | 0 | 0 | ||
| 1,4-Dichlorobenzene | 2 | 0 | 0 | ||
| 2-Nitrophenol | 2 | 0 | 0 | ||
| 2,4-Dimethylphenol | 2 | 0 | 0 | ||
| 2,4-Dinitrophenol | 2 | 0 | 0 | ||
| 4-Nitrophenol | 2 | 0 | 0 | ||
| 4,6-Dinitro-o-cresol | 2 | 0 | 0 | ||
| Phenol | 2 | 0 | 0 | ||
| Naphthalene | 2 | 0 | 0 | ||
| Di[2-ethylhexyl] phthalate [DEHP] | 2 | 0 | 0 | ||
| Di-n-butyl phthalate | 2 | 0 | 0 | ||
| Vinyl chloride | 2 | 0 | 0 | ||
| Trichloroethylene | 2 | 0 | 0 | ||
| Hexachlorobenzene | 2 | 0 | 0 | ||
| 1,3-Dichloropropylene | 2 | 0 | 0 | ||
| 3,4-Benzofluoranthene | 2 | 0 | 0 | ||
| Chloroethane | 2 | 0 | 0 | ||
| pH range excursions, > 60 minutes | 1 | 0 | 0 | ||
| pH range excursions, monthly total accum | 1 | 0 | 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 |
|---|---|---|
| December 11, 2025 | 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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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID TX0144355 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.