Clean Water Act discharge permit · NPDES CTP000073
STANCHEM, INCORPORATED, East Berlin, CT: NPDES CTP000073 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 56Pollutants under a numeric limit
- 9Pollutants with an effluent exceedance
STANCHEM, INCORPORATED, held by STAN CHEM INC, holds NPDES permit CTP000073, which discharges to Connecticut River. EPA’s file records it issued September 18, 2009 and expiring September 30, 2014. 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 | STANCHEM, INCORPORATED |
|---|---|
| Permittee as filed | STAN CHEM INC |
| NPDES ID | CTP000073 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual industrial user permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | September 18, 2009 |
| Expiration date | September 30, 2014 |
| Issuing agency | CT DEP |
| Address | East Berlin, CT 06023 |
| Receiving water | CONNECTICUT RIVER |
| Receiving water impaired | 303(D) Listed |
| SIC | 2821 – Plastics Materials And Resins |
| Other EPA IDs (FRS) | RCRA handler CTD047711346; ICIS-AIR source CT0000000900300001 |
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
- 58Pollutants on file
- 56Under a numeric limit
- 18With a violation of any kind
- 9With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 2 | 29 | 27 | April 30, 2023 | 190% over the limit |
| Zinc, total [as Zn] | 5 | 16 | 11 | July 31, 2019 | 284% over the limit |
| pH | 4 | 47 | 9 | December 31, 2021 | |
| pH, minimum | 0 | 4 | 4 | February 28, 2022 | |
| Flow, maximum during 24 hr period | 2 | 23 | 3 | March 31, 2022 | 66% over the limit |
| Flow rate | 2 | 16 | 2 | September 30, 2016 | 400% over the limit |
| pH, maximum | 0 | 2 | 2 | February 28, 2022 | |
| Lead, total [as Pb] | 5 | 7 | 1 | January 31, 2006 | 444% over the limit |
| Di-n-butyl phthalate | 4 | 5 | 1 | May 31, 2011 | 70% over the limit |
| Flow rate | 1 | 18 | 0 | ||
| Flow | 2 | 9 | 0 | ||
| Cyanide, total [as CN] | 4 | 8 | 0 | ||
| Toluene | 4 | 4 | 0 | ||
| Methylene chloride | 4 | 4 | 0 | ||
| Tetrachloroethylene | 4 | 4 | 0 | ||
| Trichloroethylene | 4 | 4 | 0 | ||
| Copper, total [as Cu] | 1 | 2 | 0 | ||
| 2-Butanone | 1 | 1 | 0 | ||
| Carbon tetrachloride | 4 | 0 | 0 | ||
| 1,2-Dichloroethane | 4 | 0 | 0 | ||
| Chloroform | 4 | 0 | 0 | ||
| Benzene | 4 | 0 | 0 | ||
| Acenaphthene | 4 | 0 | 0 | ||
| Anthracene | 4 | 0 | 0 | ||
| Chlorobenzene | 4 | 0 | 0 | ||
| Chloroethane, total weight | 4 | 0 | 0 | ||
| Diethyl phthalate | 4 | 0 | 0 | ||
| Dimethyl phthalate | 4 | 0 | 0 | ||
| Fluoranthene | 4 | 0 | 0 | ||
| Fluorene | 4 | 0 | 0 | ||
| Hexachloroethane | 4 | 0 | 0 | ||
| Methyl chloride [Chloromethane] | 4 | 0 | 0 | ||
| Nitrobenzene | 4 | 0 | 0 | ||
| Phenanthrene | 4 | 0 | 0 | ||
| Pyrene | 4 | 0 | 0 | ||
| 1,1-Dichloroethane | 4 | 0 | 0 | ||
| 1,1-Dichloroethylene | 4 | 0 | 0 | ||
| 1,1,1-Trichloroethane | 4 | 0 | 0 | ||
| 1,1,2-Trichloroethane | 4 | 0 | 0 | ||
| 1,2-Dichlorobenzene | 4 | 0 | 0 | ||
| trans-1,2-Dichloroethylene | 4 | 0 | 0 | ||
| 1,2,4-Trichlorobenzene | 4 | 0 | 0 | ||
| 1,3-Dichlorobenzene | 4 | 0 | 0 | ||
| 1,4-Dichlorobenzene | 4 | 0 | 0 | ||
| 2-Nitrophenol | 4 | 0 | 0 | ||
| 4-Nitrophenol | 4 | 0 | 0 | ||
| 4,6-Dinitro-o-cresol | 4 | 0 | 0 | ||
| Naphthalene | 4 | 0 | 0 | ||
| Ethylbenzene | 4 | 0 | 0 | ||
| Di[2-ethylhexyl] phthalate [DEHP] | 4 | 0 | 0 | ||
| Vinyl chloride | 4 | 0 | 0 | ||
| Hexachlorobenzene | 4 | 0 | 0 | ||
| Hexachlorobutadiene | 4 | 0 | 0 | ||
| 1,3-Dichloropropylene | 4 | 0 | 0 | ||
| 1,2-Dichloropropene | 4 | 0 | 0 | ||
| BOD, 5-day, 20 deg. C | 1 | 0 | 0 | ||
| Oil petroleum, total recoverable | 1 | 0 | 0 | ||
| Acetone | 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
- 8Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| October 1, 2025 | Management Practice Violations - Failure to Maintain Records | ST6 |
| October 1, 2025 | Monitoring Violations - Invalid/Unrepresentative Sample | ST6 |
| March 13, 2025 | Reporting Violations - Late Submittal of DMRs | ST6 |
| March 13, 2025 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| March 13, 2025 | Permit Violations - Violation Specified in Comment | ST6 |
| March 13, 2025 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| March 13, 2025 | Management Practice Violations - Failure to Maintain Records | ST6 |
| June 12, 2024 | Monitoring Violations - Invalid/Unrepresentative Sample | 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 CTP000073 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.