Clean Water Act discharge permit · NPDES CTP000570
SPARTECH LLC, Stamford, CT: NPDES CTP000570 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
SPARTECH LLC, held by POLYONE DESIGNED STRUCTURES AND SOLUTIONS LLC, holds NPDES permit CTP000570, which discharges to Stamford Harbor. EPA’s file records it issued October 7, 2009 and expiring October 31, 2014. 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 | SPARTECH LLC |
|---|---|
| Permittee as filed | POLYONE DESIGNED STRUCTURES AND SOLUTIONS LLC |
| NPDES ID | CTP000570 |
| 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 | October 7, 2009 |
| Expiration date | October 31, 2014 |
| Issuing agency | CT DEP |
| Address | Stamford, CT 06902 |
| Receiving water | STAMFORD HARBOR |
| Receiving water impaired | 303(D) Listed |
| Other EPA IDs (FRS) | RCRA handler CTD001161827; ICIS-AIR source CT0000000900106041 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 14Pollutants on file
- 8Under a numeric limit
- 14With 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.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| pH | 2 | 55 | 41 | June 30, 2026 | |
| pH, minimum | 0 | 21 | 20 | December 31, 2020 | |
| Flow, maximum during 24 hr period | 1 | 19 | 12 | December 31, 2007 | 180% over the limit |
| Flow rate | 1 | 15 | 8 | July 31, 2025 | 24% over the limit |
| pH, maximum | 0 | 9 | 8 | June 30, 2026 | |
| Oil petroleum, total recoverable | 2 | 17 | 2 | July 31, 2010 | 380% over the limit |
| Flow | 1 | 11 | 1 | January 31, 2005 | 67% over the limit |
| Solids, total suspended | 1 | 6 | 1 | December 31, 2011 | 240% over the limit |
| BOD, 5-day, 20 deg. C | 1 | 6 | 0 | ||
| Methyl methacrylate | 1 | 5 | 0 | ||
| Zinc, total [as Zn] | 0 | 2 | 0 | ||
| Chromium, total [as Cr] | 0 | 1 | 0 | ||
| Copper, total [as Cu] | 0 | 1 | 0 | ||
| Organics, total toxic [TTO] | 0 | 1 | 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
- 6Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| May 29, 2025 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| May 29, 2025 | Permit Violations - Violation Specified in Comment | ST6 |
| July 11, 2024 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| July 11, 2024 | Management Practice Violations - Failure to Maintain Records | ST6 |
| September 27, 2023 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| September 27, 2023 | 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 CTP000570 there.
Nearby on the register
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- Every permit record in Connecticut, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.