Clean Water Act discharge permit · NPDES CTP002253
INTERSTATE CONSTRUCTION SERVIES, LLC, Uncasville, CT: NPDES CTP002253 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
INTERSTATE CONSTRUCTION SERVIES, LLC, held by AES THAMES, INC., holds NPDES permit CTP002253, which discharges to Quinebaug River. EPA’s file records it issued February 1, 2003 and expiring February 3, 2008. 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 | INTERSTATE CONSTRUCTION SERVIES, LLC |
|---|---|
| Permittee as filed | AES THAMES, INC. |
| NPDES ID | CTP002253 |
| 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 | February 1, 2003 |
| Expiration date | February 3, 2008 |
| Issuing agency | CT DEP |
| Address | Uncasville, CT 06382 |
| Receiving water | QUINEBAUG RIVER |
| Receiving water impaired | 303(D) Listed |
| Other EPA IDs (FRS) | RCRA handler CTD983901778 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 12Pollutants on file
- 9Under a numeric limit
- 10With a violation of any kind
- 2With 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 | 4 | 44 | 2 | April 30, 2008 | 178% over the limit |
| Oil & Grease | 2 | 1 | 1 | January 31, 2009 | 3% over the limit |
| pH | 8 | 84 | 0 | ||
| Flow | 4 | 42 | 0 | ||
| Flow, maximum during 24 hr period | 1 | 42 | 0 | ||
| Oil petroleum, total recoverable | 0 | 28 | 0 | ||
| Phosphorus, total [as P] | 1 | 14 | 0 | ||
| Aluminum, total [as Al] | 1 | 14 | 0 | ||
| pH, maximum | 0 | 14 | 0 | ||
| pH, minimum | 0 | 14 | 0 | ||
| Copper, total [as Cu] | 1 | 0 | 0 | ||
| Iron, total [as Fe] | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES CTP002253.
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.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, CTP002253.
Start the watch
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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 CTP002253 there.
Nearby on the register
- Discharge permits in Uncasville
- Every permit record in Uncasville, A to Z
- Discharge permits in Connecticut
- Every permit record in Connecticut, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.