Clean Water Act discharge permit · NPDES CTP000553
ATLANTIC INERTIAL SYSTEMS, Cheshire, CT: NPDES CTP000553 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 17Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
ATLANTIC INERTIAL SYSTEMS holds NPDES permit CTP000553, which discharges to Quinnipiac River. EPA’s file records it issued October 24, 2006 and expiring October 31, 2011. 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 | ATLANTIC INERTIAL SYSTEMS |
|---|---|
| Permittee as filed | ATLANTIC INERTIAL SYSTEMS |
| NPDES ID | CTP000553 |
| 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 24, 2006 |
| Expiration date | October 31, 2011 |
| Issuing agency | CTDEP |
| Address | Cheshire, CT 06410 |
| Receiving water | QUINNIPIAC RIVER |
| Other EPA IDs (FRS) | RCRA handler CTD980916597; ICIS-AIR source CT0000000900909916 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 17Pollutants on file
- 17Under a numeric limit
- 5With a violation of any kind
- 5With 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, maximum during 24 hr period | 3 | 4 | 4 | January 31, 2005 | 13% over the limit |
| Nickel, total [as Ni] | 2 | 3 | 3 | August 31, 2016 | 83% over the limit |
| Gold, total [as Au] | 2 | 3 | 3 | August 31, 2003 | 660% over the limit |
| Zinc, total [as Zn] | 2 | 2 | 2 | June 30, 2006 | 43% over the limit |
| Copper, total [as Cu] | 2 | 1 | 1 | August 31, 2003 | 53% over the limit |
| pH | 2 | 0 | 0 | ||
| Cyanide, total [as CN] | 2 | 0 | 0 | ||
| Cadmium, total [as Cd] | 2 | 0 | 0 | ||
| Chromium, total [as Cr] | 2 | 0 | 0 | ||
| Lead, total [as Pb] | 2 | 0 | 0 | ||
| Silver, total [as Ag] | 2 | 0 | 0 | ||
| Tin, total [as Sn] | 2 | 0 | 0 | ||
| Flow rate | 1 | 0 | 0 | ||
| Cyanide, free [amenable to chlorination] | 1 | 0 | 0 | ||
| Chromium, hexavalent [as Cr] | 1 | 0 | 0 | ||
| Flow | 1 | 0 | 0 | ||
| Organics, total toxic [TTO] | 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 CTP000553.
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, CTP000553.
Start the watch
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- One watershed — $2,990/year
- One state — $4,990/year
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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 CTP000553 there.
Nearby on the register
- Discharge permits in Cheshire
- Every permit record in Cheshire, 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.