Clean Water Act discharge permit · NPDES NY0271471
CAITHNESS LONG ISLAND ENERGY CTR, Yaphank, NY: NPDES NY0271471 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 12Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
CAITHNESS LONG ISLAND ENERGY CTR, held by CAITHNESS LONG ISLAND, LLC, holds NPDES permit NY0271471, which discharges to Groundwater. EPA’s file records it issued December 23, 2010 and expiring July 31, 2021. 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 | CAITHNESS LONG ISLAND ENERGY CTR |
|---|---|
| Permittee as filed | CAITHNESS LONG ISLAND, LLC |
| NPDES ID | NY0271471 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | State-issued individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | December 23, 2010 |
| Expiration date | July 31, 2021 |
| Issuing agency | NYSDEC |
| Address | Yaphank, NY 11980 |
| Receiving water | GROUNDWATER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Swan River-Great South Bay (HUC 020302020304) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 12Pollutants on file
- 12Under 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 |
|---|---|---|---|---|---|
| pH | 36 | 22 | 22 | March 31, 2026 | |
| Benzene | 5 | 6 | 6 | July 31, 2011 | 257% over the limit |
| p-Xylene | 5 | 4 | 4 | August 31, 2018 | 76% over the limit |
| .meta.-Xylene | 5 | 4 | 4 | August 31, 2018 | 76% over the limit |
| Propylene glycol, total | 2 | 2 | 1 | May 31, 2010 | 29% over the limit |
| Flow rate | 33 | 0 | 0 | ||
| Oil & Grease | 13 | 0 | 0 | ||
| Toluene | 5 | 0 | 0 | ||
| Ethylbenzene | 5 | 0 | 0 | ||
| o-Xylene | 5 | 0 | 0 | ||
| Ammonia & ammonium- total | 4 | 0 | 0 | ||
| Hydrazine | 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 NY0271471.
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
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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 NY0271471 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.