Clean Water Act discharge permit · NPDES CT0030473
PLAINFIELD RENEWABLE ENERGY, LLC, Plainfield, CT: NPDES CT0030473 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 25Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
PLAINFIELD RENEWABLE ENERGY, LLC, held by LEIDOS RENEWABLE ENERGY, LLC, holds NPDES permit CT0030473, which discharges to Quinebaug River. EPA’s file records it issued August 30, 2013 and expiring August 31, 2018.
PLAINFIELD RENEWABLE ENERGY, LLC, Plainfield, Connecticut: Individual permit CT0030473, held by LEIDOS RENEWABLE ENERGY, LLC; Administratively continued (past its expiration date and still in force until reissued); issued August 30, 2013, term to August 31, 2018, by CT DEP; discharges to Quinebaug River; Biomass Electric Power Generation.
- Solids, total suspended: 3 limits, 28 violations of any kind, 23 effluent exceedances, latest April 30, 2026, largest 633% over the limit.
- Lead, total [as Pb]: 3 limits, 21 violations of any kind, 15 effluent exceedances, latest October 31, 2018, largest 216% over the limit.
- Aluminum, total [as Al]: 3 limits, 14 violations of any kind, 4 effluent exceedances, latest November 30, 2014, largest 46% over the limit.
- Copper, total [as Cu]: 3 limits, 10 violations of any kind, 3 effluent exceedances, latest October 31, 2014, largest 4,163% over the limit.
- pH, maximum: 1 limit, 3 violations of any kind, 2 effluent exceedances, latest January 31, 2016.
- Zinc, total [as Zn]: 3 limits, 9 violations of any kind, 1 effluent exceedance, latest October 31, 2014, largest 62% over the limit.
- Temperature, water deg. fahrenheit: 2 limits, 5 violations of any kind, 1 effluent exceedance, latest December 31, 2015, largest 12% over the limit.
- pH: 2 limits, 42 violations of any kind, 0 effluent exceedances.
- Iron, total [as Fe]: 3 limits, 10 violations of any kind, 0 effluent exceedances.
- Chlorine, total residual: 2 limits, 8 violations of any kind, 0 effluent exceedances.
- Phosphorus, total [as P]: 3 limits, 7 violations of any kind, 0 effluent exceedances.
- Turbidity: 2 limits, 6 violations of any kind, 0 effluent exceedances.
- Boron, total [as B]: 2 limits, 6 violations of any kind, 0 effluent exceedances.
- Flow rate: 2 limits, 5 violations of any kind, 0 effluent exceedances.
- Nitrogen, nitrite total [as N]: 1 limit, 5 violations of any kind, 0 effluent exceedances.
- Nitrogen, nitrate total [as N]: 1 limit, 5 violations of any kind, 0 effluent exceedances.
- Flow, maximum during 24 hr period: 2 limits, 4 violations of any kind, 0 effluent exceedances.
- Nitrogen, Ammonia Total: 2 limits, 4 violations of any kind, 0 effluent exceedances.
- NOAEL Static 48Hr Acute D. pulex: 2 limits, 3 violations of any kind, 0 effluent exceedances.
- NOAEL Static 48Hr Acute Pimephales promelas: 2 limits, 3 violations of any kind, 0 effluent exceedances.
- Temp. diff. between intake and discharge: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- pH, minimum: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Flow: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Nitrogen, ammonia total [as N]: 2 limits, 1 violation of any kind, 0 effluent exceedances.
- Flow rate, instantaneous: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- August 20, 2025: Monitoring Violations - Improper Analysis or Lab Error (ST6).
- August 20, 2025: Monitoring Violations - Invalid/Unrepresentative Sample (ST6).
- August 20, 2025: Management Practice Violations - Failure to Maintain Records (ST6).
- August 20, 2025: Monitoring Violations - Failure to Monitor for Toxicity Requirements (ST6).
- August 20, 2025: Reporting Violations - Improper/ Incorrect Reporting (ST6).
- June 15, 2023: Reporting Violations - Improper/ Incorrect Reporting (ST6).
- June 15, 2023: Management Practice Violations - Best Management Practice Deficiencies (ST6).
- June 15, 2023: Monitoring Violations - Improper Analysis or Lab Error (ST6).
PLAINFIELD RENEWABLE ENERGY, LLC among its neighbors
EPA’s permit file holds 5 discharge permits in the Mill Brook subwatershed (HUC 011000010702), CT0030473 among them. Its county holds 43, 5 of them major permits; CT0030473 is a minor permit.
Other permits in the Mill Brook subwatershed (HUC 011000010702)
- AMAZON.COM SERVICES LLC - DCY2, Plainfield: CTR050155, minor permit, permit term to September 30, 2030
- I-395 SOUTHBOUND SERVICE PLAZA IN PLAINFIELD, Plainfield: CTGSN2247, minor permit, permit term to September 30, 2020
- PLAINFIELD VILLAGE STP, Plainfield: CT0100439, minor permit, discharging to MILL BROOK-QUINEBAUG RIVER, permit term to August 31, 2017
- PLAINFIELD WPCF, Plainfield: CTL100447, minor permit, permit term to December 31, 2025
Identity
| Facility as filed | PLAINFIELD RENEWABLE ENERGY, LLC |
|---|---|
| Permittee as filed | LEIDOS RENEWABLE ENERGY, LLC |
| NPDES ID | CT0030473 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | August 30, 2013 |
| Expiration date | August 31, 2018 |
| Issuing agency | CT DEP |
| Address | Plainfield, CT 06374 |
| Receiving water | Quinebaug River |
| Subwatershed | Mill Brook (HUC 011000010702) |
| NAICS | 221117 – Biomass Electric Power Generation |
| SIC | 4911 – Electric Services |
Effluent limits and exceedances
- 25Pollutants on file
- 25Under a numeric limit
- 25With a violation of any kind
- 7With 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 | 3 | 28 | 23 | April 30, 2026 | 633% over the limit |
| Lead, total [as Pb] | 3 | 21 | 15 | October 31, 2018 | 216% over the limit |
| Aluminum, total [as Al] | 3 | 14 | 4 | November 30, 2014 | 46% over the limit |
| Copper, total [as Cu] | 3 | 10 | 3 | October 31, 2014 | 4,163% over the limit |
| pH, maximum | 1 | 3 | 2 | January 31, 2016 | |
| Zinc, total [as Zn] | 3 | 9 | 1 | October 31, 2014 | 62% over the limit |
| Temperature, water deg. fahrenheit | 2 | 5 | 1 | December 31, 2015 | 12% over the limit |
| pH | 2 | 42 | 0 | ||
| Iron, total [as Fe] | 3 | 10 | 0 | ||
| Chlorine, total residual | 2 | 8 | 0 | ||
| Phosphorus, total [as P] | 3 | 7 | 0 | ||
| Turbidity | 2 | 6 | 0 | ||
| Boron, total [as B] | 2 | 6 | 0 | ||
| Flow rate | 2 | 5 | 0 | ||
| Nitrogen, nitrite total [as N] | 1 | 5 | 0 | ||
| Nitrogen, nitrate total [as N] | 1 | 5 | 0 | ||
| Flow, maximum during 24 hr period | 2 | 4 | 0 | ||
| Nitrogen, Ammonia Total | 2 | 4 | 0 | ||
| NOAEL Static 48Hr Acute D. pulex | 2 | 3 | 0 | ||
| NOAEL Static 48Hr Acute Pimephales promelas | 2 | 3 | 0 | ||
| Temp. diff. between intake and discharge | 1 | 2 | 0 | ||
| pH, minimum | 1 | 2 | 0 | ||
| Flow | 1 | 2 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 1 | 0 | ||
| Flow rate, instantaneous | 1 | 1 | 0 |
Inspections, violations and enforcement
- 8Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| August 20, 2025 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
| August 20, 2025 | Monitoring Violations - Invalid/Unrepresentative Sample | ST6 |
| August 20, 2025 | Management Practice Violations - Failure to Maintain Records | ST6 |
| August 20, 2025 | Monitoring Violations - Failure to Monitor for Toxicity Requirements | ST6 |
| August 20, 2025 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| June 15, 2023 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| June 15, 2023 | Management Practice Violations - Best Management Practice Deficiencies | ST6 |
| June 15, 2023 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
Inspections
EPA’s inspection file holds no inspection for NPDES CT0030473.
Formal enforcement and penalties
0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
Informal enforcement
EPA’s informal enforcement file holds no action for NPDES CT0030473.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.