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Clean Water Act discharge permit · NPDES ME0000361

CARIBOU GENERATING STATION, Caribou, ME: NPDES ME0000361 discharge permit, effluent exceedances, inspections, penalties

CARIBOU GENERATING STATION, held by ALGONQUIN NORTHERN MAINE GEN CO., holds NPDES permit ME0000361, which discharges to Aroostook River. EPA’s file records it issued October 1, 2009 and expiring September 30, 2014.

CARIBOU GENERATING STATION, Caribou, Maine: Individual permit ME0000361, held by ALGONQUIN NORTHERN MAINE GEN CO.; Administratively continued (past its expiration date and still in force until reissued); issued October 1, 2009, term to September 30, 2014; discharges to Aroostook River.

  • Oil & Grease: 6 limits, 36 violations of any kind, 0 effluent exceedances.
  • Temperature, water deg. fahrenheit: 5 limits, 32 violations of any kind, 0 effluent exceedances.
  • Flow, in conduit or thru treatment plant: 5 limits, 31 violations of any kind, 0 effluent exceedances.
  • Temp. diff. between samp. & upstrm deg. F: 9 limits, 26 violations of any kind, 0 effluent exceedances.
  • Solids, total suspended: 4 limits, 24 violations of any kind, 0 effluent exceedances.

Other permits held by ALGONQUIN NORTHERN MAINE GEN CO.

CARIBOU GENERATING STATION among its neighbors

EPA’s permit file holds 8 discharge permits in the Pettingill Brook-Aroostook River subwatershed (HUC 010100041009), ME0000361 among them. Its county holds 55, 7 of them major permits; ME0000361 is a minor permit.

Other permits in the Pettingill Brook-Aroostook River subwatershed (HUC 010100041009)

Identity

Facility as filedCARIBOU GENERATING STATION
Permittee as filedALGONQUIN NORTHERN MAINE GEN CO.
NPDES IDME0000361
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedOctober 1, 2009
Expiration dateSeptember 30, 2014
AddressCaribou, ME 04736
Receiving waterAroostook River
Receiving water impaired303(D) Listed
SubwatershedPettingill Brook-Aroostook River (HUC 010100041009)

Effluent limits and exceedances

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 measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Oil & Grease6360
Temperature, water deg. fahrenheit5320
Flow, in conduit or thru treatment plant5310
Temp. diff. between samp. & upstrm deg. F9260
Solids, total suspended4240

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES ME0000361.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES ME0000361.

Inspections

EPA’s inspection file holds no inspection for NPDES ME0000361.

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 ME0000361.

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Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

What this page shows

This public-records page covers Clean Water Act discharge permit NPDES ME0000361 for Caribou Generating Station in Caribou, ME, held by ALGONQUIN NORTHERN MAINE GEN CO., which discharges to the Aroostook River within subwatershed HUC 010100041009. The page lists the permit as administratively continued, with 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance.