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Clean Water Act discharge permit · NPDES ME0036552

MATTACEUNK HYDRO PROJECT - WELDON STATION, Mattawamkeag, ME: NPDES ME0036552 discharge permit, effluent exceedances, inspections, penalties

MATTACEUNK HYDRO PROJECT - WELDON STATION, held by GREAT LAKES HYDRO AMERICA, LLC, holds NPDES permit ME0036552, which discharges to Penobscot River. EPA’s file records it issued January 1, 2014 and expiring December 31, 2018. 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.

What the register holds for MATTACEUNK HYDRO PROJECT - WELDON STATION: its NPDES ID, its permit type and status, its dates, its address in Mattawamkeag, Maine, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES ME0036552.

Identity

Facility as filedMATTACEUNK HYDRO PROJECT - WELDON STATION
Permittee as filedGREAT LAKES HYDRO AMERICA, LLC
NPDES IDME0036552
Permit statusEffective
Permit typeIndividual permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedJanuary 1, 2014
Expiration dateDecember 31, 2018
AddressMattawamkeag, ME 04462
Receiving waterPenobscot River
SubwatershedPattagumpus Stream-Penobscot River (HUC 010200050104)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES ME0036552.

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

EPA’s single-event violation file, as loaded, holds no violation for NPDES ME0036552.

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.

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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 ME0036552 there.

Nearby on the register

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

What this page shows

The Mattaceunk Hydro Project - Weldon Station permit (NPDES ID ME0036552) is the only NPDES permit in the Pattagumpus Stream-Penobscot River subwatershed, and it is one of 22 individual permits in Penobscot County, where 68.2% of such permits carry a violation on file. It has no pollutants under a numeric limit and no pollutants with an effluent exceedance.