Clean Water Act discharge permit · NPDES MAR1006C9

SWANSEA 2 SOLAR DEVELOPMENT - OLD WARREN ROAD SWANSEA, MA, Swansea, MA: NPDES MAR1006C9 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
0Pollutants under a numeric limit
0Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

SWANSEA 2 SOLAR DEVELOPMENT - OLD WARREN ROAD SWANSEA, MA, held by Northern Sun Energy, holds NPDES permit MAR1006C9. EPA’s file records it issued May 29, 2026 and expiring February 16, 2027.

SWANSEA 2 SOLAR DEVELOPMENT - OLD WARREN ROAD SWANSEA, MA, Swansea, Massachusetts: Coverage under a general permit MAR1006C9, held by Northern Sun Energy; Construction stormwater; Effective; issued May 29, 2026, term to February 16, 2027, by U.S. EPA.

Massachusetts holds 3,320 Construction stormwater coverages of this permit type in EPA’s file; 3,090 were issued before MAR1006C9. Northern Sun Energy holds 2 permits in Massachusetts.

Other permits held by Northern Sun Energy

50 OLD PROVIDENCE ROAD, Swansea: MAR1005YS, issued September 30, 2025

Coverages issued nearest MAR1006C9

May 28, 2026: EDGARTOWN FIRE STATION, Edgartown, MAR1006BZ, held by Dellbrook Construction LLC
May 28, 2026: HITTRAX, Northborough, MAR1006CI, held by McCarty Associates, Inc.
May 28, 2026: SWAMPSCOTT RESIDENTIAL, Swampscott, MAR1006CJ, held by Callahan Construction Managers
May 29, 2026: NORTH END COMMUNITY CENTER, Boston, MAR100686, held by Turner Construction Company
May 29, 2026: GRAVEL PARKING LOT, Sandwich, MAR1006BY, held by Lawrence Lynch Corporation
May 29, 2026: PHASE 3A SEWER EXTENSION PROJECT, QUEEN ANNE RD, HARWICH, MA, Harwich, MAR1006CL, held by Dig-It Construction LLC
May 29, 2026: 608778, SOUTHBRIDGE, INTERSECTION IMPROVEMENTS, CENTRAL,FOSTER &HAMILTON STREETS, Southbridge, MAR1006CM, held by MassDOT
May 29, 2026: NORTH ANDOVER MIDDLE SCHOOL RECREATION COMPLEX PHASE 1, North Andover, MAR1006CO, held by Heimlich Landscaping & Construction Corp.
June 2, 2026: 140 TIHONET PV+ES, Wareham, MAR1006CP, held by New Leaf Energy
June 2, 2026: UNIVERSITY STATION PROPOSED HOTEL, Westwood, MAR1006CQ, held by Capitol Services

SWANSEA 2 SOLAR DEVELOPMENT - OLD WARREN ROAD SWANSEA, MA among its neighbors

EPA’s permit file holds 34 discharge permits in the Mount Hope Bay subwatershed (HUC 010900040905), MAR1006C9 among them.

Other permits in the Mount Hope Bay subwatershed (HUC 010900040905)

109 HOWE STREET, Fall River: MAR100522, minor permit, permit term to February 16, 2027
BAY STATE VETERINARY SPECIALISTS BUILDING EXPANSION, Swansea: MAR1004UA, minor permit, permit term to February 16, 2027
BORDEN AND REMINGTON CORPORATION, Fall River: MAR053675, minor permit, permit term to June 3, 2020
BRAYTON POINT LLC, Somerset: MA0003654, major permit, discharging to MOUNT HOPE BAY, permit term to December 5, 2008
BREWERS SAKONNET MARINA, Portsmouth: RIR50Q014, minor permit, discharging to SAKONNET RIVER, permit term to May 2, 2024
BRISTOL COUNTY WATER AUTHORITY, Warren: RIO000391, not classed
BRISTOL COUNTY WATER AUTHORITY, Warren: RIO000428, not classed, discharging to PROVIDENCE RIVER, permit term to June 25, 2019
CWSRF 16705 C. NAUGHTON CORP: SWANSEA, MA - RT 6 CORRIDOR SEWER, Swansea: MAR10064U, minor permit, permit term to February 16, 2027
DEROSA WELDING INC., Fall River: MANOE3909, minor permit, permit term to September 27, 2021
DURO PLANT II, Fall River: MAR05B947, minor permit, permit term to October 29, 2005

What the register holds for SWANSEA 2 SOLAR DEVELOPMENT - OLD WARREN ROAD SWANSEA, MA: its NPDES ID, its permit type and status, its dates, its address in Swansea, Massachusetts. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MAR1006C9.

Identity

Facility as filed	SWANSEA 2 SOLAR DEVELOPMENT - OLD WARREN ROAD SWANSEA, MA
Permittee as filed	Northern Sun Energy
NPDES ID	MAR1006C9
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Program	Construction stormwater
Issued	May 29, 2026
Expiration date	February 16, 2027
Issuing agency	U.S. EPA
Address	Swansea, MA 02777
Subwatershed	Mount Hope Bay (HUC 010900040905)

Effluent limits and exceedances

0Pollutants on file
0Under a numeric limit
0With a violation of any kind
0With an effluent exceedance

EPA’s limits and effluent violation files hold no pollutant row for NPDES MAR1006C9.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES MAR1006C9.

Inspections

EPA’s inspection file holds no inspection for NPDES MAR1006C9.

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 MAR1006C9.

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Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

The SWANSEA 2 SOLAR DEVELOPMENT - OLD WARREN ROAD SWANSEA, MA permit is one of 15 storm water construction permits in Swansea on EPA's NPDES register, and 93.3% of those permits carry an earlier issue date than this one. The permit sits among 29 NPDES permits in the Mount Hope Bay subwatershed, and 0.0% of Swansea's 15 storm water construction permits have a violation on file.