Clean Water Act discharge permit · NPDES MAR10064Y

SWANSEA, ROUTE 6, INTERSECTION IMPROVEMENTS, Swansea, MA: NPDES MAR10064Y 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, ROUTE 6, INTERSECTION IMPROVEMENTS, held by Massachusetts Department of Transportation - District 5, holds NPDES permit MAR10064Y. EPA’s file records it issued January 29, 2026 and expiring February 16, 2027. 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 SWANSEA, ROUTE 6, INTERSECTION IMPROVEMENTS: 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 MAR10064Y.

Identity

Facility as filed	SWANSEA, ROUTE 6, INTERSECTION IMPROVEMENTS
Permittee as filed	Massachusetts Department of Transportation - District 5
NPDES ID	MAR10064Y
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	January 29, 2026
Expiration date	February 16, 2027
Issuing agency	U.S. EPA
Address	Swansea, MA 02777
Subwatershed	Mount Hope Bay (HUC 010900040905)

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

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 MAR10064Y.

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 MAR10064Y.

Inspections

EPA’s inspection file holds no inspection for NPDES MAR10064Y.

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 MAR10064Y.

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 MAR10064Y there.

SWANSEA, ROUTE 6, INTERSECTION IMPROVEMENTS, Swansea, Massachusetts: Coverage under a general permit MAR10064Y, held by Massachusetts Department of Transportation - District 5; Construction stormwater; Effective; issued January 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; 2,844 were issued before MAR10064Y. Massachusetts Department of Transportation - District 5 holds 33 permits in Massachusetts.

Other permits held by Massachusetts Department of Transportation - District 5

CORRIDOR IMPROVEMENTS ON ROUTE 79 AND DAVOL STREET, Fall River: MAR1004KS, issued April 12, 2023
REHOBOTH- INTERSECTION IMPROVEMENTS AT WINTHROP STREET AND ANAWAN STREET, Rehoboth: MAR1004MP, issued May 22, 2023
NORTON MANSFIELD RAIL TRAIL EXTENSION, Norton: MAR1004PH, issued July 6, 2023
ROADWAY RECONSTRUCTION ON ROUTE 44 (DEAN STREET) TAUNTON, MASSACHUSETTS, Taunton: MAR1004R2, issued August 10, 2023
WELLFLEET, MA - ROUTE 6/MAIN STREET INTERSECTION AND CORRIDOR IMPROVEMENTS, Wellfleet: MAR100510, issued February 12, 2024
LAWRENCE-LYNCH: WELLFLEET, MA -PAVEMENT PRESERVATION AND RELATED WORK ON ROUTE 6, Wellfleet: MAR100521, issued February 27, 2024
INTERSECTION IMPROVEMENTS AND RELATED WORK ROUTE 1 AND ROUTE 1A AT ROUTE 123, Attleboro: MAR100547, issued March 27, 2024
ROUTE 1 RESURFACING AND RELATED WORK IN FOXBOROUGH, Foxborough: MAR10055K, issued April 17, 2024
INTERSECTION IMPROVEMENTS AT ROUTE 1A, Norwood: MAR10056G, issued April 26, 2024
INTERSECTION IMPROVEMENTS AT CENTRAL ST IN STOUGHTON, Stoughton: MAR100571, issued May 9, 2024

Coverages issued nearest MAR10064Y

January 27, 2026: PROPOSED WAREHOUSE BUILDING, Westfield, MAR10064Z, held by One Development and Construction
January 27, 2026: WINDWARD CROSSING, Rowley, MAR10065G, held by Windover
January 28, 2026: ROUTE 80 CEMETERY PHASE I, Plymouth, MAR10065J, held by Green Acres Landscape & Construction
January 28, 2026: 200 TRAPELO RD, PHASE 2, IMPROVEMENTS, Waltham, MAR10065K, held by Green Acres Landscape & Construction
January 29, 2026: 0 WALES AVENUE, AVON, Avon, MAR10063A, held by T.L. Edwards, Inc.
January 29, 2026: CLOSURE OF THE OLD TOWN DUMP, Charlton, MAR10065L, held by A.F. Amorello & Sons, Inc.
January 29, 2026: LINE 323 ASSET CONDITION AND REFURBISHMENT PROJECT, Millbury, MAR10065M, held by RHL Companies, Inc.
January 30, 2026: MASSPORT LOGAN AIRPORT WEST OUTFALL AREA ENABLING WORKS PROJECT, Boston, MAR10065N, held by Suffolk Construction
February 3, 2026: BETH ISRAEL DEACONESS HOSPITAL MILTON - ED AND PARKING EXPANSION, Milton, MAR100657, held by Consigli Construction Co., Inc.
February 3, 2026: 609065-132399 HOLYOKE CABOT STREET, Springfield, MAR10065P, held by MassDOT Highway Division

SWANSEA, ROUTE 6, INTERSECTION IMPROVEMENTS among its neighbors

EPA’s permit file holds 34 discharge permits in the Mount Hope Bay subwatershed (HUC 010900040905), MAR10064Y 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

Nearby on the register

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

The SWANSEA, ROUTE 6, INTERSECTION IMPROVEMENTS permit is one of 15 storm water construction permits in Swansea, Massachusetts, and 0.0% of those 15 have a violation on file. Of all 15 storm water construction permits in Swansea, this one included, 80.0% carry an earlier issue date than this permit. The permit also sits among 29 NPDES permits in the Mount Hope Bay subwatershed, this one included, and it records zero pollutants under a numeric limit and zero pollutants with an effluent exceedance.