Clean Water Act discharge permit · NPDES MAR1006BW

SUPERSTRUCTURE REPLACEMENT, MAFFA WAY AND MYSTIC AVENUE OVER MBTA/BMRR, Boston, MA: NPDES MAR1006BW 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

SUPERSTRUCTURE REPLACEMENT, MAFFA WAY AND MYSTIC AVENUE OVER MBTA/BMRR, held by Massachusetts Department of Transportation, holds NPDES permit MAR1006BW. EPA’s file records it issued May 18, 2026 and expiring February 16, 2027.

SUPERSTRUCTURE REPLACEMENT, MAFFA WAY AND MYSTIC AVENUE OVER MBTA/BMRR, Boston, Massachusetts: Coverage under a general permit MAR1006BW, held by Massachusetts Department of Transportation; Construction stormwater; Effective; issued May 18, 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; 3,070 were issued before MAR1006BW. Massachusetts Department of Transportation holds 62 permits in Massachusetts.

Other permits held by Massachusetts Department of Transportation

INTERSECTION IMPROVEMENTS ON BOSTON ROAD (RTE 4) AT CONCORD AND PARKER ROADS, Chelmsford: MAR10034D, issued February 24, 2021
I-95 RESURFACING AND RELATED WORK, PEABODY TO NEWBURYPORT, MA, Peabody: MAR10034U, issued March 8, 2021
EVERETT, MA - FERRY ST, SOUTH FERRY ST AND ELM ST, Everett: MAR1003NM, issued February 1, 2022
INTERSECTION RECONSTRUCTION ON ROUTE 108 AT ROUTE 110 (KENOZA AVE), Haverhill: MAR1003OK, issued January 10, 2022
WESTBOROUGH/HOPKINTON PROJECT #606632 FRUIT ST. OVER MBTA/CSX & SUDBURY RIVER, Westborough: MAR1003YW, issued May 30, 2022
STURBRIDGE, RESURFACING ALONG A SECTION OF I-90 PROJECT #609481, Sturbridge: MAR1003ZA, issued May 30, 2022
AUBURN PROJECT #607556 INTERCHANGE RAMPS, I-90 EXIT 10 OVER RT. 12, Auburn: MAR1003ZB, issued May 30, 2022
STOW, BRIDGE SUPERSTR. REPLAC, GLEASONDALE ROAD (RT. 62) OVER ASSABET RIVER, Stow: MAR1003ZG, issued May 31, 2022
DEDHAM STREET/I-95 INTERCHANGE RECONSTRUCTION INCLUDING REHABILITATION/REPLACEME, Canton/Norwood/Westwood: MAR1003ZI, issued May 31, 2022
RECONSTRUCTION AND RELATED WORK AT MAIN STREET (ROUTE 113) - DUNSTABLE, Dunstable: MAR1003ZL, issued May 31, 2022

Coverages issued nearest MAR1006BW

May 15, 2026: MASHPEE POLICE DEPARTMENT, Mashpee, MAR1006BS, held by GFM Enterprises, Inc.
May 15, 2026: MASSPORT TERMINAL E GARAGE, CURBSIDE , ROADWAYS, 36 LEE BURBANK HIGHWAY, REVERE,, Revere, MAR1006BT, held by Skanska USA Building Inc.
May 15, 2026: 65 FARM ROAD IN SHERBORN, Sherborn, MAR1006BU, held by Gary Lambert
May 15, 2026: P26-3636-C2A_C. NAUGHTON CORP: WESTON, MA - LJM GOLF COURSE, Weston, MAR1006BV, held by C. Naughton Corp.
May 18, 2026: MAPFRE CAMPUS COURTYARD, Webster, MAR1006BD, held by ZVI Construction, LLC
May 18, 2026: 610657-133625 EASTHAMPTON NORTHAMPTON MR TOM SUP, Northamtpon, MAR1006BX, held by MassDOT Highway Division
May 19, 2026: THAYER ACADEMY FIELD, Braintree, MAR1006C0, held by Field Turf
May 19, 2026: AUBURN FIRE RESCUE HEADQUARTERS, Auburn, MAR1006C1, held by A.F. Amorello & Sons, Inc.
May 19, 2026: U173/W123 ACR, Charlton, MAR1006C2, held by New England Power Company
May 19, 2026: FRANCIS ESTATES, Westport, MAR1006C3, held by Botelho Custom Homes, LLC.

SUPERSTRUCTURE REPLACEMENT, MAFFA WAY AND MYSTIC AVENUE OVER MBTA/BMRR among its neighbors

EPA’s permit file holds 157 discharge permits in the Mystic River-Frontal Boston Harbor subwatershed (HUC 010900010502), MAR1006BW among them.

Other permits in the Mystic River-Frontal Boston Harbor subwatershed (HUC 010900010502)

0 SOUTH FARM ROAD, Everett: MAG912155, minor permit, permit term to August 1, 2027
10 & 20 EXECUTIVE DRIVE, STONEHAM, Stoneham: MAR1005SA, minor permit, permit term to February 16, 2027
100, 125, 150 CAMBRIDGEPARK DRIVE, Cambridge: MAR1002G8, minor permit, permit term to February 15, 2022
101 SMITH PLACE, Cambridge: MAR10037T, minor permit, permit term to February 15, 2022
1165R MASS AVE RESIDENTIAL DEVELOPMENT, Arlington: MAR1003QJ, minor permit, permit term to February 15, 2022
128 SPRING STREET, Everett: MAR1005EI, minor permit, permit term to February 16, 2027
142 MYSTIC AVENUE MEDFORD MA, Medford: MAR1004RK, minor permit, permit term to February 16, 2027
212 BEACHAM STREET EVERETT, MA, Everett: MAR1004Y1, minor permit, permit term to February 16, 2027
299 BROADWAY, Somerville: MAR10063U, minor permit, permit term to February 16, 2027
35 GARVEY STREET, EVERETT MA 02149, Everett: MAR1003QR, minor permit, permit term to February 15, 2022

What the register holds for SUPERSTRUCTURE REPLACEMENT, MAFFA WAY AND MYSTIC AVENUE OVER MBTA/BMRR: its NPDES ID, its permit type and status, its dates, its address in Boston, Massachusetts. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MAR1006BW.

Identity

Facility as filed	SUPERSTRUCTURE REPLACEMENT, MAFFA WAY AND MYSTIC AVENUE OVER MBTA/BMRR
Permittee as filed	Massachusetts Department of Transportation
NPDES ID	MAR1006BW
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 18, 2026
Expiration date	February 16, 2027
Issuing agency	U.S. EPA
Address	Boston, MA 02129
Receiving water impaired	303(D) Listed
Subwatershed	Mystic River-Frontal Boston Harbor (HUC 010900010502)

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 MAR1006BW.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES MAR1006BW.

Inspections

EPA’s inspection file holds no inspection for NPDES MAR1006BW.

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 MAR1006BW.

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Nearby on the register

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

The SUPERSTRUCTURE REPLACEMENT, MAFFA WAY AND MYSTIC AVENUE OVER MBTA/BMRR storm water construction permit is one of 111 such permits in Boston, and the register records 0.0% of those 111 as carrying a violation on file. The permit sits within the Mystic River-Frontal Boston Harbor subwatershed, which holds 157 NPDES permits including this one. Of all 111 Boston storm water construction permits, 91.9% were issued before this permit's May 18, 2026 issue date.