Clean Water Act discharge permit · NPDES MAR100500

CONLEY TERMINAL CONTAINER STORAGE PHASE I M549-C1 (BULKHEAD REPAIR), South Boston, MA: NPDES MAR100500 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

CONLEY TERMINAL CONTAINER STORAGE PHASE I M549-C1 (BULKHEAD REPAIR), held by ACK Marine & General Contracting, holds NPDES permit MAR100500. EPA’s file records it issued January 23, 2024 and expiring February 16, 2027.

CONLEY TERMINAL CONTAINER STORAGE PHASE I M549-C1 (BULKHEAD REPAIR), South Boston, Massachusetts: Coverage under a general permit MAR100500, held by ACK Marine & General Contracting; Construction stormwater; Effective; issued January 23, 2024, term to February 16, 2027, by U.S. EPA.

Massachusetts holds 3,320 Construction stormwater coverages of this permit type in EPA’s file; 1,627 were issued before MAR100500.

Coverages issued nearest MAR100500

January 22, 2024: FAIRHAVEN WATER POLLUTION CONTROL FACILITY UPGRADES, Fairhaven, MAR1004ZT, held by Methuen Construction, Inc.
January 22, 2024: 607693 - 121541 CHICOPEE- LUDLOW- WILBRAHAM- RESURFACING & RELATED WORK ON I-90, Chicopee - Wilbraham, MAR1004ZU, held by MassDOT Highway Division
January 22, 2024: 608560 - 121837 SPRINGFIELD ST. JAMES AVE IMPROVEMENTS, Springfield, MAR1004ZX, held by MassDOT Highway Division
January 22, 2024: ELMWOOD FARMS, Hopkinton, MAR1004ZY, held by Toll Bros., Inc.
January 23, 2024: CONLEY TERMINAL CONTAINER STORAGE PHASE I M549-C1 (BULKHEAD REPAIR), South Boston, MAR1004ZZ, held by Massachusetts Port Authority
January 23, 2024: BIG Y SUPERMARKET, Uxbridge, MAR100501, held by Big Y Foods, Inc.
January 23, 2024: THE GARDNER SCHOOL - DEDHAM, Dedham, MAR100502, held by The Gardner School
January 24, 2024: MERRICK AT THE SQUARE, Worcester, MAR100504, held by Saloomey Construction, Inc.
January 24, 2024: THE GARDNER SCHOOL- DEDHAM, Dedham, MAR100505, held by Fortunato Construction Group, Inc
January 24, 2024: COMMERCIAL REDEVELOPMENT SITE, Lakeville, MAR100506, held by T. Sikorski Realty, LLC

CONLEY TERMINAL CONTAINER STORAGE PHASE I M549-C1 (BULKHEAD REPAIR) among its neighbors

EPA’s permit file holds 384 discharge permits in the Charles River-Frontal Boston Harbor subwatershed (HUC 010900010704), MAR100500 among them.

Other permits in the Charles River-Frontal Boston Harbor subwatershed (HUC 010900010704)

100 NORTHERN AVENUE, Boston: MAG912127, minor permit, permit term to August 1, 2027
101 HAMPDEN STREET, Boston: MAR1003TB, minor permit, permit term to February 16, 2027
104 MAIN STREET, Watertown: MAG912191, minor permit, permit term to August 1, 2027
104 MAIN STREET, Watertown: MAR1005BZ, minor permit, permit term to February 16, 2027
121 - 139 FIRST STREET, Cambridge: MAG070443, minor permit, discharging to CHARLES RIVER, permit term to May 19, 2020
127 AMORY ST REDEVELOPMENT PROJECT, Boston: MAR1005O4, minor permit, permit term to February 16, 2027
127 AMORY STREET, Boston: MAR1005RC, minor permit, permit term to February 16, 2027
1270 COMMONWEALTH AVE, Allston: MAR1005P0, minor permit, permit term to February 16, 2027
136 SHAWMUT AVENUE, Boston: MAG070409, minor permit, discharging to FORT POINT CHANNEL, permit term to May 19, 2020
14 WEST BROADWAY, Boston: MAG070411, minor permit, discharging to fFORT POINT CHANNEL, permit term to May 19, 2020

What the register holds for CONLEY TERMINAL CONTAINER STORAGE PHASE I M549-C1 (BULKHEAD REPAIR): its NPDES ID, its permit type and status, its dates, its address in South Boston, Massachusetts. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MAR100500.

Identity

Facility as filed	CONLEY TERMINAL CONTAINER STORAGE PHASE I M549-C1 (BULKHEAD REPAIR)
Permittee as filed	ACK Marine & General Contracting
NPDES ID	MAR100500
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 23, 2024
Expiration date	February 16, 2027
Issuing agency	U.S. EPA
Address	South Boston, MA 02127
Receiving water impaired	303(D) Listed
Subwatershed	Charles River-Frontal Boston Harbor (HUC 010900010704)

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 MAR100500.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES MAR100500.

Inspections

EPA’s inspection file holds no inspection for NPDES MAR100500.

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 MAR100500.

Watch this permit

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Nearby on the register

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

The permit for CONLEY TERMINAL CONTAINER STORAGE PHASE I M549-C1 (BULKHEAD REPAIR), held by ACK Marine & General Contracting, is one of 5 storm water construction permits on EPA's NPDES register in South Boston, and it sits among 384 NPDES permits in the Charles River-Frontal Boston Harbor subwatershed (HUC 010900010704), this one included. Of those 5 South Boston storm water construction permits, 0.0% have a violation on file, and this permit records 0 pollutants with a numeric limit and 0 with an effluent exceedance.