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Clean Water Act discharge permit · NPDES MAG912187

55 BROADWAY, CAMBRIDGE, MA - DEMOLITION, Cambridge, MA: NPDES MAG912187 discharge permit, effluent exceedances, inspections, penalties

55 BROADWAY, CAMBRIDGE, MA - DEMOLITION, held by John Moriarty & Associates, holds NPDES permit MAG912187. EPA’s file records it issued August 2, 2022 and expiring August 1, 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.

Identity

Facility as filed55 BROADWAY, CAMBRIDGE, MA - DEMOLITION
Permittee as filedJohn Moriarty & Associates
NPDES IDMAG912187
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedAugust 2, 2022
Expiration dateAugust 1, 2027
Issuing agencyEPA Region 1
AddressCambridge, MA 02142
Receiving water impaired303(D) Listed
SubwatershedCharles River-Frontal Boston Harbor (HUC 010900010704)

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

Effluent limits and exceedances

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Benzo[a]anthracene255March 31, 20268,360% over the limit
Chloride, total recoverable244July 31, 2026196% over the limit
Arsenic, total recoverable244April 30, 202684% over the limit
Lead, total recoverable244April 30, 2026334% over the limit
Copper, total recoverable233April 30, 202647% over the limit
Benzo[a]pyrene233March 31, 20264,543% over the limit
Total Group I Polycyclic Aromatic Hydrocarbons222March 31, 20265,026% over the limit
Benzo[k]fluoranthene211February 28, 202696% over the limit
Indeno[1,2,3-cd]pyrene211February 28, 20262,643% over the limit
Dibenz[a,h]anthracene211February 28, 2026800% over the limit
Mercury, total recoverable211May 31, 2026179% over the limit
Solids, total suspended111May 31, 2025116,567% over the limit
pH200
Nitrogen, total [as N]200
Cyanide, total [as CN]200
Sulfide, total [as S]200
Selenium, total recoverable200
Beryllium, total recoverable [as Be]200
Nickel, total recoverable200
Silver total recoverable200
Zinc, total recoverable200
Antimony, total [as Sb]200
Aluminum, total recoverable200
Cadmium, total recoverable200
Chromium, trivalent total recoverable200
Carbon tetrachloride200
1,2-Dichloroethane200
Benzene200
Acenaphthene200
Anthracene200
Chlorobenzene200
Chrysene200
Ethylbenzene200
Fluoranthene200
Fluorene200
Pyrene200
Tetrachloroethylene200
1,2-Dichlorobenzene200
1,3-Dichlorobenzene200
1,4-Dichlorobenzene200
2,4-Dimethylphenol200
Phenol200
Naphthalene200
Vinyl chloride200
Trichloroethylene200
Polychlorinated biphenyls [PCBs]200
BTEX200
Total Group II Polycyclic Aromatic Hydrocarbons200
Chromium, hexavalent tot recoverable200
Acetone200
1,4-Dioxane200
Turbidity100
Iron, total recoverable100
Flow, in conduit or thru treatment plant100
Solids, total dissolved [TDS]100
Hydrocarbons, total petroleum100

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 MAG912187.

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 MAG912187 there.

Nearby on the register

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

What this page shows

This public-records page covers NPDES permit MAG912187, held by John Moriarty & Associates for 55 BROADWAY, CAMBRIDGE, MA - DEMOLITION, Cambridge, MA, with a status of Effective and a Minor Discharger class. The page lists 56 pollutants on file, 12 of them under a numeric limit, and 55 with an effluent exceedance.