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Clean Water Act discharge permit · NPDES MAG912011

MXD REDEVELOPMENT, Cambridge, MA: NPDES MAG912011 discharge permit, effluent exceedances, inspections, penalties

MXD REDEVELOPMENT, held by Turner Construction Company, holds NPDES permit MAG912011. 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 filedMXD REDEVELOPMENT
Permittee as filedTurner Construction Company
NPDES IDMAG912011
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
Chloride, total recoverable1224896July 31, 2026504,248% over the limit
Copper, total recoverable1218735June 30, 20267,586% over the limit
Phosphorus, total [as P]1016128April 30, 2026878,900% over the limit
Iron, total recoverable1217826April 30, 20261,243% over the limit
E. coli, colony forming units [CFU]813319September 30, 202557,837% over the limit
Cyanide, total [as CN]1216917June 30, 2026458% over the limit
Lead, total recoverable1216917April 30, 20264,838% over the limit
Arsenic, total recoverable1216715June 30, 2025333% over the limit
pH1216513April 30, 2026
Solids, total suspended68711May 31, 20262,567% over the limit
Zinc, total recoverable101429November 30, 20241,648% over the limit
Nitrogen, total [as N]121608February 28, 20252,000% over the limit
Acetone6826October 31, 202376% over the limit
Turbidity6815September 30, 2025
Vinyl chloride121553September 30, 2024125% over the limit
Nitrite + Nitrate total [as N]6782May 31, 202540% over the limit
Total Group I Polycyclic Aromatic Hydrocarbons6782October 31, 2024128% over the limit
Cadmium, total recoverable121531June 30, 2024358% over the limit
Selenium, total recoverable121520
Nickel, total recoverable121520
Chromium, trivalent total recoverable121520
Barium, total recoverable6760
Silver total recoverable6760
Antimony, total [as Sb]6760
Vanadium, total recoverable6760
Carbon tetrachloride6760
1,2-Dichloroethane6760
Chloroform6760
Benzene6760
Chlorobenzene6760
Tetrachloroethylene6760
1,1-Dichloroethane6760
Di-n-octyl phthalate6760
2,4-Dimethylphenol6760
Phenol6760
Naphthalene6760
Di[2-ethylhexyl] phthalate [DEHP]6760
Trichloroethylene6760
Polychlorinated biphenyls [PCBs]6760
BTEX6760
Flow, in conduit or thru treatment plant6760
Total Group II Polycyclic Aromatic Hydrocarbons6760
Solids, total dissolved [TDS]6760
Mercury, total recoverable6760
Carbon disulfide6760
cis-1,2-Dichloroethylene6760
Styrene6760
Hydrocarbons, total petroleum6760
Oil & Grease4570

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 MAG912011.

Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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.

Watch this permit

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, MAG912011.

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How we handle your data → Privacy

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 MAG912011 there.

Nearby on the register

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