Clean Water Act discharge permit · NPDES MA0003590
MBTA COMMUTER RAIL MAINTENANCE FACILITY, Somerville, MA: NPDES MA0003590 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
MBTA COMMUTER RAIL MAINTENANCE FACILITY holds NPDES permit MA0003590, which discharges to Unnamed Trib To Millers River. EPA’s file records it issued November 9, 1976 and expiring November 30, 1981. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | MBTA COMMUTER RAIL MAINTENANCE FACILITY |
|---|---|
| Permittee as filed | MBTA COMMUTER RAIL MAINTENANCE FACILITY |
| NPDES ID | MA0003590 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Industrial stormwater |
| Issued | November 9, 1976 |
| Expiration date | November 30, 1981 |
| Address | Somerville, MA 02143 |
| Receiving water | UNNAMED TRIB TO MILLERS RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Charles River-Frontal Boston Harbor (HUC 010900010704) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 16Pollutants on file
- 0Under a numeric limit
- 16With a violation of any kind
- 3With an effluent exceedance
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 measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Solids, total suspended | 0 | 62 | 24 | June 30, 2024 | 3,700% over the limit |
| Oil & Grease | 0 | 57 | 19 | December 31, 2023 | 3,367% over the limit |
| pH | 0 | 81 | 5 | December 31, 2020 | |
| Flow, in conduit or thru treatment plant | 0 | 156 | 0 | ||
| E. coli, thermotol, MF, MTEC | 0 | 154 | 0 | ||
| Coliform, fecal general | 0 | 150 | 0 | ||
| Temperature, water deg. fahrenheit | 0 | 38 | 0 | ||
| Priority Pollutants | 0 | 5 | 0 | ||
| LC50 Static 48Hr Acute Ceriodaphnia dubia | 0 | 3 | 0 | ||
| LC50 Static 48Hr Acute Pimephales promelas | 0 | 3 | 0 | ||
| NOEL Static 7Day Chronic Ceriodaphnia dubia | 0 | 3 | 0 | ||
| Noel Static 7Day Chronic Pimephales | 0 | 3 | 0 | ||
| Phosphorus, total [as P] | 0 | 2 | 0 | ||
| Magnesium, total [as Mg] | 0 | 2 | 0 | ||
| Iron, total [as Fe] | 0 | 2 | 0 | ||
| Benzene | 0 | 2 | 0 |
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 MA0003590.
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, MA0003590.
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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 MA0003590 there.
Nearby on the register
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- Every permit record in Somerville, A to Z
- Discharge permits in Massachusetts
- Every permit record in Massachusetts, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.