Clean Water Act discharge permit · NPDES MAR1005CM
MEDWAY GRID ENERGY STORAGE PROJECT, Medway, MA: NPDES MAR1005CM discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
MEDWAY GRID ENERGY STORAGE PROJECT, held by McPhee Electric Ltd., holds NPDES permit MAR1005CM. EPA’s file records it issued August 20, 2024 and expiring February 16, 2027. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
What the register holds for MEDWAY GRID ENERGY STORAGE PROJECT: its NPDES ID, its permit type and status, its dates, its address in Medway, Massachusetts. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MAR1005CM.
Identity
| Facility as filed | MEDWAY GRID ENERGY STORAGE PROJECT |
|---|---|
| Permittee as filed | McPhee Electric Ltd. |
| NPDES ID | MAR1005CM |
| 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 | August 20, 2024 |
| Expiration date | February 16, 2027 |
| Issuing agency | U.S. EPA |
| Address | Medway, MA 02053 |
| Subwatershed | Headwaters Charles River (HUC 010900010601) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
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 MAR1005CM.
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 MAR1005CM.
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.
Watch this permit
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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 MAR1005CM there.
Nearby on the register
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- Every permit record in Medway, A to Z
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- Every permit record in Massachusetts, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.