Clean Water Act discharge permit · NPDES MA0005339
MT TOM STATION, Holyoke, MA: NPDES MA0005339 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 11Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
MT TOM STATION, held by MT TOM GENERATING COMPANY LLC, holds NPDES permit MA0005339, which discharges to Connecticut River. EPA’s file records it issued September 18, 1992 and expiring September 17, 1997. 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 filed | MT TOM STATION |
|---|---|
| Permittee as filed | MT TOM GENERATING COMPANY LLC |
| NPDES ID | MA0005339 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | September 18, 1992 |
| Expiration date | September 17, 1997 |
| Address | Holyoke, MA 01040 |
| Receiving water | Connecticut River |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Dry Brook-Connecticut River (HUC 010802010610) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 11Pollutants on file
- 11Under a numeric limit
- 9With a violation of any kind
- 5With 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 | 16 | 12 | 10 | May 31, 2009 | 10,300% over the limit |
| Flow, in conduit or thru treatment plant | 23 | 4 | 4 | August 31, 2010 | 3% over the limit |
| pH | 22 | 6 | 2 | June 30, 2012 | |
| Iron, total [as Fe] | 10 | 3 | 1 | June 30, 2012 | 24% over the limit |
| Oxidants, total residual | 2 | 1 | 1 | May 31, 2013 | 20% over the limit |
| Oil & Grease | 16 | 2 | 0 | ||
| Copper, total [as Cu] | 10 | 2 | 0 | ||
| Nickel, total [as Ni] | 10 | 2 | 0 | ||
| Zinc, total [as Zn] | 10 | 2 | 0 | ||
| Temp. diff. between intake and discharge | 2 | 0 | 0 | ||
| Temperature, water deg. fahrenheit | 1 | 0 | 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 MA0005339.
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 MA0005339 there.
Nearby on the register
- Discharge permits in Holyoke
- Every permit record in Holyoke, A to Z
- Discharge permits in Massachusetts
- Every permit record in Massachusetts, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.