Clean Water Act discharge permit · NPDES MA0004341
WYMAN-GORDON COMPANY, North Grafton, MA: NPDES MA0004341 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 0Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
WYMAN-GORDON COMPANY holds NPDES permit MA0004341, which discharges to Quinsigamond And Flint Pond. EPA’s file records it issued June 30, 1997 and expiring July 30, 2002. 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.
Identity
| Facility as filed | WYMAN-GORDON COMPANY |
|---|---|
| Permittee as filed | WYMAN-GORDON COMPANY |
| NPDES ID | MA0004341 |
| 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 | June 30, 1997 |
| Expiration date | July 30, 2002 |
| Address | North Grafton, MA 01536 |
| Receiving water | QUINSIGAMOND AND FLINT POND |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Quinsigamond River (HUC 010900030103) |
| NAICS | 336411 – Aircraft Manufacturing |
| SIC | 3728 – Aircraft Parts And Equipment |
| Other EPA IDs (FRS) | RCRA handler MAD001128032; ICIS-AIR source MA0000002511800039 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 15Pollutants on file
- 0Under a numeric limit
- 15With a violation of any kind
- 4With 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 |
|---|---|---|---|---|---|
| pH | 0 | 203 | 133 | December 31, 2020 | |
| LC50 Static 48Hr Acute Ceriodaphnia dubia | 0 | 18 | 9 | December 31, 2014 | 99,999% over the limit |
| Solids, total suspended | 0 | 67 | 6 | June 30, 2007 | 138% over the limit |
| Copper, total [as Cu] | 0 | 45 | 1 | March 31, 2019 | 37% over the limit |
| Trichloroethylene | 0 | 42 | 0 | ||
| Tetrachloroethylene | 0 | 42 | 0 | ||
| Oil & Grease | 0 | 35 | 0 | ||
| Flow, in conduit or thru treatment plant | 0 | 32 | 0 | ||
| Iron, total [as Fe] | 0 | 15 | 0 | ||
| Aluminum, total [as Al] | 0 | 15 | 0 | ||
| Zinc, total [as Zn] | 0 | 8 | 0 | ||
| Arsenic, total [as As] | 0 | 2 | 0 | ||
| Lead, total [as Pb] | 0 | 2 | 0 | ||
| Nickel, total [as Ni] | 0 | 2 | 0 | ||
| Mercury, total [as Hg] | 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 MA0004341.
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 MA0004341 there.
Nearby on the register
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- Every permit record in North Grafton, A to Z
- Discharge permits in Massachusetts
- Every permit record in Massachusetts, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.