EPA Air · stack tests by state and year
Air-emissions stack tests in Massachusetts, 2025
- 59Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Every stack test below was recorded against a source in Massachusetts during 2025; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Counties in Massachusetts, 2025
- Middlesex County 13
- Worcester County 10
- Essex County 9
- Norfolk County 7
- Hampden County 6
- Suffolk County 6
Massachusetts, other years
Air-emissions stack tests recorded in Massachusetts, 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2025-10-29 | P & G GILLETTE | BOSTON, CITY OF, Suffolk, MA | Pass | State |
| 2025-10-28 | CONSTELLATION WEST MEDWAY LLC | MEDWAY, Norfolk, MA | Pending | State |
| 2025-10-23 | GENTEX OPTICS | DUDLEY, Worcester, MA | Pass | State |
| 2025-10-17 | TWIN RIVERS TECHNOLOGIES MANUFACTURING C | QUINCY, CITY OF, Norfolk, MA | Pending | State |
| 2025-10-16 | BLACKSTONE POWER GENERATING LLC | BLACKSTONE, Worcester, MA | Pending | State |
| 2025-10-13 | MILFORD REGIONAL MEDICAL CENTER INC | MILFORD, TOWN OF, Worcester, MA | Pending | State |
| 2025-10-01 | CONSTELLATION WEST MEDWAY LLC | MEDWAY, Norfolk, MA | Pass | State |
| 2025-09-15 | CRANE & COMPANY INC | DALTON, TOWN OF, Berkshire, MA | Incomplete | State |
| 2025-09-11 | PITTSFIELD GENERATING COMPANY LP — high-priority violation on file | PITTSFIELD, TOWN OF, Berkshire, MA | Pass | State |
| 2025-09-10 | MEDICAL AREA TOTAL ENERGY | BOSTON, CITY OF, Suffolk, MA | Pass | State |
| 2025-09-08 | MWRA DEER ISLAND | BOSTON, CITY OF, Suffolk, MA | Pass | State |
| 2025-08-21 | BENEVENTO ASPHALT CORPORATION | WILMINGTON, Middlesex, MA | Pass | U.S. EPA |
| 2025-08-19 | SHREWSBURY ELECTRIC AND CABLE OPERATIONS | SHREWSBURY, TOWN OF, Worcester, MA | Pass | State |
| 2025-08-11 | TEKNOR APEX COMPANY | LEOMINSTER, CITY OF, Worcester, MA | Pass | State |
| 2025-08-07 | EASTERN PACKAGING INC | LAWRENCE, CITY OF, Essex, MA | Pass | State |
| 2025-08-04 | SKYWORKS SOLUTIONS INC | WOBURN, TOWN OF, Middlesex, MA | Pending | State |
| 2025-07-24 | CONSTELLATION WEST MEDWAY LLC | MEDWAY, Norfolk, MA | Pass | State |
| 2025-07-23 | BARWAY FARM ORGANICS RECYCLERY | DEERFIELD, Franklin, MA | Pass | State |
| 2025-07-18 | TENNESSEE GAS PIPELINE STATION 261 | AGAWAM, Hampden, MA | Pass | State |
| 2025-07-17 | COLONIAL GAS TEWKSBURY LNG | TEWKSBURY, Middlesex, MA | Pass | State |
| 2025-07-16 | AGGREGATE INDUSTRIES (AMRIZE FKA HOLCIM) | SAUGUS, TOWN OF, Essex, MA | Pending | State |
| 2025-07-15 | G. LOPES CONSTRUCTION, INC. | RAYNHAM, Bristol, MA | Pass | U.S. EPA |
| 2025-07-11 | SPRINGFIELD CEMETERY | SPRINGFIELD, CITY OF, Hampden, MA | Incomplete | State |
| 2025-07-11 | PEABODY MUNICIPAL LIGHT PLANT | PEABODY, CITY OF, Essex, MA | Pass | State |
| 2025-07-03 | BENEVENTO ASPHALT CORPORATION | WILMINGTON, Middlesex, MA | Pass | State |
| 2025-06-30 | WHEELABRATOR MILLBURY INC | MILLBURY, Worcester, MA | Pass | State |
| 2025-06-27 | REWORLD HAVERHILL LLC F.K.A. COVANTA HAVERHILL INCORPORATED | HAVERHILL, TOWN OF, Essex, MA | Pass | State |
| 2025-06-27 | HOLLINGSWORTH & VOSE | GROTON, Middlesex, MA | Pass | State |
| 2025-06-25 | HOLLINGSWORTH & VOSE | GROTON, Middlesex, MA | Pass | State |
| 2025-06-20 | COORSTEK INC | WORCESTER, CITY OF, Worcester, MA | Pass | State |
| 2025-06-11 | LIFOAM INDUSTRIES LLC — high-priority violation on file | NORTH ANDOVER, Essex, MA | Pass | State |
| 2025-06-05 | WHEELABRATOR SAUGUS INC | SAUGUS, TOWN OF, Essex, MA | Pass | State |
| 2025-06-05 | NEWPORT AGGREGATES | NORTH CHELMSFORD, Middlesex, MA | Pass | U.S. EPA |
| 2025-05-23 | SEMASS PARTNERSHIP | ROCHESTER, Plymouth, MA | Pass | State |
| 2025-05-20 | BENEVENTO ASPHALT CORPORATION | WILMINGTON, Middlesex, MA | Pass | U.S. EPA |
| 2025-05-07 | MWRA FORE RIVER STAGING AREA | QUINCY, CITY OF, Norfolk, MA | Pass | State |
| 2025-04-29 | BENEVENTO ASPHALT CORPORATION | WILMINGTON, Middlesex, MA | Pass | U.S. EPA |
| 2025-04-22 | WHEELABRATOR NORTH ANDOVER INCORPORATED | NORTH ANDOVER, TOWN OF, Essex, MA | Pass | State |
| 2025-04-17 | MEDICAL AREA TOTAL ENERGY | BOSTON, CITY OF, Suffolk, MA | Pass | State |
| 2025-04-11 | MASSACHUSETTS INSTITUTE OF TECHNOLOGY | CAMBRIDGE, TOWN OF, Middlesex, MA | Pass | State |
| 2025-04-09 | VICINITY ENERGY LLC | BOSTON, CITY OF, Suffolk, MA | Pass | State |
| 2025-04-02 | SMITH COLLEGE | NORTHAMPTON, CITY OF, Hampshire, MA | Pass | State |
| 2025-04-01 | VICINITY ENERGY LLC | BOSTON, CITY OF, Suffolk, MA | Pass | State |
| 2025-03-24 | STONY BROOK ENERGY CENTER — high-priority violation on file | LUDLOW, TOWN OF, Hampden, MA | Pass | State |
| 2025-03-19 | SOUTHBRIDGE LANDFILL GAS MANAGEMENT | SOUTHBRIDGE, Worcester, MA | Pass | State |
| 2025-03-11 | AT&T SPRINGFIELD | SPRINGFIELD, CITY OF, Hampden, MA | Pending | State |
| 2025-02-25 | CHICOPEE ELECTRIC LIGHT — high-priority violation on file | CHICOPEE, TOWN OF, Hampden, MA | Pass | State |
| 2025-02-12 | LYNN REGIONAL WWTP | LYNN, CITY OF, Essex, MA | Pass | State |
| 2025-02-12 | CONSTELLATION WEST MEDWAY LLC | MEDWAY, Norfolk, MA | Pass | State |
| 2025-02-11 | MASS MUNICIPAL WHOLESALE ELECTRIC CO | PEABODY, Essex, MA | Pass | State |
| 2025-02-05 | UMASS MEDICAL CENTER — high-priority violation on file | WORCESTER, CITY OF, Worcester, MA | Pass | State |
| 2025-01-21 | CONSTELLATION WEST MEDWAY LLC | MEDWAY, Norfolk, MA | Pass | State |
| 2025-01-21 | BAKER COMMODITIES | TEWKSBURY, Middlesex, MA | Pending | State |
| 2025-01-14 | PREMATECH ADVANCED CERAMICS | WORCESTER, Worcester, MA | Pass | State |
| 2025-01-13 | SOLUTIA INCORPORATED — high-priority violation on file | SPRINGFIELD, CITY OF, Hampden, MA | Pass | State |
| 2025-01-09 | SEMASS PARTNERSHIP | ROCHESTER, Plymouth, MA | Pass | State |
| 2025-01-02 | ERVING PAPER MILLS | ERVING, Franklin, MA | Pass | State |
| 2025-01-02 | HARVARD UNIVERSITY | CAMBRIDGE, TOWN OF, Middlesex, MA | Pass | State |
| 2025-01-02 | HOPKINTON LNG CORP | HOPKINTON, Middlesex, MA | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.