EPA Air · stack tests by county and year
Air-emissions stack tests in Worcester County, Massachusetts, 2025
- 10Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row below is one stack test recorded against a source in Worcester County, Massachusetts during 2025. A facility can appear several times: this is the year’s record of what happened, not a list of places. The sources themselves are on the Worcester County facility page.
Worcester County, Massachusetts, 2025
Air-emissions stack tests in Worcester County, other years
Air-emissions stack tests recorded in Worcester County, Massachusetts, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-10-23 | GENTEX OPTICS | Pass | State |
| 2025-10-16 | BLACKSTONE POWER GENERATING LLC | Pending | State |
| 2025-10-13 | MILFORD REGIONAL MEDICAL CENTER INC | Pending | State |
| 2025-08-19 | SHREWSBURY ELECTRIC AND CABLE OPERATIONS | Pass | State |
| 2025-08-11 | TEKNOR APEX COMPANY | Pass | State |
| 2025-06-30 | WHEELABRATOR MILLBURY INC | Pass | State |
| 2025-06-20 | COORSTEK INC | Pass | State |
| 2025-03-19 | SOUTHBRIDGE LANDFILL GAS MANAGEMENT | Pass | State |
| 2025-02-05 | UMASS MEDICAL CENTER — high-priority violation on file | Pass | State |
| 2025-01-14 | PREMATECH ADVANCED CERAMICS | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.