EPA Air · stack tests by county and year
Air-emissions stack tests in Middlesex County, Massachusetts, 2022
- 3Stack 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 Middlesex County, Massachusetts during 2022. 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 Middlesex County facility page.
Middlesex County, Massachusetts, 2022
Air-emissions stack tests in Middlesex County, other years
Air-emissions stack tests recorded in Middlesex County, Massachusetts, 2022
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2022-12-21 | HOPKINTON LNG CORP | Pass | State |
| 2022-04-05 | MASSACHUSETTS INSTITUTE OF TECHNOLOGY | Pass | State |
| 2022-01-24 | BENEVENTO ASPHALT CORPORATION | Fail | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.