EPA Air · stack tests by county and year
Air-emissions stack tests in Hampden County, Massachusetts, 2021
- 4Stack 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 Hampden County, Massachusetts during 2021. 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 Hampden County facility page.
Hampden County, Massachusetts, 2021
- Inspections 64
Air-emissions stack tests in Hampden County, other years
What stands out
- Stack tests in Hampden County, Massachusetts, rose from 3 in 2019, the previous year on file, to 4 in 2021.
- The county’s file for stack tests holds 8 years of events, from 2017 through 2026.
- Its 4 stack tests rank 2nd of the 5 county cells in Massachusetts for 2021.
- Its 4 stack tests are 13.8% of the 29 the state’s file holds for 2021.
Every line is computed by formula from the state’s stored file; nothing is estimated.
Air-emissions stack tests recorded in Hampden County, Massachusetts, 2021
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2021-11-22 | ROCKWOOD FARM ORGANIC RECYCLERY | Pass | State |
| 2021-11-17 | SOLUTIA INCORPORATED — high-priority violation on file | Pass | State |
| 2021-11-15 | AMERESCO CHICOPEE ENERGY, INC | Pass | State |
| 2021-11-10 | SOLUTIA INCORPORATED — high-priority violation on file | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.
What this page shows
This page covers Clean Air Act facilities in the EPA air register with stack tests in Hampden county, MA, in 2021. It lists 4 stack tests recorded in 2021.