EPA Air · stack tests by county and year
Air-emissions stack tests in Chester County, Pennsylvania, 2025
- 8Stack 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 Chester County, Pennsylvania 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 Chester County facility page.
Chester County, Pennsylvania, 2025
Air-emissions stack tests in Chester County, other years
Air-emissions stack tests recorded in Chester County, Pennsylvania, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-10-25 | FLOWERS BAKING CO/OXFORD PLT — high-priority violation on file | Pass | State |
| 2025-08-28 | COLUMBIA GAS TRANS LLC/EAGLE | Pass | State |
| 2025-07-15 | ALLAN MYERS LP/COATESVILLE ASPHALT PLT | Pass | State |
| 2025-06-12 | ENERGY TRANSFER MKT & TERM LP/MALVERN TERM | Pass | State |
| 2025-06-12 | ENERGY TRANSFER MKT & TERM LP/MALVERN TERM | Pass | State |
| 2025-03-14 | LONGWOOD GARDENS/KENNETT SQUARE | Pass | State |
| 2025-02-12 | COLUMBIA GAS TRANS LLC/EAGLE | Pass | State |
| 2025-01-23 | TRANSCONTINENTAL GAS/FRAZER STA 200 | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.