EPA Air · stack tests by county and year
Air-emissions stack tests in Delaware County, Pennsylvania, 2026
- 5Stack 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 Delaware County, Pennsylvania during 2026. 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 Delaware County facility page.
Delaware County, Pennsylvania, 2026
Air-emissions stack tests in Delaware County, other years
Air-emissions stack tests recorded in Delaware County, Pennsylvania, 2026
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2026-06-17 | SUNOCO LLC/MH RACE FUELS — high-priority violation on file | Pass | State |
| 2026-05-12 | MONROE ENERGY LLC/TRAINER — high-priority violation on file | Pass | State |
| 2026-05-05 | MONROE ENERGY LLC/TRAINER — high-priority violation on file | Pass | State |
| 2026-01-22 | ENERGY TRANSF MKT & TERM LP/MARCUS HOOK TERM — high-priority violation on file | Pass | State |
| 2026-01-08 | ADELPHIA GATEWAY LLC/MARCUS HOOK COMPRESSOR STA | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.