EPA Air · stack tests by county and year
Air-emissions stack tests in Warren County, Pennsylvania, 2025
- 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 Warren 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 Warren County facility page.
Warren County, Pennsylvania, 2025
- Inspections 24
Air-emissions stack tests in Warren County, other years
Air-emissions stack tests recorded in Warren County, Pennsylvania, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-12-23 | PPP FUTURE DEV INC/WARREN | Pass | State |
| 2025-12-18 | UNITED REFINING CO/WARREN PLT | Pass | State |
| 2025-08-21 | UNITED REFINING CO/WARREN PLT | Pass | State |
| 2025-05-20 | LIGNETICS OF NEW ENGLAND/YOUNGSVILLE | Pass | State |
| 2025-03-27 | UNITED REFINING CO/WARREN PLT | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.