EPA Air · stack tests by county and year
Air-emissions stack tests in Armstrong County, Pennsylvania, 2025
- 17Stack 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 Armstrong 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 Armstrong County facility page.
Armstrong County, Pennsylvania, 2025
- Inspections 68
Air-emissions stack tests in Armstrong County, other years
Air-emissions stack tests recorded in Armstrong County, Pennsylvania, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-11-13 | EXCO APPALACHIA MIDSTREAM LLC/SAWMILL COMP STA | Pass | State |
| 2025-11-12 | PEOPLES NATURAL GAS CO LLC/ROARING RUN STA | Pass | State |
| 2025-08-11 | PEOPLES NATURAL GAS CO LLC/VALLEY STA | Pass | State |
| 2025-08-05 | SNYDER BROS INC/HOGBACK COMP STA | Pass | State |
| 2025-07-21 | INFINITY NATURAL RESOURCES SOUTH BEND COMP STA | Pass | State |
| 2025-06-18 | PEOPLES NATURAL GAS CO LLC/VALLEY STA | Pending | State |
| 2025-06-17 | PEOPLES NATURAL GAS CO LLC/VALLEY STA | Pass | State |
| 2025-06-11 | PEOPLES NATURAL GAS CO LLC/BELKNAP COMP STA | Pass | State |
| 2025-05-22 | SNYDER BROS INC/WHITE COMP STA | Pass | State |
| 2025-05-21 | SNYDER BROS INC/AMBROSE COMP STA | Pass | State |
| 2025-05-20 | SNYDER BROS INC/MUSHROOM MINE COMP STA | Pass | State |
| 2025-05-15 | SNYDER BROS INC/FURNACE RUN COMP STA | Pass | State |
| 2025-05-15 | SNYDER BROS INC/ENSIGN COMPRESSOR STATION | Pass | State |
| 2025-05-01 | EASTERN GAS TRANS & STORAGE/RURAL VLY COMP STA | Pass | State |
| 2025-04-15 | EQM GATHERING OPCO LLC/TERRA COMP STA | Pass | State |
| 2025-02-06 | INFINITY NATURAL RESOURCES SOUTH BEND COMP STA | Pass | State |
| 2025-01-14 | EXCO APPALACHIA MIDSTREAM LLC/POVERTY HILL COMP STA | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.