EPA Air · stack tests by county and year
Air-emissions stack tests in Tyler County, West Virginia, 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 Tyler County, West Virginia 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 Tyler County facility page.
Tyler County, West Virginia, 2025
Air-emissions stack tests in Tyler County, other years
Air-emissions stack tests recorded in Tyler County, West Virginia, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-11-19 | ANTERO MIDSTREAM LLC, MOUNTAIN STATION | Pass | State |
| 2025-10-01 | ANTERO MIDSTREAM LLC, CASTLE PEAK STN | Pass | State |
| 2025-09-18 | ANTERO MIDSTREAM LLC, MIDDLEBOURNE V | Pass | State |
| 2025-09-12 | CNX MIDSTREAM OPERATING COMPANY LLC, SHIRLEY STATION | Pass | State |
| 2025-08-29 | ANTERO MIDSTREAM LLC, MIDDLEBOURNE III | Pass | State |
| 2025-06-04 | MPM SILICONES, LLC, FRIENDLY | Pass | State |
| 2025-05-14 | ANTERO MIDSTREAM LLC, MIDDLEBOURNE IV | Pass | State |
| 2025-03-03 | ANTERO MIDSTREAM LLC, MONROE STATION | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.