EPA Air · stack tests by state and year
Air-emissions stack tests in West Virginia, 2026
- 114Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Every stack test below was recorded against a source in West Virginia during 2026; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Counties in West Virginia, 2026
- Marshall County 26
- Harrison County 15
- Doddridge County 9
- Pleasants County 9
- Monongalia County 7
- Putnam County 5
- Wetzel County 5
- Grant County 5
- Berkeley County 5
- Marion County 4
- Brooke County 3
- Kanawha County 3
- Tyler County 3
- Pendleton County 3
West Virginia, other years
Air-emissions stack tests recorded in West Virginia, 2026
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2026-02-05 | MONONGAHELA POWER COMPANY, HARRISON STATION | HAYWOOD, Harrison, WV | Pass | State |
| 2026-02-05 | CONSTELLIUM ROLLED PRODUCTS RAVENSWOOD, LLC, RAVENSWOOD | RAVENSWOOD, Jackson, WV | Pass | State |
| 2026-02-05 | APPALACHIA MIDSTREAM SERVICES, L.L.C., MILLER STATION | BANNEN, Marshall, WV | Pass | State |
| 2026-02-04 | MONONGAHELA POWER COMPANY, HARRISON STATION | HAYWOOD, Harrison, WV | Pass | State |
| 2026-02-03 | EASTERN GAS TRANSMISSION AND STORAGE, INC., LIGHTBURN STATION | JANE LEW, Lewis, WV | Pass | State |
| 2026-02-03 | APPALACHIAN POWER CO. - MOUNTAINEER PLANT, NEW HAVEN | NEW HAVEN, Mason, WV | Pass | State |
| 2026-02-03 | MONONGAHELA POWER COMPANY, FORT MARTIN STATION | MAIDSVILLE, Monongalia, WV | Pass | State |
| 2026-02-03 | MONONGAHELA POWER COMPANY, FORT MARTIN STATION | MAIDSVILLE, Monongalia, WV | Pass | State |
| 2026-01-29 | APPALACHIA MIDSTREAM SERVICES, L.L.C., BUFFALO STATION | BETHANY, Brooke, WV | Pass | State |
| 2026-01-29 | ANTERO MIDSTREAM LLC, PERKINS COMPRESSOR STATION | SALEM, Doddridge, WV | Pass | State |
| 2026-01-29 | ANTERO MIDSTREAM LLC, SOUTH CANTON STATION | WEST UNION, Doddridge, WV | Pass | State |
| 2026-01-15 | COLUMBIA GAS TRANSMISSION, LLC, LOST RIVER | MATHIAS, Hardy, WV | Pass | State |
| 2026-01-13 | VIRGINIA ELECTRIC AND POWER COMPANY, MT. STORM | MT. STORM, Grant, WV | Pass | State |
| 2026-01-07 | COLUMBIA GAS TRANSMISSION, LLC, SENECA | SENECA ROCKS, Pendleton, WV | Pass | State |
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Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.