EPA Air · stack tests by state, industry and year
Chemical manufacturing (NAICS 3251): stack tests in West Virginia, 2025
- 17Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row is one stack test recorded during 2025 at a West Virginia source whose primary industry code is NAICS 3251. A facility filing more than one industry code is counted under the first one on its record.
Chemical manufacturing (NAICS 3251) in West Virginia, other years
Other industries in West Virginia, 2025
- Utilities (NAICS 2211) 78
- Oil and gas extraction (NAICS 2111) 52
- Pipeline transportation (NAICS 4862) 27
- Utilities (NAICS 2212) 11
- Mining support (NAICS 2131) 6
- Petroleum and coal products manufacturing (NAICS 3241) 6
- Wood product manufacturing (NAICS 3212) 5
- Nonmetallic mineral product manufacturing (NAICS 3273) 4
- Nonmetallic mineral product manufacturing (NAICS 3274) 3
Air-emissions stack tests recorded in West Virginia, 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2025-12-10 | WESTLAKE NATRIUM LLC, WESTLAKE NATRIUM | PROCTOR, Marshall, WV | Pass | State |
| 2025-12-05 | WESTLAKE NATRIUM LLC, WESTLAKE NATRIUM | PROCTOR, Marshall, WV | Pass | State |
| 2025-12-04 | WESTLAKE NATRIUM LLC, WESTLAKE NATRIUM | PROCTOR, Marshall, WV | Pass | State |
| 2025-10-21 | DELRIN USA, LLC, DELRIN USA - WASHINGTON WORKS | WASHINGTON, Wood, WV | Pass | State |
| 2025-10-08 | WESTLAKE NATRIUM LLC, WESTLAKE NATRIUM | PROCTOR, Marshall, WV | Pass | State |
| 2025-09-24 | WESTLAKE NATRIUM LLC, WESTLAKE NATRIUM | PROCTOR, Marshall, WV | Pass | State |
| 2025-09-23 | AOC MATERIALS, LLC, NEAL PLANT | KENOVA, Wayne, WV | Pass | State |
| 2025-07-31 | WESTLAKE NATRIUM LLC, WESTLAKE NATRIUM | PROCTOR, Marshall, WV | Pass | State |
| 2025-07-30 | WESTLAKE NATRIUM LLC, WESTLAKE NATRIUM | PROCTOR, Marshall, WV | Pass | State |
| 2025-06-12 | THE CHEMOURS COMPANY FC, LLC, WASHINGTON WORKS — high-priority violation on file | WASHINGTON, Wood, WV | Pass | State |
| 2025-06-04 | MPM SILICONES, LLC, FRIENDLY | FRIENDLY, Tyler, WV | Pass | State |
| 2025-04-24 | THE CHEMOURS COMPANY FC, LLC, WASHINGTON WORKS — high-priority violation on file | WASHINGTON, Wood, WV | Pass | State |
| 2025-03-20 | COVESTRO LLC, NEW MARTINSVILLE | PROCTOR, Marshall, WV | Pass | State |
| 2025-02-28 | UNION CARBIDE CORPORATION, SOUTH CHARLESTON | SOUTH CHARLESTON, Kanawha, WV | Pass | State |
| 2025-02-25 | ALTIVIA SERVICES, LLC, INSTITUTE PLANT | DUNBAR, Kanawha, WV | Pass | State |
| 2025-02-20 | WESTLAKE NATRIUM LLC, WESTLAKE NATRIUM | PROCTOR, Marshall, WV | Pass | State |
| 2025-02-19 | WESTLAKE NATRIUM LLC, WESTLAKE NATRIUM | PROCTOR, Marshall, WV | Pass | State |
Primary NAICS code as filed on the facility record; dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.