EPA Air · by county
Air-emissions sources in Mason County, West Virginia
- 6Facilities
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Every stationary source in Mason County, West Virginia that holds a Clean Air Act permit or is otherwise tracked by an air agency — planned, under construction, operating, seasonal or temporarily closed. Sources EPA records as permanently closed are not listed.
Every source’s record in Mason County
Each of the 5 operating major, synthetic minor and minor sources in Mason County, West Virginia has a record page: every source in Mason County, A to Z.
By emissions classification in Mason County
A source’s classification is the size band its potential emissions put it in: a major source is large enough to need a Title V operating permit, a synthetic minor has accepted limits to stay below that line, and a minor source sits below it outright.
Inspections in Mason County, by year
A compliance evaluation is the on-site or file review a state, local or federal air agency records against a permitted source.
Stack tests in Mason County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
- 2025 stack tests 7
- 2024 stack tests 6
- 2023 stack tests 6
- 2022 stack tests 7
- 2021 stack tests 4
- 2020 stack tests 3
- 2019 stack tests 5
- 2018 stack tests 3
- 2017 stack tests 9
Inspections in Mason County, year by year · Stack tests in Mason County, year by year
Other counties in West Virginia
Every county in the state with at least three sources on file.
- Hardy County 5
- Harrison County 33
- Jackson County 6
- Jefferson County 8
- Kanawha County 77
- Lewis County 18
- Lincoln County 5
- Logan County 18
- Marion County 18
- Marshall County 75
- McDowell County 30
- Mercer County 13
- Mineral County 5
- Mingo County 20
- Monongalia County 31
- Nicholas County 11
- Ohio County 38
- Pendleton County 3
- Pleasants County 12
Facilities
| Facility↑↓ | Classification↑↓ | HPV |
|---|---|---|
| APG POLYTECH, LLC, APPLE GROVE PLANT | Major source | No |
| APPALACHIAN POWER CO. - MOUNTAINEER PLANT, NEW HAVEN | Major source | No |
| FELMAN PRODUCTION, LLC, LETART | Major source | No |
| ICL-IP AMERICA INC., GALLIPOLIS FERRY | Synthetic minor source | No |
| NUCOR STEEL WEST VIRGINIA LLC, NUCORSTEEL | Major source | No |
| RICK JOHNSON MINING, LLC, MASON - RJM LOADOUT | Minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.
What this page shows
This page covers Clean Air Act facilities in the EPA air register for Mason county, WV. It lists 6 facilities in Mason county and 4 major sources.