EPA Air · by county
Air-emissions sources in Benton County, Washington
- 9Facilities
Every stationary source in Benton County, Washington 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.
By emissions classification in Benton 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 Benton 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.
- 2026 — inspections 4
- 2025 — inspections 20
- 2024 — inspections 32
- 2023 — inspections 74
- 2022 — inspections 44
- 2021 — inspections 47
- 2020 — inspections 59
- 2019 — inspections 43
- 2018 — inspections 57
- 2017 — inspections 61
Facilities
| Facility↑↓ | Classification↑↓ | HPV |
|---|---|---|
| BUILDERS FIRST SOURCE | Synthetic minor source | No |
| FRAMATOME NP | Synthetic minor source | No |
| LAMB WESTON | Synthetic minor source | No |
| MAVERIK STORE #448 | Minor source | No |
| NORTHWEST PIPELINE CORP PLYMOUTH PLANT | Major source | No |
| NUTRIEN | Major source | No |
| TREE TOP, INC. | Synthetic minor source | No |
| US ENERGY DEPT - HANFORD | Major source | Yes |
| WASHINGTON STATE DEPT OF HEALTH | Minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.