EPA Air · by county
Air-emissions sources in Mason County, Washington
- 5Facilities
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Every stationary source in Mason 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.
Every source’s record in Mason County
Each of the 5 operating major, synthetic minor and minor sources in Mason County, Washington has a record page: every source in Mason County, A to Z.
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.
Inspections in Mason County, year by year
Other counties in Washington
Every county in the state with at least three sources on file.
- Clallam County 8
- Clark County 25
- Cowlitz County 17
- Franklin County 6
- Grant County 12
- Grays Harbor County 19
- King County 119
- Kitsap County 37
- Klickitat County 5
- Lewis County 15
- Okanogan County 19
- Pierce County 75
- Skagit County 16
- Snohomish County 65
- Spokane County 25
- Stevens County 5
- Thurston County 5
- Undetermined County 29
- Walla Walla County 5
Facilities
| Facility↑↓ | Classification↑↓ | HPV |
|---|---|---|
| ALTA FOREST PRODUCTS | Synthetic minor source | No |
| JENSEN PRECAST | Synthetic minor source | No |
| SHELTON ASPHALT PLANT | Minor source | No |
| SIERRA PACIFIC INDUSTRIES - SHELTON | Major source | No |
| TWIN TOTEMS CONVENIENCE STORE | 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, WA. It lists 5 facilities in Mason county and 1 major source.