EPA Air · by county
Air-emissions sources in Walla Walla County, Washington
- 5Facilities
Every stationary source in Walla Walla 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 Walla Walla County
Each of the 5 operating major, synthetic minor and minor sources in Walla Walla County, Washington has a record page: every source in Walla Walla County, A to Z.
By emissions classification in Walla Walla 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 Walla Walla 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.
Violations in Walla Walla County, by year
A high-priority violation is the most serious class of Clean Air Act non-compliance an agency records against a source; a federally reportable violation is the next step down in severity.
Stack tests in Walla Walla County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
- 2025 stack tests 5
- 2024 stack tests 5
- 2023 stack tests 8
- 2022 stack tests 11
- 2021 stack tests 16
- 2020 stack tests 26
- 2019 stack tests 17
- 2018 stack tests 4
- 2017 stack tests 9
Inspections in Walla Walla County, year by year · Violations in Walla Walla County, year by year · Stack tests in Walla Walla County, year by year
Other counties in Washington
Every county in the state with at least three sources on file.
- 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
- Mason County 5
- Okanogan County 19
- Pierce County 75
- Skagit County 16
- Snohomish County 65
- Spokane County 25
- Stevens County 5
- Thurston County 5
- Undetermined County 29
- Whatcom County 21
- Yakima County 79
Facilities
| Facility↑↓ | Classification↑↓ | HPV |
|---|---|---|
| CLIFFSTAR CORP | Minor source | No |
| GAS TRANSMISSION NORTHWEST #8 | Major source | No |
| PACKAGING CORPORATION OF AMERICA | Major source | Yes |
| TYSON FRESH MEAT | Minor source | No |
| WASH STATE PENITENTIARY | 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 Walla Walla county, WA. It lists 5 facilities in Walla Walla county and 2 major sources.