EPA Air · by county
Air-emissions sources in Clark County, Washington
- 25Facilities
Every stationary source in Clark 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 Clark County
Each of the 24 operating major, synthetic minor and minor sources in Clark County, Washington has a record page: every source in Clark County, A to Z.
By emissions classification in Clark 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 Clark 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 18
- 2025 inspections 12
- 2024 inspections 16
- 2023 inspections 17
- 2022 inspections 19
- 2021 inspections 23
- 2020 inspections 8
- 2019 inspections 14
- 2018 inspections 15
- 2017 inspections 17
Violations in Clark 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 Clark County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
- 2024 stack tests 4
- 2023 stack tests 4
- 2022 stack tests 3
- 2021 stack tests 22
- 2020 stack tests 21
- 2019 stack tests 6
- 2018 stack tests 18
- 2017 stack tests 10
Inspections in Clark County, year by year · Violations in Clark County, year by year · Stack tests in Clark County, year by year
Other counties in Washington
Every county in the state with at least three sources on file.
- Benton County 9
- Clallam County 8
- 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
Facilities
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 Clark county, WA. It lists 25 facilities in Clark county and 4 major sources.