EPA Air · by county
Air-emissions sources in Multnomah County, Oregon
- 26Facilities
9 changes to this record in 90 days; alerts $99/month.
Start the watch
- One source — $99/month
- One county — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
Every stationary source in Multnomah County, Oregon 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 Multnomah County
Each of the 25 operating major, synthetic minor and minor sources in Multnomah County, Oregon has a record page: every source in Multnomah County, A to Z.
By emissions classification in Multnomah 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.
- Major source 24
Inspections in Multnomah 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 5
- 2025 inspections 14
- 2024 inspections 26
- 2023 inspections 16
- 2022 inspections 28
- 2021 inspections 12
- 2019 inspections 31
- 2018 inspections 24
- 2017 inspections 25
Violations in Multnomah 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 Multnomah County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
- 2025 stack tests 4
- 2024 stack tests 7
- 2023 stack tests 3
- 2022 stack tests 4
- 2021 stack tests 6
- 2019 stack tests 3
- 2018 stack tests 3
Inspections in Multnomah County, year by year · Violations in Multnomah County, year by year · Stack tests in Multnomah County, year by year
Other counties in Oregon
Every county in the state with at least three sources on file.
- Benton County 5
- Clackamas County 5
- Columbia County 3
- Deschutes County 6
- Douglas County 12
- Jackson County 7
- Jefferson County 3
- Klamath County 7
- Lane County 38
- Linn County 14
- Malheur County 3
- Marion County 3
- Morrow County 8
- Polk County 3
- Umatilla County 12
- Union County 4
- Wasco County 4
- Washington County 5
- Yamhill County 4
Facilities
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.