EPA Air · stack tests by county and year
Air-emissions stack tests in King County, Washington, 2026
- 5Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row below is one stack test recorded against a source in King County, Washington during 2026. A facility can appear several times: this is the year’s record of what happened, not a list of places. The sources themselves are on the King County facility page.
King County, Washington, 2026
- Inspections 266
Air-emissions stack tests in King County, other years
Air-emissions stack tests recorded in King County, Washington, 2026
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2026-05-27 | CENTRIO (WESTERN) | Pass | Local |
| 2026-02-20 | CEDAR GROVE COMPOST CO | Pass | Local |
| 2026-02-20 | CEDAR GROVE COMPOST CO | Pass | Local |
| 2026-02-10 | DYNO BATTERY INC. | Pass | Local |
| 2026-02-10 | DYNO BATTERY INC. | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.
What this page shows
This page covers Clean Air Act facilities in the EPA air register with stack tests in King county, WA, for 2026. The stack tests recorded in 2026 total 5.