EPA Air · stack tests by county and year
Air-emissions stack tests in Washington County, Arkansas, 2026
- 55Stack 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 Washington County, Arkansas 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 Washington County facility page.
Washington County, Arkansas, 2026
Air-emissions stack tests in Washington County, other years
Air-emissions stack tests recorded in Washington County, Arkansas, 2026
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2026-07-08 | SOUTHWESTERN ELECTIRC POWER COMPANY - HARRY D. MATTISON POWER PLANT | Pass | State |
| 2026-07-07 | SOUTHWESTERN ELECTIRC POWER COMPANY - HARRY D. MATTISON POWER PLANT | Pass | State |
| 2026-05-27 | UNIVERSITY OF ARKANSAS - FAYETTEVILLE CAMPUS | Pass | State |
| 2026-04-02 | U OF A VETERINARY DIAGNOSTIC LABORATORY | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
| 2026-03-10 | APAC CENTRAL, INC. - SHARPS CRUSHER | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.