EPA Air · stack tests by county and year
Air-emissions stack tests in Columbia County, Arkansas, 2025
- 15Stack 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 Columbia County, Arkansas during 2025. 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 Columbia County facility page.
Columbia County, Arkansas, 2025
Air-emissions stack tests in Columbia County, other years
Air-emissions stack tests recorded in Columbia County, Arkansas, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-12-04 | ALBEMARLE CORPORATION - WEST PLANT | Pass | State |
| 2025-11-20 | MISSION CREEK OPCO, LLC - DORCHEAT GAS PLANT | Pass | State |
| 2025-10-29 | POTLATCHDELTIC MANUFACTURING LLC - WALDO LUMBER MILL | Pass | State |
| 2025-10-02 | ALBEMARLE CORPORATION-SOUTH PLANT | Pass | State |
| 2025-10-02 | ALBEMARLE CORPORATION-SOUTH PLANT | Pass | State |
| 2025-10-02 | ALBEMARLE CORPORATION-SOUTH PLANT | Pass | State |
| 2025-10-02 | ALBEMARLE CORPORATION-SOUTH PLANT | Pass | State |
| 2025-10-02 | ALBEMARLE CORPORATION-SOUTH PLANT | Pass | State |
| 2025-07-30 | ALBEMARLE CORPORATION - WEST PLANT | Fail | State |
| 2025-07-29 | WEYERHAEUSER NR COMPANY - EMERSON | Pass | State |
| 2025-05-07 | COLUMBIA COUNTY LANDFILL | Pass | State |
| 2025-04-17 | POTLATCHDELTIC MANUFACTURING LLC - WALDO LUMBER MILL | Pass | State |
| 2025-04-17 | POTLATCHDELTIC MANUFACTURING LLC - WALDO LUMBER MILL | Pass | State |
| 2025-04-17 | POTLATCHDELTIC MANUFACTURING LLC - WALDO LUMBER MILL | Pass | State |
| 2025-04-17 | POTLATCHDELTIC MANUFACTURING LLC - WALDO LUMBER MILL | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.