EPA Air · stack tests by county and year
Air-emissions stack tests in Union County, Arkansas, 2025
- 16Stack 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 Union 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 Union County facility page.
Union County, Arkansas, 2025
Air-emissions stack tests in Union County, other years
Air-emissions stack tests recorded in Union County, Arkansas, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-12-17 | LSB CHEMICAL LLC | Pass | State |
| 2025-12-17 | LSB CHEMICAL LLC | Fail | State |
| 2025-11-20 | LANXESS CORPORATION - WEST PLANT | Incomplete | State |
| 2025-11-20 | LANXESS CORPORATION - WEST PLANT | Pass | State |
| 2025-11-19 | LANXESS CORPORATION-SOUTH PLANT | Incomplete | State |
| 2025-11-19 | LANXESS CORPORATION-SOUTH PLANT | Pass | State |
| 2025-10-23 | LSB CHEMICAL LLC | Pass | State |
| 2025-10-23 | LSB CHEMICAL LLC | Fail | State |
| 2025-10-23 | LSB CHEMICAL LLC | Pass | State |
| 2025-10-23 | LSB CHEMICAL LLC | Pass | State |
| 2025-05-01 | ENTERPRISE REFINED PRODUCTS COMPANY LLC - EL DORADO TERMINAL | Pass | State |
| 2025-04-09 | LANXESS CORPORATION - CENTRAL PLANT | Pass | State |
| 2025-04-01 | LANXESS CORPORATION-SOUTH PLANT | Pass | State |
| 2025-03-05 | LANXESS CORPORATION - CENTRAL PLANT | Pass | State |
| 2025-02-26 | ANTHONY FOREST PRODUCTS COMPANY, LLC | Pass | State |
| 2025-02-26 | ANTHONY FOREST PRODUCTS COMPANY, LLC | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.