EPA Air · stack tests by county and year
Air-emissions stack tests in Harrison County, Mississippi, 2025
- 20Stack 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 Harrison County, Mississippi 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 Harrison County facility page.
Harrison County, Mississippi, 2025
Air-emissions stack tests in Harrison County, other years
Air-emissions stack tests recorded in Harrison County, Mississippi, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-10-15 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | Pass | State |
| 2025-10-15 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | Pass | State |
| 2025-10-15 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | Pass | State |
| 2025-10-15 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | Pass | State |
| 2025-10-15 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | Pass | State |
| 2025-10-15 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | Pass | State |
| 2025-04-09 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | Pass | State |
| 2025-04-09 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | Pass | State |
| 2025-04-09 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | Pass | State |
| 2025-04-09 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | Pass | State |
| 2025-04-08 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | Pass | State |
| 2025-04-08 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | Pass | State |
| 2025-04-08 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | Pass | State |
| 2025-04-08 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | Pass | State |
| 2025-04-08 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | Pass | State |
| 2025-02-19 | MISSISSIPPI POWER COMPANY, PLANT JACK WATSON | Pass | State |
| 2025-02-19 | MISSISSIPPI POWER COMPANY, PLANT JACK WATSON | Pass | State |
| 2025-02-18 | MISSISSIPPI POWER COMPANY, PLANT JACK WATSON | Pass | State |
| 2025-02-18 | MISSISSIPPI POWER COMPANY, PLANT JACK WATSON | Pass | State |
| 2025-02-17 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.