EPA Air · stack tests by county and year
Air-emissions stack tests in Ellis County, Texas, 2025
- 11Stack 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 Ellis County, Texas 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 Ellis County facility page.
Ellis County, Texas, 2025
Air-emissions stack tests in Ellis County, other years
Air-emissions stack tests recorded in Ellis County, Texas, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-09-12 | OWENS CORNING INSULATING SYSTEMS WAXAHACHIE PLANT | Pass | State |
| 2025-09-12 | OWENS CORNING INSULATING SYSTEMS WAXAHACHIE PLANT | Pass | State |
| 2025-09-12 | HOWARD COMPRESSOR STATION | Pass | State |
| 2025-08-29 | MIDLOTHIAN FACILITY | Pass | State |
| 2025-07-29 | MIDLOTHIAN FACILITY | Pass | State |
| 2025-05-16 | MIDLOTHIAN FACILITY | Pass | State |
| 2025-05-16 | HOLCIM TEXAS | Pass | State |
| 2025-05-02 | GERDAU MIDLOTHIAN PLANT | Pass | State |
| 2025-02-27 | ASH GROVE CEMENT | Pass | State |
| 2025-02-26 | MIDLOTHIAN FACILITY | Pass | State |
| 2025-02-26 | MIDLOTHIAN FACILITY | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.