EPA Air · stack tests by county and year
Air-emissions stack tests in Delta County, Michigan, 2025
- 8Stack 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 Delta County, Michigan 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 Delta County facility page.
Delta County, Michigan, 2025
Air-emissions stack tests in Delta County, other years
Air-emissions stack tests recorded in Delta County, Michigan, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-08-14 | BILLERUD ESCANABA LLC | Pass | State |
| 2025-07-25 | BILLERUD ESCANABA LLC | Pass | State |
| 2025-07-23 | BILLERUD ESCANABA LLC | Pass | State |
| 2025-07-22 | BILLERUD ESCANABA LLC | Pass | State |
| 2025-06-17 | BILLERUD ESCANABA LLC | Fail | State |
| 2025-05-21 | BILLERUD ESCANABA LLC | Pass | State |
| 2025-05-20 | BILLERUD ESCANABA LLC | Pass | State |
| 2025-04-09 | BILLERUD ESCANABA LLC | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.