EPA Air · stack tests by county and year
Air-emissions stack tests in Mason County, Illinois, 2018
- 4Stack 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 Mason County, Illinois during 2018. 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 Mason County facility page.
Air-emissions stack tests in Mason County, other years
- 2017 5
Air-emissions stack tests recorded in Mason County, Illinois, 2018
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2018-07-17 | DYNEGY MIDWEST GENERATION LLC | Pass | State |
| 2018-05-24 | DYNEGY MIDWEST GENERATION LLC | Pass | State |
| 2018-04-12 | DYNEGY MIDWEST GENERATION LLC | Pass | State |
| 2018-01-23 | DYNEGY MIDWEST GENERATION LLC | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.