EPA Air · stack tests by county and year
Air-emissions stack tests in St. Charles County, Missouri, 2024
- 6Stack 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 St. Charles County, Missouri during 2024. 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 St. Charles County facility page.
St. Charles County, Missouri, 2024
- Inspections 12
Air-emissions stack tests in St. Charles County, other years
Air-emissions stack tests recorded in St. Charles County, Missouri, 2024
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2024-08-13 | NEW FRONTIER MATERIALS (OLD FRED WEBER INC-NEW MELLE QUARRY) | Pass | State |
| 2024-08-13 | NEW FRONTIER MATERIALS (OLD FRED WEBER INC-NEW MELLE QUARRY) | Pass | State |
| 2024-08-13 | NEW FRONTIER MATERIALS (OLD FRED WEBER INC-NEW MELLE QUARRY) | Pass | State |
| 2024-02-29 | GENERAL MOTORS LLC | N/A | State |
| 2024-02-29 | GENERAL MOTORS LLC | N/A | State |
| 2024-01-08 | AMEREN MISSOURI - SIOUX ENERGY CENTER | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.