EPA Air · stack tests by county and year
Air-emissions stack tests in Jefferson County, Colorado, 2026
- 16Stack 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 Jefferson County, Colorado during 2026. 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 Jefferson County facility page.
Jefferson County, Colorado, 2026
- Inspections 21
Air-emissions stack tests in Jefferson County, other years
Air-emissions stack tests recorded in Jefferson County, Colorado, 2026
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2026-07-28 | MOLSON COORS USA LLC - GOLDEN BREWERY — high-priority violation on file | Pending | State |
| 2026-07-28 | MOLSON COORS USA LLC - GOLDEN BREWERY — high-priority violation on file | Pending | State |
| 2026-07-09 | COORSTEK INC - CLEAR CREEK VALLEY PLANT — high-priority violation on file | N/A | State |
| 2026-06-26 | COORSTEK INC - CLEAR CREEK VALLEY PLANT — high-priority violation on file | Fail | State |
| 2026-06-17 | COORSTEK INC - CLEAR CREEK VALLEY PLANT — high-priority violation on file | N/A | State |
| 2026-06-17 | COORSTEK INC - CLEAR CREEK VALLEY PLANT — high-priority violation on file | N/A | State |
| 2026-05-01 | PLAINS END, LLC | Pass | State |
| 2026-04-30 | PLAINS END, LLC | Pass | State |
| 2026-04-29 | PLAINS END, LLC | Pass | State |
| 2026-04-28 | PLAINS END, LLC | Pass | State |
| 2026-04-27 | PLAINS END, LLC | Pass | State |
| 2026-03-17 | ALLIED WASTE SYSTEMS-FOOTHILLS LANDFILL | Pass | State |
| 2026-03-03 | BALL METAL BEVERAGE CONTAINER CORP | Pass | State |
| 2026-02-12 | COORSTEK INC - CLEAR CREEK VALLEY PLANT — high-priority violation on file | Fail | State |
| 2026-02-11 | COORSTEK INC - CLEAR CREEK VALLEY PLANT — high-priority violation on file | Fail | State |
| 2026-02-10 | COORSTEK INC - CLEAR CREEK VALLEY PLANT — high-priority violation on file | Fail | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.