EPA Air · stack tests by county and year
Air-emissions stack tests in Jefferson County, Colorado, 2025
- 24Stack 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 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 Jefferson County facility page.
Jefferson County, Colorado, 2025
Air-emissions stack tests in Jefferson County, other years
Air-emissions stack tests recorded in Jefferson County, Colorado, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-12-12 | ARCOSA LWB LLC - LIGHTWEIGHT - BOULDER — high-priority violation on file | Pass | State |
| 2025-12-03 | COORSTEK INC - CLEAR CREEK VALLEY PLANT — high-priority violation on file | Fail | State |
| 2025-10-31 | PLAINS END, LLC | Pass | State |
| 2025-10-30 | PLAINS END, LLC | Pass | State |
| 2025-10-29 | PLAINS END, LLC | Pass | State |
| 2025-10-28 | PLAINS END, LLC | Pass | State |
| 2025-08-29 | ARCOSA LWB LLC - LIGHTWEIGHT - BOULDER — high-priority violation on file | Pass | State |
| 2025-05-09 | BALL METAL BEVERAGE CONTAINER CORP | Pass | State |
| 2025-05-08 | BALL METAL BEVERAGE CONTAINER CORP | Fail | State |
| 2025-05-06 | BALL METAL BEVERAGE CONTAINER CORP | Pass | State |
| 2025-05-06 | BALL METAL BEVERAGE CONTAINER CORP | Pass | State |
| 2025-05-06 | BALL METAL BEVERAGE CONTAINER CORP | Pass | State |
| 2025-05-06 | BALL METAL BEVERAGE CONTAINER CORP | Pass | State |
| 2025-05-06 | BALL METAL BEVERAGE CONTAINER CORP | Pass | State |
| 2025-05-06 | BALL METAL BEVERAGE CONTAINER CORP | Pass | State |
| 2025-05-06 | BALL METAL BEVERAGE CONTAINER CORP | Pass | State |
| 2025-04-25 | PLAINS END, LLC | N/A | State |
| 2025-04-24 | PLAINS END, LLC | N/A | State |
| 2025-04-23 | PLAINS END, LLC | Pass | State |
| 2025-04-22 | PLAINS END, LLC | N/A | State |
| 2025-04-21 | PLAINS END, LLC | N/A | State |
| 2025-04-09 | TERUMO BCT STERILIZATION SCVS - LAKEWOOD | Pass | State |
| 2025-02-28 | ROCKY MOUNTAIN BOTTLE CO - 10619 W 50TH | Pass | State |
| 2025-01-22 | ROCKY MOUNTAIN BOTTLE CO - 10619 W 50TH | N/A | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.