EPA Air · stack tests by county and year
Air-emissions stack tests in Fremont County, Colorado, 2021
- 5Stack 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 Fremont County, Colorado during 2021. 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 Fremont County facility page.
Fremont County, Colorado, 2021
Air-emissions stack tests in Fremont County, other years
Air-emissions stack tests recorded in Fremont County, Colorado, 2021
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2021-08-31 | AMRIZE PORTLAND PLANT — high-priority violation on file | Pass | State |
| 2021-08-31 | AMRIZE PORTLAND PLANT — high-priority violation on file | Pass | State |
| 2021-06-17 | AMRIZE PORTLAND PLANT — high-priority violation on file | Fail | State |
| 2021-06-17 | AMRIZE PORTLAND PLANT — high-priority violation on file | Fail | State |
| 2021-03-31 | AMRIZE PORTLAND PLANT — high-priority violation on file | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.