EPA Air · stack tests by county and year
Air-emissions stack tests in Greenlee County, Arizona, 2026
- 3Stack 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 Greenlee County, Arizona 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 Greenlee County facility page.
Air-emissions stack tests in Greenlee County, other years
Air-emissions stack tests recorded in Greenlee County, Arizona, 2026
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2026-05-11 | FREEPORT-MCMORAN - MORENCI | Pass | State |
| 2026-04-02 | FREEPORT-MCMORAN - MORENCI | Pass | State |
| 2026-03-04 | FREEPORT-MCMORAN - MORENCI | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.
What this page shows
This page covers Clean Air Act facilities in the EPA air register with stack tests in Greenlee county, AZ, for 2026. It lists 3 stack tests recorded in 2026.