EPA Air · stack tests by state, industry and year
Mining and quarrying (NAICS 2122): stack tests in Arizona, 2025
- 14Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row is one stack test recorded during 2025 at a Arizona source whose primary industry code is NAICS 2122. A facility filing more than one industry code is counted under the first one on its record.
Mining and quarrying (NAICS 2122) in Arizona, other years
Other industries in Arizona, 2025
- Utilities (NAICS 2211) 34
- Computer and electronic product manufacturing (NAICS 3344) 10
- Nonmetallic mineral product manufacturing (NAICS 3273) 10
- Pipeline transportation (NAICS 4862) 9
- Merchant wholesalers, nondurable goods (NAICS 4247) 6
- Nonmetallic mineral product manufacturing (NAICS 3274) 6
- Primary metal manufacturing (NAICS 3314) 5
- Primary metal manufacturing (NAICS 3311) 4
- Primary metal manufacturing (NAICS 3313) 3
- Data processing and hosting (NAICS 5182) 3
Air-emissions stack tests recorded in Arizona, 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2025-12-17 | PINTO VALLEY MINE | MIAMI, Gila, AZ | Pass | State |
| 2025-12-17 | FREEPORT-MCMORAN - MORENCI | MORENCI, Greenlee, AZ | Pass | State |
| 2025-11-21 | FREEPORT-MCMORAN - MORENCI | MORENCI, Greenlee, AZ | Pass | State |
| 2025-10-06 | FREEPORT-MCMORAN - MORENCI | MORENCI, Greenlee, AZ | Fail | State |
| 2025-09-04 | MOSS MINE | BULLHEAD CITY, Mohave, AZ | Pass | State |
| 2025-07-28 | FREEPORT-MCMORAN - SAFFORD OPERATIONS | SAFFORD, Graham, AZ | Pass | State |
| 2025-07-18 | FREEPORT-MCMORAN - MORENCI | MORENCI, Greenlee, AZ | Pass | State |
| 2025-06-26 | FREEPORT-MCMORAN - MORENCI | MORENCI, Greenlee, AZ | Fail | State |
| 2025-06-11 | FREEPORT-MCMORAN - MORENCI | MORENCI, Greenlee, AZ | Pass | State |
| 2025-04-24 | FREEPORT-MCMORAN - MORENCI | MORENCI, Greenlee, AZ | Pass | State |
| 2025-04-03 | FREEPORT-MCMORAN - MORENCI | MORENCI, Greenlee, AZ | Pass | State |
| 2025-03-20 | FREEPORT-MCMORAN - SAFFORD OPERATIONS | SAFFORD, Graham, AZ | Pass | State |
| 2025-03-20 | FREEPORT-MCMORAN - SAFFORD OPERATIONS | SAFFORD, Graham, AZ | Pass | State |
| 2025-01-07 | FREEPORT-MCMORAN - SAFFORD OPERATIONS | SAFFORD, Graham, AZ | Pass | State |
Primary NAICS code as filed on the facility record; dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.