EPA Air · stack tests by state and year
Air-emissions stack tests in Arizona, 2025
- 116Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Every stack test below was recorded against a source in Arizona during 2025; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Counties in Arizona, 2025
- Maricopa County 53
- Mohave County 9
- Yavapai County 8
- Greenlee County 8
- Cochise County 7
- Apache County 6
- Graham County 6
- Gila County 6
- La Paz County 3
- Pima County 3
- Navajo County 3
Arizona, other years
Air-emissions stack tests recorded in Arizona, 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2025-01-29 | CHOLLA GENERATING STATION | JOSEPH CITY, Navajo, AZ | Pass | State |
| 2025-01-22 | GOLD BOND BUILDING PRODUCTS — high-priority violation on file | MARICOPA COUNTY, Maricopa, AZ | Pass | Local |
| 2025-01-22 | GOLD BOND BUILDING PRODUCTS — high-priority violation on file | MARICOPA COUNTY, Maricopa, AZ | Pass | Local |
| 2025-01-22 | GOLD BOND BUILDING PRODUCTS — high-priority violation on file | MARICOPA COUNTY, Maricopa, AZ | Pass | Local |
| 2025-01-22 | GOLD BOND BUILDING PRODUCTS — high-priority violation on file | MARICOPA COUNTY, Maricopa, AZ | Pass | Local |
| 2025-01-22 | GOLD BOND BUILDING PRODUCTS — high-priority violation on file | MARICOPA COUNTY, Maricopa, AZ | Pass | Local |
| 2025-01-22 | GOLD BOND BUILDING PRODUCTS — high-priority violation on file | MARICOPA COUNTY, Maricopa, AZ | Pass | Local |
| 2025-01-16 | CALPORTLAND - RILLITO CEMENT PLANT | MARANA, Pima, AZ | Pass | State |
| 2025-01-16 | CMC STEEL FABRICATORS | MARICOPA COUNTY, Maricopa, AZ | Pass | Local |
| 2025-01-15 | EL PASO NATURAL GAS - WILLCOX COMPRESSOR STATION | WILLCOX, Cochise, AZ | Pass | State |
| 2025-01-09 | DRAKE CEMENT- DRAKE ROAD SITE — high-priority violation on file | PAULDEN, Yavapai, AZ | Pass | State |
| 2025-01-09 | YUMA COGENERATION ASSOCIATES | YUMA, Yuma, AZ | Pass | State |
| 2025-01-09 | BALL METAL BEVERAGE CONTAINER CORPORATION — high-priority violation on file | MARICOPA COUNTY, Maricopa, AZ | Pass | Local |
| 2025-01-08 | VULCAN MATERIALS — high-priority violation on file | MARICOPA COUNTY, Maricopa, AZ | Pass | Local |
| 2025-01-07 | FREEPORT-MCMORAN - SAFFORD OPERATIONS | SAFFORD, Graham, AZ | Pass | State |
| 2025-01-07 | STONE APPLICATIONS | MARICOPA COUNTY, Maricopa, AZ | Pass | Local |
PreviousPage 1Page 2 of 2
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.