EPA Air · stack tests by county and year
Air-emissions stack tests in Apache County, Arizona, 2025
- 6Stack 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 Apache County, Arizona 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 Apache County facility page.
Apache County, Arizona, 2025
Air-emissions stack tests in Apache County, other years
Air-emissions stack tests recorded in Apache County, Arizona, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-09-12 | CORONADO GENERATING PLANT | Pass | State |
| 2025-06-27 | TUCSON ELECTRIC POWER - SPRINGERVILLE GENERATING STATION | Pass | State |
| 2025-06-16 | TUCSON ELECTRIC POWER - SPRINGERVILLE GENERATING STATION | Pass | State |
| 2025-06-11 | TUCSON ELECTRIC POWER - SPRINGERVILLE GENERATING STATION | Pass | State |
| 2025-06-07 | TUCSON ELECTRIC POWER - SPRINGERVILLE GENERATING STATION | Pass | State |
| 2025-03-04 | CORONADO GENERATING PLANT | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.
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