EPA Air · stack tests by county, year by year
Air-emissions stack tests in Pima County, Arizona, year by year
- 70Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Every year on record for Pima County, Arizona, most recent first. Each year page lists the events recorded at sources in the county that year.
Pima County, Arizona, by year
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.