Velarion Records

EPA Air · stack tests by county, year by year

Air-emissions stack tests in Pinal County, Arizona, year by year

A stack test measures what a source actually emits, at the stack, against the limit in its permit. Every year on record for Pinal County, Arizona, most recent first. Each year page lists the events recorded at sources in the county that year.

Pinal County, Arizona, by year

All sources in Pinal County →

Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.