EPA Air · stack tests by county, year by year

Air-emissions stack tests in Custer County, South Dakota, year by year

• 3Stack tests

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

Custer County, South Dakota, by year

• 2022 3

All sources in Custer County →

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