EPA Air · stack tests by county, year by year
Air-emissions stack tests in Stephens County, Oklahoma, year by year
- 675Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Every year on record for Stephens County, Oklahoma, most recent first. Each year page lists the events recorded at sources in the county that year.
Stephens County, Oklahoma, by year
All sources in Stephens County →
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.