EPA Air · stack tests by county, year by year
Air-emissions stack tests in Weld County, Colorado, year by year
- 1,632Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Every year on record for Weld County, Colorado, most recent first. Each year page lists the events recorded at sources in the county that year.
Weld County, Colorado, by year
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.