EPA Air · stack tests by county and year
Air-emissions stack tests in Coconino County, Arizona, 2022
- 3Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row below is one stack test recorded against a source in Coconino County, Arizona during 2022. A facility can appear several times: this is the year’s record of what happened, not a list of places. The sources themselves are on the Coconino County facility page.
Coconino County, Arizona, 2022
Air-emissions stack tests in Coconino County, other years
Air-emissions stack tests recorded in Coconino County, Arizona, 2022
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2022-08-24 | EL PASO NATURAL GAS CO - WILLIAMS COMPRESSOR STATION | Pass | State |
| 2022-02-17 | EL PASO NATURAL GAS CO - FLAGSTAFF COMPRESSOR STATION | Pass | State |
| 2022-02-16 | EL PASO NATURAL GAS CO - WILLIAMS COMPRESSOR STATION | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.