EPA Air · stack tests by county and year
Air-emissions stack tests in Rio Blanco County, Colorado, 2025
- 30Stack 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 Rio Blanco County, Colorado during 2025. 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 Rio Blanco County facility page.
Rio Blanco County, Colorado, 2025
- Inspections 41
Air-emissions stack tests in Rio Blanco County, other years
Air-emissions stack tests recorded in Rio Blanco County, Colorado, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-12-16 | COLORADO INTERSTATE GAS CO - GREASEWOOD | Pass | State |
| 2025-11-20 | WILLIAMS FIELD - WILLOW CREEK GAS PLANT — high-priority violation on file | Pass | State |
| 2025-11-19 | WILLIAMS FIELD - WILLOW CREEK GAS PLANT — high-priority violation on file | Pass | State |
| 2025-11-19 | WILLIAMS FIELD - WILLOW CREEK GAS PLANT — high-priority violation on file | Pass | State |
| 2025-11-03 | ROCKIES EXPRESS PIPELINE LLC - MEEKER | Pass | State |
| 2025-11-03 | ROCKIES EXPRESS PIPELINE LLC - MEEKER | Pass | State |
| 2025-10-30 | UTAH GAS - WEST DRAGON TRAIL C.S. | Pending | State |
| 2025-10-29 | UTAH GAS - DRAGON TRAIL — high-priority violation on file | Pass | State |
| 2025-10-01 | UTAH GAS - DRAGON TRAIL 1121 | Pass | State |
| 2025-05-28 | UTAH GAS - DRAGON TRAIL — high-priority violation on file | Pass | State |
| 2025-05-28 | UTAH GAS - DRAGON TRAIL — high-priority violation on file | Pass | State |
| 2025-05-28 | UTAH GAS - DRAGON TRAIL — high-priority violation on file | Pass | State |
| 2025-05-28 | UTAH GAS - WEST DRAGON TRAIL C.S. | Pass | State |
| 2025-05-22 | BARGATH - RYAN GULCH COMPRESSOR STATION — high-priority violation on file | Pass | State |
| 2025-05-21 | BARGATH - RYAN GULCH COMPRESSOR STATION — high-priority violation on file | Pass | State |
| 2025-05-20 | BARGATH - RYAN GULCH COMPRESSOR STATION — high-priority violation on file | Pass | State |
| 2025-05-20 | BARGATH - RYAN GULCH COMPRESSOR STATION — high-priority violation on file | Pass | State |
| 2025-05-20 | BARGATH - RYAN GULCH COMPRESSOR STATION — high-priority violation on file | Pass | State |
| 2025-03-18 | NORTHWEST PIPELINE - RANGELY C.S. | Pass | State |
| 2025-03-14 | UGC MIDSTREAM - FOUNDATION CREEK CS — high-priority violation on file | Pass | State |
| 2025-03-07 | ROCKY MOUNTAIN NAT GAS - PICEANCE | Pass | State |
| 2025-02-26 | BARGATH - RYAN GULCH COMPRESSOR STATION — high-priority violation on file | Pass | State |
| 2025-02-21 | BARGATH - RYAN GULCH COMPRESSOR STATION — high-priority violation on file | Pass | State |
| 2025-02-20 | BARGATH - RYAN GULCH COMPRESSOR STATION — high-priority violation on file | Pass | State |
| 2025-02-19 | BARGATH - RYAN GULCH COMPRESSOR STATION — high-priority violation on file | Pass | State |
| 2025-02-19 | BARGATH - RYAN GULCH COMPRESSOR STATION — high-priority violation on file | Pass | State |
| 2025-02-19 | TEP ROCKY MTN - MAUTZ RANCH | N/A | State |
| 2025-02-18 | BARGATH - RYAN GULCH COMPRESSOR STATION — high-priority violation on file | Pass | State |
| 2025-02-13 | UTAH GAS - PARK CANYON WEST C.S. | Pass | State |
| 2025-01-29 | TEP ROCKY MTN - RG 41-18-297 WELL PAD | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.