EPA Air · violations by county and year
High-priority air violations in Cheyenne County, Colorado, 2025
- 6Violations
A high-priority violation is the most serious class of Clean Air Act non-compliance an agency records against a source; a federally reportable violation is the next step down in severity. Each row below is one violation recorded against a source in Cheyenne 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 Cheyenne County facility page.
Cheyenne County, Colorado, 2025
- Inspections 34
High-priority air violations in Cheyenne County, other years
High-priority air violations recorded in Cheyenne County, Colorado, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-12-04 | MULL DRILLING - NWAU #2 TANK BATTERY — high-priority violation on file | Earliest FRV determination | State |
| 2025-07-22 | MULL DRILLING - MUSF #2 CRUDE OIL BAT — high-priority violation on file | Earliest FRV determination | State |
| 2025-06-26 | CITATION OIL - MOUNT PEARL FACILITY | Earliest FRV determination | State |
| 2025-06-26 | CITATION O & G - MPU 33-30 | Earliest FRV determination | State |
| 2025-06-26 | CITATION OIL & GAS - BLEDSOE 13-12 | Earliest FRV determination | State |
| 2025-06-26 | CITATION OIL ARAPAHOE SECTION 9 | Earliest FRV determination | State |
Dates as filed by the agency that recorded the violation. Figures from EPA’s ICIS-AIR download.