EPA Air · violations by county and year
High-priority air violations in North Slope County, Alaska, 2025
- 5Violations
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 North Slope County, Alaska 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 North Slope County facility page.
North Slope County, Alaska, 2025
- Inspections 225
- Stack tests 21
High-priority air violations in North Slope County, other years
High-priority air violations recorded in North Slope County, Alaska, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-09-30 | HILCORP ALASKA, LLC / CRUDE OIL TOPPING UNIT (COTU) | Earliest FRV determination | State |
| 2025-09-21 | HILCORP ALASKA, LLC / NIKAITCHUQ DEVELOPMENT | Earliest FRV determination | State |
| 2025-09-18 | HILCORP ALASKA, LLC / GATHERING CENTER #1 (GC 1) | Earliest FRV determination | State |
| 2025-06-17 | NORTH SLOPE BOROUGH / WAINWRIGHT POWER PLANT | Earliest FRV determination | State |
| 2025-03-10 | HILCORP ALASKA, LLC / MILNE POINT PRODUCTION FACILITY (MPU) | Earliest FRV determination | State |
Dates as filed by the agency that recorded the violation. Figures from EPA’s ICIS-AIR download.