EPA Air · inspections by county and year
Air-emissions inspections in Natrona County, Wyoming, 2025
- 7Inspections
A compliance evaluation is the on-site or file review a state, local or federal air agency records against a permitted source. Each row below is one inspection recorded against a source in Natrona County, Wyoming 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 Natrona County facility page.
Natrona County, Wyoming, 2025
- Stack tests 22
Air-emissions inspections in Natrona County, other years
Air-emissions inspections recorded in Natrona County, Wyoming, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-09-29 | MILLS COMPLEX (BLACK HILLS BENTONITE LLC) | FCE On-Site | State |
| 2025-09-25 | WALTMAN 16 (HILCORP ENERGY COMPANY) | FCE On-Site | State |
| 2025-09-24 | HOSPITAL WASTE INCINERATOR (BANNER HEALTH) — high-priority violation on file | FCE On-Site | State |
| 2025-09-23 | CASPER CRUDE TO RAIL (CASPER CRUDE TO RAIL, LLC) | FCE On-Site | State |
| 2025-09-10 | CASPER SOLID WASTE MANAGEMENT FACILITY (CITY OF CASPER SOLID WASTE DIVISION) | FCE On-Site | State |
| 2025-09-04 | AIRPORT (NATRONA COUNTY INTERNATIONAL AIRPORT) | FCE On-Site | State |
| 2025-08-27 | CASPER REFINERY (HF SINCLAIR CASPER REFINING LLC) — high-priority violation on file | FCE On-Site | State |
Dates as filed by the agency that recorded the inspection. Figures from EPA’s ICIS-AIR download.