EPA Air · by state
Sources with a high-priority air violation in Wyoming
- 9Facilities
A high-priority violation is the most serious class of Clean Air Act non-compliance an agency records against a stationary source. This is the STATUS EPA carries on the facility record today — whether the violation is unaddressed, addressed by the state, the local agency or EPA itself — not a history. The year-by-year record of when violations were determined is linked below.
Violations determined in Wyoming, by year
- 2026 — violations determined 5
- 2024 — violations determined 4
- 2023 — violations determined 4
- 2022 — violations determined 4
- 2021 — violations determined 4
- 2020 — violations determined 4
- 2019 — violations determined 4
- 2018 — violations determined 9
- 2017 — violations determined 10
Facilities
| Facility↑↓ | Classification↑↓ | HPV |
|---|---|---|
| BIG ISLAND MINE & REFINERY (SISECAM WYOMING LLC) | Major source | Yes |
| CASPER REFINERY (HF SINCLAIR CASPER REFINING LLC) | Major source | Yes |
| CHEYENNE PLANT (DYNO NOBEL INC) | Major source | Yes |
| HF SINCLAIR PARCO REFINING LLC | Major source | Yes |
| HOSPITAL WASTE INCINERATOR (BANNER HEALTH) | Minor source | Yes |
| JIM BRIDGER PLANT (PACIFICORP) | Major source | Yes |
| LARAMIE CEMENT PLANT (MOUNTAIN CEMENT CO.) | Major source | Yes |
| LARAMIE RIVER STATION (BASIN ELECTRIC POWER COOPERATIVE) | Major source | Yes |
| LOST CABIN GAS PLANT (CONTANGO RESOURCES, LLC.) | Major source | Yes |
Violation status as filed on the facility record. Figures from EPA’s ICIS-AIR download.
What this page shows
This page covers Clean Air Act facilities in the EPA air register for state WY that are high-priority violators. It lists 9 facilities in WY on the high-priority violator list, addressed or unaddressed. All facilities in WY total 687.