Laramie County contains 156 EPA-regulated facilities, 6 of which are currently flagged for significant noncompliance. The county also hosts 1 Superfund sites and 7 TRI chemical reporters. EPA has assessed $5.8M in lifetime penalties and TRI reporters disclosed roughly 6.5M lb of on-site releases. That facility count is well above the Wyoming state average of 68 per county.
| Site | City | Status |
|---|---|---|
| F E Warren Air Force Base | Cheyenne | Cleanup underway |
| Facility | City | On-site (lb) | Status |
|---|---|---|---|
| Dyno Nobel Inc-Cheyenne Plant | Cheyenne | 6.5M | Sig. violation |
| Cheyenne Renewable Diesel Company | Cheyenne | 886 | Compliant |
| Knife River Cheyenne | Cheyenne | 121 | Compliant |
| Vae Nortrak Cheyenne Inc/North America Inc | Cheyenne | 12 | Compliant |
| U S Air Force Wyoming Air National Guard | Cheyenne | 1 | Compliant |
| Facility | City | Penalties | Last Inspected |
|---|---|---|---|
| Dyno Nobel Inc-Cheyenne Plant | Cheyenne | $415.3k | 2025-08-27 |
| Tri-State Oil Reclaimers | Cheyenne | $55.8k | 2025-09-24 |
| Pine Bluffs Wastewater Lagoon | Pine Bluffs | $0 | 2024-03-13 |
| Gold King Corp., Ck Gold Mine | (Unknown City) | $0 | |
| Round Top & Sherard Wtp's | Cheyenne | $0 | 2023-08-17 |
| Champ Site 2 (Aka Sharptail Developer; 12-1-2019) | Albin | $0 | 2025-08-29 |