Campbell County contains 178 EPA-regulated facilities, 8 of which are currently flagged for significant noncompliance. The county also hosts 0 Superfund sites and 8 TRI chemical reporters. EPA has assessed $5.3M in lifetime penalties and TRI reporters disclosed roughly 3.1M lb of on-site releases. That facility count is well above the Wyoming state average of 68 per county.
| Facility | City | On-site (lb) | Status |
|---|---|---|---|
| Black Hills Corp - Neil Simpson Complex | Gillette | 1.7M | Compliant |
| Basin Electric Power Cooperative-Dry Fork Station | Gillette | 1.3M | Compliant |
| Hilight Gas Plant | Gillette | 16.5k | Compliant |
| Wyodak Plant | Gillette | 9.2k | Compliant |
| 50 Buttes | Gillette | 5.2k | Compliant |
| Nelson Brothers Mining Services Llc | Gillette | 70 | Compliant |
| Buckskin Mining Co - Buckskin Mine | Gillette | 6 | Compliant |
| Facility | City | Penalties | Last Inspected |
|---|---|---|---|
| Rocky Point Field, Switzer Draw Tank Battery | (Unknown City) | $0 | 2024-02-06 |
| Ccsd Aquatic Center | Gillette | $0 | |
| Rocky Point Field, Central Tank Battery | (Unknown City) | $0 | 2024-02-06 |
| Grwsp Priority Vi Eagle Ridge, People's Isd | Gillette | $0 | |
| Alpha Coal West Inc. Belle Ayr Mine | Gillette | $0 | 2025-09-23 |
| Baytown 21-27 Discharge Facility | (Unknown City) | $0 | 2023-06-13 |
| Baytown 32-29 Discharge Facility | (Unknown City) | $0 | 2023-06-26 |
| Baytown 32-28 Discharge Facility | (Unknown City) | $0 | 2023-06-26 |