EPA fines in Wyoming
20 cases at facilities in Wyoming totalling $682,550.00 in civil penalties assessed, from settlements entered November 12, 2021 – November 12, 2026.
| Company / respondent | Case | Law | Civil penalty assessed | Settlement entered | Source |
|---|---|---|---|---|---|
| DYNO NOBEL, INC. � CHEYENNE PLANT DYNO NOBEL INC. - CHEYENNE — Cheyenne, WY | DYNO NOBEL INC-CHEYENNE PLANT Case 08-2024-0069 | CAA | $394,906.00 | 2024-03-08 | ECHO case report |
| Merit Energy - Spring Creek MERIT ENERGY - PARK COUNTY — Park, WY | Merit Energy - Spring Creek Case 08-2025-0148 | CWA | $140,000.00 | 2025-08-26 | ECHO case report |
| Nature Gas Import and Export NATURE GAS IMPORT AND EXPORT, INC. — Casper, WY | Nature Gas Import and Export Case HQ-2023-8430 | CAA | $84,546.00 | 2023-06-23 | ECHO case report |
| Dyno Nobel, Inc. DYNO NOBEL INC. - CHEYENNE — Cheyenne, WY | DYNO NOBEL INC-CHEYENNE PLANT Case 08-2023-0004 | EPCRA | $20,352.00 | 2022-11-06 | ECHO case report |
| CHEMTRADE REFINERY SERVICES INC - RIVERTON PLANT CHEMTRADE REFINERY SERVICES INC - RIVERTON PLANT — Riverton, WY | CHEMTRADE REFINERY SERVICES INC - RIVERTON PLANT Case 08-2023-0027 | RCRA | $8,750.00 | 2022-11-07 | ECHO case report |
| Richardson Operating RICHARDSON OPERATING — Fremont County, WY | Richardson Operating Case 08-2024-0072 | CWA | $5,000.00 | 2024-05-13 | ECHO case report |
| Ovintiv USA Inc. WY20831-04394 TRIBAL PN 16-34 — Fremont, WY | Ovintiv USA Inc. CAFO Case 08-2025-0017 | SDWA | $4,278.00 | 2024-12-16 | ECHO case report |
| Airtime Aerial, Kevin Hefley KEVIN HEFLEY, AIRTIME AERIAL — Pine Bluffs, WY | Airtime Aerial, Kevin Hefley Case 08-2022-0107 | FIFRA | $4,048.00 | 2022-07-13 | ECHO case report |
| Bailey Oil Company BAILEY OIL COMPANY — Riverton, WY | Bailey Oil Company Case 08-2024-0039 | CWA | $3,656.00 | 2023-12-18 | ECHO case report |
| Leisure Valley, Inc LEISURE VALLEY INC/ STAR VALLEY RV PARK — WY | LEISURE VALLEY INC/ STAR VALLEY RV PARK Case 08-2024-0020 | SDWA | $2,500.00 | 2024-08-22 | ECHO case report |
| Total of all 20 cases in this group | $682,550.00 | ||||
Showing the top 10 of 20 cases in this group. Group total (all 20): $682,550.00 in civil penalties assessed. The full list and CSV export come with the paid plan — see Pricing.