| Business | Phone |
| Bks Environmental Assoc Inc 612 N Us Highway 14-16 F, Gillette 82716 | (307) 686-0800 |
| Environmental Solutions Inc 2503 Greenway Dr, Gillette 82716 | (307) 682-2696 |
| Thunderbird Wildlife Consltng 5303 Van Ripper St, Gillette 82718 | (307) 686-6178 |
| Powder River Water 113 S Gillette Ave # 207, Gillette 82716 | (307) 685-1835 |