| Business | Phone |
| Applied Ecological Svc 550 N Main St 302, Logan 84321 | (435) 753-7006 |
| Bio-Resources Inc 135 E Center St, Logan 84321 | (435) 753-5370 |
| Bio-West Inc 1063 W 1400 N, Logan 84321 | (435) 752-4202 |
| Cirrus Ecological Solution 965 S 100 W 200, Logan 84321 | (435) 787-1490 |
| Crs Consulting Engineers 160 N Main St # 202, Logan 84321 | (435) 753-6565 |
| Earthfax Development Corp 1770 Research Park Way 190, Logan 84341 | (435) 787-2743 |
| Ecosystems Research Institute 975 S State Highway 89-91, Logan 84321 | (435) 752-2580 |
| Environmental Health Svc 1135 Windsor Dr, Logan 84321 | (435) 752-4212 |
| Phytokinetics Inc 1770 Research Park Way # 110, Logan 84341 | (435) 750-0985 |
| Pioneer Environmental Svc 980 W 1800 S, Logan 84321 | (435) 753-0033 |
| Wetland Resources 182 E 300 N, Logan 84321 | (435) 753-4517 |