| Business | Phone |
| Omni Environmental 2101 Donley Dr 100, Austin 78758 | (512) 258-9114 |
| Austin Environmental Inc Austin 78731 | (512) 587-8036 |
| Jenkins Environmental Consult 7756 Northcross Dr 103, Austin 78757 | (512) 451-3385 |
| Environmental Consultancy 107 Ranch Road 620 S 102-, Austin 78734 | (512) 266-1368 |