| Business | Phone |
| Terrill Gilvin Inc Po Box 9027, Amarillo 79105 | (806) 944-5200 |
| Lopez Garcia Group 301 S Polk St, Amarillo 79101 | (806) 376-4522 |
| Abrahamson & Assoc 905 S Fillmore St 210, Amarillo 79101 | (806) 372-2287 |
| Amarillo Testing & Engineering 1113 N Mcmasters St, Amarillo 79106 | (806) 374-2756 |
| Brandt Engineers 4537 Canyon Dr, Amarillo 79110 | (806) 353-7233 |