| Business | Phone |
| Aaa Engineering & Foundation 402 Preston Ave, Pasadena 77503 | (713) 477-7573 |
| Civil Concepts Inc 3425 Federal Rd, Pasadena 77504 | (713) 947-6606 |
| General Motors 3500 S Richey, Pasadena 77504 | (713) 944-6700 |
| Matrix Engineering Inc Pasadena 77506 | (713) 473-4900 |
| Lhr Technologies 710 Southmore Ave, Pasadena 77502 | (713) 473-6545 |
| Jns Consulting Engineers 1149 Ellsworth Dr # 160, Pasadena 77506 | (713) 473-9764 |
| Municipal Engineering Co 4203 Argentina Cir, Pasadena 77504 | (713) 941-8988 |
| Murray Webb & Assoc 2605 E Beltway 8 S, Pasadena 77503 | (281) 487-4135 |