| Business | Phone |
| Mwh Inc 10010 San Pedro Ave 390, San Antonio 78216 | (210) 308-2820 |
| Scs Engineering Inc 9603 Barcelona St, San Antonio 78230 | (210) 340-7622 |
| Amec Earth & Environmental 17319 San Pedro Ave 207, San Antonio 78232 | (210) 699-6595 |
| Medina Consulting 6391 De Zavala Rd 113a, San Antonio 78249 | (210) 694-4545 |