| Business | Phone |
| Bruin Geotechnical Svc Inc 1817 E Avenue Q # A2, Palmdale 93550 | (661) 273-9078 |
| Lan Engineering 950 E Palmdale Blvd # E, Palmdale 93550 | (661) 265-8599 |
| Us Army Corps Of Engineers 40015 Sierra Hwy # B145, Palmdale 93550 | (661) 265-7222 |
| Mmm Max-Well Engineering Inc 41230 11th St W # C, Palmdale 93551 | (661) 267-1630 |