| Business | Phone |
| Apex Geotechnology Inc 9883 Pacific Heights Blvd # G, San Diego 92121 | (858) 625-2420 |
| Atc Assoc Inc 9620 Chesapeake Dr # 203, San Diego 92123 | (858) 569-0692 |
| Cca Southland 2061 Alta View Dr, San Diego 92139 | (619) 267-2890 |
| Christian Wheeler Engineering 4925 Mercury St, San Diego 92111 | (858) 496-9760 |
| Foster Geotechnical 1660 Hotel Cir N # 304, San Diego 92108 | (619) 688-2400 |
| Haley & Aldrich Inc 9040 Friars Rd # 220, San Diego 92108 | (619) 280-9210 |
| American Geotechnical 5764 Pacific Center Blvd # 112, San Diego 92121 | (858) 450-4040 |
| Salar & Assoc 555 W Beech St # 303, San Diego 92101 | (619) 232-9944 |
| Psi 6867 Nancy Ridge Dr # E, San Diego 92121 | (858) 455-0544 |
| Pacific Soils Engeneering Inc 7715 Convoy Ct, San Diego 92111 | (858) 560-1713 |
| Geocon Inc 6960 Flanders Dr, San Diego 92121 | (858) 558-6900 |
| Geosyntec Consultants 11305 Rancho Bernardo Rd # 101, San Diego 92127 | (858) 674-6559 |
| Geotechnical Exploration Inc 7420 Trade St, San Diego 92121 | (858) 549-7222 |
| Geotechnics 9245 Activity Rd # 103, San Diego 92126 | (858) 536-1000 |
| Landtech Soils Engineering Inc San Diego 92111 | (858) 505-9338 |
| K2 Engineering Inc 12595 Ragweed St, San Diego 92129 | (858) 484-2347 |