| Business | Phone |
| Robertson-Bryan 9888 Kent St, Elk Grove 95624 | (916) 687-7799 |
| Rose's Engineering Geology Inc 9152 Elk Grove Blvd, Elk Grove 95624 | (916) 686-5445 |
| H2o Group 9074 Elk Grove Blvd # 3, Elk Grove 95624 | (916) 686-1598 |
| Voss Civil Engineers 8630 Lupone Ct, Elk Grove 95624 | (916) 681-3532 |