| Business | Phone |
| Namdar Structural Engineering 1223 University Ave # 210, Riverside 92507 | (951) 682-9025 |
| Pbs & J 10370 Hemet St # 200, Riverside 92503 | (951) 341-6380 |
| Cmj Engineering Inc 12155 Magnolia Ave, Riverside 92503 | (951) 509-0057 |
| Craig Consulting Group 2050 Elsinore Rd, Riverside 92506 | (951) 637-1926 |
| Crs Engineering Inc Riverside 92508 | (951) 789-5810 |
| Ch2m Hill 3550 Vine St # 320, Riverside 92507 | (951) 276-3003 |
| Energy Resource Institute 647 Main St, Riverside 92501 | (951) 686-2606 |
| Geotechnics Inc 1130 Palmyrita Ave # 330a, Riverside 92507 | (951) 222-0206 |
| I W Engineering Inc 3741 Merced Dr, Riverside 92503 | (951) 687-2929 |
| John W Best Jr Consltng Engr 6956 Indiana Ave # 13, Riverside 92506 | (951) 778-9101 |
| Pacific Engineering Group 1208 Santorini Rd, Riverside 92506 | (951) 780-1221 |
| Reo Engineering 11711 Sterling Ave # H, Riverside 92503 | (951) 343-0890 |
| Canyon Consulting 4130 Flat Rock Dr # 130, Riverside 92505 | (951) 343-8686 |
| Sdh & Assoc Inc 5225 Canyon Crest Dr, Riverside 92507 | (951) 788-2344 |
| T Y Lin Intl 3550 Vine St # 120, Riverside 92507 | (951) 788-4688 |
| Trip Hord Assoc 5029 Lamart Dr # E, Riverside 92507 | (951) 684-9615 |