| Business | Phone |
| Double C Ltd 10245 Oilfields Rd, Bakersfield 93308 | (661) 392-0300 |
| Alpha Minerals & Chemicals Llc 220 Industrial St, Bakersfield 93307 | (661) 377-0078 |
| Concentric Engineering 3111 Landco Dr, Bakersfield 93308 | (661) 861-9417 |
| Dennis Engineering Group Llc 7301 District Blvd, Bakersfield 93313 | (661) 837-2613 |
| Eden Engineering 3033 Wilson Rd, Bakersfield 93304 | (661) 835-1900 |
| Facility Engineering Consult 7907 Camino Media, Bakersfield 93309 | (661) 831-7563 |
| Project View 5110 Glacier Canyon Ct, Bakersfield 93313 | (661) 398-8453 |