| Business | Phone |
| Diamond Services 3860 Industrial Way, Benicia 94510 | (707) 751-5900 |
| G S Carrell Construction 326 Weldon Ct, Benicia 94510 | (707) 745-1099 |
| Sundquist Engineering 440 Raymond Dr, Benicia 94510 | (707) 745-3519 |
| Underground Construction Co 5145 Industrial Way, Benicia 94510 | (707) 746-8800 |