| Business | Phone |
| Atkinson Contractors Inc 6921 Chabot Rd, Oakland 94618 | (510) 653-4265 |
| Downrite Demolition & Excvtn 1407 Webster St, Oakland 94612 | (510) 628-0618 |
| Graniterock Oakland 94621 | (510) 729-5075 |
| Impossible Excavating & Engnrg 850 5th Ave, Oakland 94606 | (510) 763-6501 |
| Kent Fisher Excavating Oakland 94612 | (510) 965-1153 |
| Peak Engineering Inc 477 Roland Way, Oakland 94621 | (510) 553-1533 |
| Perine Excavating Gen Contr 641 Clara St, Oakland 94603 | (510) 638-2233 |
| D L Drummonds Oakland 94601 | (510) 715-6621 |