| Business | Phone |
| Amador Mechanical Inc Plymouth 95669 | (209) 245-3850 |
| Beebe Aggregates Engineering 1515 Long Gate Rd, Plymouth 95669 | (209) 245-6641 |
| Rob Cowan Construction 12650 Shenandoah Rd, Plymouth 95669 | (209) 245-6505 |
| Waters Well Drilling & Constr 17075 Greilich Rd, Plymouth 95669 | (209) 245-6682 |