| Business | Phone |
| Counihan Consulting Engrng 259 Nevada St, Auburn 95603 | (530) 888-8072 |
| Fallon Engineering 11899 Edgewood Rd # P, Auburn 95603 | (530) 885-3760 |
| Alfred M Thym Pe 124 Oakwood Dr # C, Auburn 95603 | (530) 823-2533 |
| Anthony R Ormsby Engineering 25071 Rodeo Flat Rd, Auburn 95602 | (530) 269-1640 |
| Ez Load 3257 Sunset Ter, Auburn 95602 | (916) 548-1150 |
| Mulder & Assoc 112 Mulberry Ln, Auburn 95603 | (530) 823-5715 |