| Business | Phone |
| California Microbiological 322 Bellevue Ave, Santa Rosa 95407 | (707) 573-0118 |
| Indilab 3330 Industrial Dr, Santa Rosa 95403 | (707) 526-1654 |
| Inspection Services Inc 173 Brittain Ln, Santa Rosa 95401 | (707) 570-2870 |
| K Prime Inc 3621 Westwind Blvd, Santa Rosa 95403 | (707) 527-7574 |
| Nts Phase Seven Laboratories 110 Stony Point Rd, Santa Rosa 95401 | (707) 284-5875 |
| Soil Technician Svc Santa Rosa 95403 | (707) 528-9985 |