| Business | Phone |
| Hydro Solutions Of California Po Box 922, Nevada City 95959 | (530) 478-1260 |
| Marcus H Bole & Assoc Po Box 53, Nevada City 95959 | (530) 477-7714 |
| Mrg & Assoc 17798 Starduster Dr, Nevada City 95959 | (530) 432-9373 |
| R J Poff & Assoc 11884 Black Oak Dr, Nevada City 95959 | (530) 273-1709 |
| S R Environmental Solutions Po Box 1711, Nevada City 95959 | (530) 274-0660 |
| Susan Sanders Biological 12213 Half Moon Way, Nevada City 95959 | (530) 477-7415 |
| White Pine Restoration 12916 Robinson Rd, Nevada City 95959 | (530) 913-8248 |