| Business | Phone |
| Another Software Co 444 San Antonio Ave, Palo Alto 94306 | (650) 856-1168 |
| Green Citizen Inc 100 Hamilton Ave, Palo Alto 94301 | (650) 326-3900 |
| Opus Environmental 167 Hamilton Ave # 400, Palo Alto 94301 | (650) 321-6787 |
| Watershed Advisory Group Palo Alto 94301 | (650) 853-0464 |
| Wsp Environmental Inc 261 Hamilton Ave, Palo Alto 94301 | (650) 326-7440 |
| M & M Environmental Palo Alto 94306 | (650) 843-1212 |
| Robinson Project Mgmt 4155 El Camino Way # A, Palo Alto 94306 | (650) 856-2198 |
| Russell Associates 2390 El Camino Real # 234, Palo Alto 94306 | (650) 473-0204 |