Welcome to CD.
The FIRST website has a search function to find teams in your state at http://usfirst.org/whatsgoingon.aspx
. Select FIRST
Robotics Competition, de-select events, and select California. There are 117 teams with two in the San Mateo area. One is established and one is a second year team. The website for 840 (Aragon Robotics) is http://www.aragonrobotics.org/
and they list their email address as firstname.lastname@example.org