Photo: Gary Vlahakis, March 3, 2012. The lizard's body was not quite 2 inches long, but his tail was more than twice as long as his body. (Click on photo to enlarge.)
This appears to be a juvenile Alligator Lizard. There are many species of Alligator Lizards in California. Don't ask me which one this is, since juveniles can look very different than adults. Learn More: California Herps