San Andreas Fault ya haifar da girgizar ƙasa a 1906 da 1989. Ƙananan girgizar ƙasa suna faruwa akai-akai. Barazanar manyan girgizar ƙasa tana taka muhimmiyar rawa a ci gaban kayayyakin aikin gari. Birnin ya gina tsarin samar da ruwa na taimako kuma ya sake sabunta lambobin gininsa, yana buƙatar gyare-gyare ga tsofaffin gine-gine da kuma ingantattun matakan injiniya don sabon gini. Duk da haka, har yanzu akwai dubban ƙananan gine-gine waɗanda ke da rauni ga lalacewar girgizar ƙasa. USGS ta saki samfurin hasashen girgizar ƙasa na California wanda ke hasashen faruwar girgizar ƙasa a California.
kayan da aka cire daga bay da kuma kayan da aka samu daga aikin tono Yerba Buena Tunnel