The Concord Fault, which runs through Bay Area neighborhoods in Concord and Walnut Creek is in a different location than previously understood. It could produce a major earthquake in the Bay Area.

The Alquist-Priolo Earthquake Fault Zones allow the state to regulate development built near faults. Santa Monica doesn’t have one yet but it’s in the works as of July 1.

CGS fault maps are in the works by David Mark Simpson July 25, 2014 in Environment, News ...