Hi Chris. That wouldn’t by any chance be the Maacama fault would it? Take Care…Don in creepy town

“No major earthquakes have occurred during the historical record on the more seismically active Maacama, and Bartlett Springs faults, northern extensions of the Hayward-Rodgers Creek and Calaveras-Concord-Green Valley faults in the San Francisco Bay area, but the slip deficit on the Maacama fault, based on a high slip rate found by previous geodetic studies, may now be large enough to generate a magnitude 7 earthquake, posing a significant seismic hazard.”