A report this month by The California Geological Survey (CGS) released a new Seismic Hazard Zone revealed the most dangerous places in the Bay Area during liquefaction and landslides following a major earthquake. “The highest hazard areas are concentrated in regions of man-made landfill, especially fill that was placed many decades ago in areas that were once submerged bay floor,” said USGS

For more info, please read the original article by Curbed SF:
https://sf.curbed.com/2019/4/15/18311670/earthquake-map-california-geological-survey-liquefaction