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Michael J. DeFrisco

California Geological Survey
Engineering Geologist

Expertise: Engineering geology, earthquake geology, seismic hazards, fault and landslide mapping
About Me Publications
Performs fault evaluations under the Alquist-Priolo Earthquake Fault Zoning Act and provides review of engineering geologic and geotechnical reports prepared for critical facilities throughout California and permitted through the District of the State Architect (DSA) and Office of Statewide Health Planning and Development (OSHPD). Participates in post-event earthquake and fire response field teams including the 2018 Montecito debris flows and 2019 Ridgecrest Earthquake Sequence. Joined CGS in 2016 after working as a consulting geologist in the private sector evaluating seismic hazards for Southern California Edison and conducting and managing engineering geologic investigations.