What does it mean if a property is in an Earthquake Fault Zone? It means there is an active fault nearby that poses a potential risk of surface rupture. Property ownersplanning to sell real property must disclosure this information, and any new construction may require a fault study to ensure structural safety.

Earthquake Fault Zones encompass surface traces of active faults that pose potential risks to existing and future structures. The proposed zones are outlined with approximately a 500-foot buffer on either side of these fault traces. 

Key Information and Actions:

• Public Comment Period: The 90-day public comment period ends on August 21, 2024. Comments and technical review submissions can be sent to:

Jeffrey Schmidt, Executive Officer of the State Mining and Geology Board, 

Email: smgb@conservation.ca.gov

or by mail at 710 P Street, MS 1909, Sacramento, CA 95814

• Public Hearing: The State Mining and Geology Board will conduct a public hearing towards the end of the comment period. Details regarding the date and location will be announced on the SMGB website (https://www.conservation.ca.gov/smgb).

• Detailed Maps: Detailed Preliminary Review Maps can be accessed on the CGS website at https://www.conservation.ca.gov/cgs/preliminary-releases.

For more information on Earthquake Fault Zones, the AP Act requirements, and how they may affect property transactions, visit the CGS Alquist-Priolo web page at https://www.conservation.ca.gov/cgs/alquist-priolo.

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Los Angeles County Alquist-Priolo Earthquake Fault Zones Map: