The act only addresses the hazard of surface fault rupture and does not address other earthquake hazards . The Seismic Hazards Mapping Act , passed in 1990 , addresses non-surface fault rupture earthquake hazards , including liquefaction and seismically induced landslides . The act only applies to faults which are " sufficiently active " and " well defined " - for example the 1994 Northridge earthquake occurred on a blind thrust fault not zoned by the act because of a lack of surface evidence
1994 Northridge earthquake
1994 Northridge earthquake
Alquist Priolo Special Studies Zone Act