ASCE Orange County Branch x Geo-Institute – Emergency Stabilization of a Coastal Landslide in Southern California
Tue, Oct 14
|Back Bay Conference Center (Irvine Lane)
Mahdi Sharghi, Ph.D., P.E. and Jim Starick, P.E. of HDR will present a case history of a landslide in a Southern California coastal zone, emphasizing the integration of advanced monitoring technology in an emergency response project.
Time & Location
Oct 14, 2025, 4:30 PM – 8:30 PM
Back Bay Conference Center (Irvine Lane), 3415 Michelson Dr, Irvine, CA 92612, USA
About the event
ABSTRACT
Mahdi Sharghi, Ph.D., P.E. and Jim Starick, P.E. of HDR will present a case history of a landslide in a Southern California coastal zone, emphasizing the integration of advanced monitoring technology in an emergency response project. The landslide, driven by coastal erosion and other environmental factors, posed significant risks to public safety, private property, public transit, freight operations, and one of the military’s strategic corridors.
Geotechnical analyses confirmed that erosion of sand at the landslide toe reduced its natural buttressing capacity, ultimately triggering the failure. Emergency mitigation measures involved placing approximately 22,000 metric tons of riprap in three phases to re-establish toe support.