Abstract:
Treasure Island was constructed in the late 1930s at the site of the Yerba Buena Shoals, a shallow water area directly north of Yerba Buena Island, by placing hydraulic sand fill within a perimeter of rock dikes.
From a geotechnical perspective, there are three primary issues for any new development at Treasure Island. Liquefaction settlement of hydraulic fills, settlement of Young Bay Mud, and seismic stability of the perimeter shoreline and causeway.
This presentation provides a summary of the various ground improvement techniques employed to mitigate all three of these geotechnical concerns on the first development phase.