after my presentation, patrick godlini is here, the city's chief resiliency officer will give an update on the fourth sea plan in which the seawall is an integral part. on with the show. great seawall stretches from fisherman's wharf to mission creek. here you can see the original 1850s shoreline and study boundary which is similar. p. >> i'm compelled to recognize the leadership in understanding the importance of the seawall. the study the sea wall and approve funding for this earthquake study. somi thought the summary was appropriate. the study is led between a joint venture between ght with a long history in the bay area and gtc geotechnical engineering firm with a strong affinity for young bay mud and old bay clay as well. with us today a craig lewis. if you can stand up, please. craig lewis is a structural engineer from ght. and darrin van huff geotechnical engineer from gtc. they've been integral parts of the study leading the study. because of the significance of the study and the complexity of the engineering, staff elected to hire a separate engineering team to perform a detail