What shear strength parameters should be used along a failure surface

underneath this retaining structure at the Port of Anchorage for the: $($i$)$ end$-$ofConstruction, $($ii$)$ long$-$term static condition, and $($iii$)$ seismic condition? The

proposed retaining structure is underlain by Bootlegger Cove Clay Formation

$($BCF$)$ and the exterior water level ranges from Elevation $-5$ ft for the end$-$ofconstruction condition to $+7\mathrm{.}5$ for the long$-$term static condition. Pearce et al$.$

$(2010)$ discuss the preliminary design of the structure and CH$2$M$-$Hill $(2013)$

discuss the re$-$analysis. In particular, what shear strength parameters should be

used to calculate the static factor of safety for the following conditions using the

cross$-$section and geotechnical information provided below: