“…Jibson and Michael (2009) used digitized versions of the surficial geologic maps of Schmoll and Dobrovolny (1972) and Yehle et al (1992) and assigned shear strengths to each of the 17 geologic units across the study area using available geotechnical data (i.e., triaxial, direct shear, vane shear and standard penetration test (SPT) data). The geologic units are listed in Table 2 Table 2 are considered best-estimates and are used as the mean properties upon which COV are applied.…”