1. Associate Professor, Dept. of Civil and Environmental Engineering, Univ. of California Davis, One Shields Ave., Davis, CA 95616 (corresponding author).
2. Senior Staff Engineer, Geosyntec Consultants, Acton, MA 01720; formerly, Doctoral Student, Univ. of California Davis, One Shields Ave., Davis, CA 95616.
3. Professor, Dept. of Civil and Environmental Engineering, Univ. of Massachusetts Amherst, Amherst, MA 01003.