1. Project Engineer, Praad Geotechnical Inc., 5465 South Centinela Ave., Los Angeles, CA 90066-6942.
2. Professor and Vice Chair, Dept. of Civil and Environmental Engineering, Univ. of California, Los Angeles 5731 Boelter Hall, Los Angeles, CA 90095 (corresponding author). E-mail: jstewart@seas.ucla.edu
3. Associate Professor, Dept. of Civil and Environmental Engineering, RM 2230C NCEL, MC-250, Univ. of Illinois at Urbana-Champaign, 205 N. Mathews Ave., Urbana, IL 61801.
4. Associate, GeoSyntec Consultants, 2100 Main St., Ste. 150, Huntington Beach, CA 92648.
5. Consulting Engineer, 1076 Carol Lane, No. 136, Lafayette, CA 94549.