1. Assistant Professor, Dept. of Civil and Environmental Engineering, Univ. of California at Los Angeles, Los Angeles, CA 90095. E-mail: sjbrandenberg@ucla.edu
2. Professor, Dept. of Civil and Environmental Engineering, Univ. of California at Davis, Davis, CA 95616.
3. Senior Staff Engineer, Geosyntec Consultants, Inc., 475 14th St., Ste. 450, Oakland, CA 94612; formerly, Graduate Student, Dept. of Civil and Environmental Engineering, Univ. of California at Davis, Davis, CA 95616.