1. Ph.D. Candidate, Dept. of Civil and Environmental Engineering, Univ. of California, Davis, One Shields Ave., Davis, CA 95616.
2. Assistant Professor, Dept. of Civil and Environmental Engineering, Univ. of California, Davis, One Shields Ave., Davis, CA 95616 (corresponding author).
3. Former Graduate Student Researcher, City of San Francisco, 1 D. Carlton B. Goodlett Place, San Francisco, CA 94102.