1. Research Associate and Lecturer, Univ. of British Columbia, 2020-2207 Main Mall, Vancouver, Canada BC V6T 1Z4; presently, Dept. of Earth Sciences, Engineering Geology, ETH Zürich, Sonneggstrasse 5, 8092 Zurich, Switzerland. (corresponding author).
2. Professor, Dept. of Civil and Environmental Engineering, Univ. of Illinois at Urbana–Champaign, 205 N. Mathews Ave., Urbana, IL 61801.
3. Technical Project Manager, Langan Engineering, 300 Kimball Drive, Parsippany, NJ 07054.