1. Assistant Professor, Dept. of Civil and Environmental Engineering, Washington State Univ., Pullman, WA 99163.
2. Assistant Professor, Dept. of Civil and Environmental Engineering, Univ. of Alberta, Markin/CNRL Natural Resources Facility, Edmonton, AB, Canada T6G 2W2 (corresponding author).
3. M.Sc. Student, Dept. of Civil and Environmental Engineering, Univ. of Alberta, Edmonton, AB, Canada T6G 2E9.