1. Graduate Student, Dept. of Civil and Environmental Engineering, The Univ. of Western Ontario, London ON, Canada N6A5B9.
2. Associate Professor, Dept. of Chemical and Biochemical Engineering, The Univ. of Western Ontario, London ON, Canada N6A5B9 (corresponding author).
3. Professor and Chair, Dept. of Civil and Environmental Engineering, The Univ. of Western Ontario, London ON, Canada N6A5B9.