1. Assistant Professor, Dept. of Civil and Environmental Engineering, Colorado School of Mines, Golden, CO 80401.
2. Engineer, Dept. of Civil and Environmental Engineering, Colorado School of Mines, Golden, CO 80401.
3. Principal, KL&A Inc., Golden, CO 80401.
4. Ph.D. Candidate, Dept. of Civil and Environmental Engineering, Colorado School of Mines, Golden, CO 80401 (corresponding author).