1. Senior Staff Professional, Geosyntec Consultants, 10211 Wincopin Cir Floor 4, Columbia, MD 21044; formerly Ph.D. Candidate, Dept. of Civil and Environmental Engineering, Pennsylvania State Univ., University Park, PA 16802.
2. Professor, Dept. of Civil and Environmental Engineering, Pennsylvania State Univ., University Park, PA 16802 (corresponding author).