1. Associate, Geosyntec Consultants, 3131 Princeton Pike, Bldg. 1-B, Stee 205, Lawrenceville, NJ 08648.
2. Associate Professor, Dept. of Civil and Environmental Engineering, National Univ. of Kaohsiung, No. 700 Kaohsiung Univ. Rd., Kaohsiung, Taiwan, ROC.
3. Dept. of Civil and Environmental Engineering, Lehigh Univ., Bethlehem, PA, 18015 (corresponding author).