1. Assistant Professor, Dept. of Civil and Environmental Engineering, Villanova Univ., 800 Lancaster Ave., Villanova, PA 19085 (corresponding author).
2. Assistant Professor, Dept. of Civil and Environmental Engineering, Pennsylvania State Univ., 231D Sakett Building, University Park, PA 16802.
3. Graduate Research Assistant, Dept. of Civil and Environmental Engineering, Villanova Univ., 800 Lancaster Ave., Villanova, PA 19085.
4. Environmental Program Specialist, Federal Highway Administration, 12300 W. Dakota Ave., Suite 340, Lakewood, CO 80228.