1. Research Associate, Dept. of Civil and Environmental Engineering, Univ. of Wisconsin, 3206 Engineering Hall, 1415 Engineering Dr., Madison, WI 53706-1691; presently, Research Associate, Center for Environmental Biotechnology, Biodesign Institute, Arizona State Univ., Tempe, AZ 85287-5701. E-mail: chang.ahn@asu.edu
2. Professor, Dept. of Civil and Environmental Engineering, Univ. of Wisconsin, 3230 Engineering Hall, 1415 Engineering Dr., Madison, WI 53706-1691 (corresponding author). E-mail: jkpark@wisc.edu
3. Researcher Fellow, Construction Environment Research Dept., Korea Institute of Construction Technology, 2311 Daewha-Dong, Ilsan-Gu, Goyang-Si, Gyeonggi-Do 411-712, Korea.