1. Professor, Dept. of Civil and Environmental Engineering, Idaho State Univ., 921S. 8th Ave., Stop 8060, Pocatello, ID 83209 (corresponding author).
2. Graduate Student, Dept. of Civil and Environmental Engineering, Idaho State Univ., 921S. 8th Ave., Stop 8060, Pocatello, ID 83209.
3. Associate Professor, Dept. of Biological Sciences, Idaho State Univ., 921S. 8th Ave., Stop 8060, Pocatello, ID 83209.
4. Professor, Graduate School of Engineering, Research Center for Environmental Quality Management, Kyoto Univ., 1-2 Yumihama, Otsu, Shiga 520-0811, Japan.