1. R&D Center, Kolon Engineering and Construction, 207-2 Mabuk-Ri, Guseong-Myun, Yongin, Korea
2. Korea Water Resources Corporation, (KOWACO), San 6-2, Yeonchuk-dong, Daedeok-gu, Daejeon 306-711, Korea
3. Department of Environmental Science and Engineering, K-JIST, Oryong-dong 1, Gwangju 500-712, Korea