1. Assistant Professor, Dept. of Civil Engineering, Stony Brook Univ., 2434 Computer Science, Stony Brook, NY 11794-4424.
2. Postdoctoral Researcher, New York State Center for Clean Water Technology and Dept. of Chemistry, Stony Brook Univ., 104 Chemistry, Stony Brook, NY 11794-3400.
3. Graduate Student, Dept. of Civil Engineering, Stony Brook Univ., 2434 Computer Science, Stony Brook, NY 11794-4424.
4. Distinguished Professor, Dept. of Chemistry, Stony Brook Univ., 104 Chemistry, Stony Brook, NY 11794-3400.
5. Alena and David M. Schwaber Professor of Environmental Engineering, Dept. of Civil and Environmental Engineering, Worcester Polytechnic Institute, 100 Institute Rd., Worcester, MA 01609-2280 (corresponding author).