1. Postdoctoral Research Associate, Dept. of Civil and Environmental Engineering, Princeton Univ., 59 Olden St., Princeton, NJ 08544 (corresponding author).
2. Associate Professor, Dept. of Agricultural and Biological Engineering, Univ. of Florida, 279 Frazier Rogers Hall, Gainesville, FL 32611.
3. Manager, Modeling and Decision Support, Tampa Bay Water, 2575 Enterprise Rd., Clearwater, FL 33763.