1. Water Resources Engineer, ARCADIS Inc., 100 E Campus View Blvd., Columbus, OH 43235; formerly, Environmental Engineering Program, Dept. of Biomedical, Chemical, and Environmental Engineering, Univ. of Cincinnati, 742 Engineering Research Center, P.O. Box 210012, Cincinnati, OH 45221-0012.
2. Environmental Engineering Program, Dept. of Biomedical, Chemical, and Environmental Engineering, Univ. of Cincinnati, 742 Engineering Research Center, P.O. Box 210012, Cincinnati, OH 45221-0012 (corresponding author).