1. Associate Professor, Dept. of Civil and Environmental Engineering, Manhattan College, Bronx, NY 10471 (corresponding author).
2. Assistant Engineer, Hazen and Sawyer, 4000 Hollywood Blvd. 750N, Hollywood, FL 33021; formerly, Student, Dept. of Civil and Environmental Engineering, Manhattan College, Bronx, NY 10471.
3. Professor, Dept. of Civil and Environmental Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180.