1. Doctoral Student, Dept. of Civ., Envir., and Arch. Engrg., Univ. of Colorado, Boulder, CO 80309-0428.
2. Prof., Dept. of Civ., Envir., and Arch. Engrg., Univ. of Colorado, Boulder, CO.
3. Doctoral Student, Dept. of Civ., Envir., and Arch. Engrg., Univ. of Colorado, Boulder, CO.
4. Envir. Engr., U.S. Environmental Protection Agency, 2890 Woodbridge Ave., Edison, NJ 08837-3679.