1. Asst. Prof., Dept. of Civ. Engrg., Univ. of Colorado, Denver, CO 80217 (corresponding author). E-mail: aramaswa@carbon.cudenver.edu
2. Envir. Engr., Micron Corp. Display, 3000 South Denver Way, Boise, ID 83705-5287.
3. PhD Candidate, Dept. of Civ. Engrg., Univ. of Colorado, Denver, CO 80217.
4. Asst. Prof., Dept. of Civ., Envir. and Arch. Engrg., Univ. of Colorado, Boulder, CO 80309.
5. Prof., Envir. Sci. and Engrg., Colorado School of Mines, Golden, CO 80401-1887.