1. Assoc. Prof., Dept. of Civ. Engrg., 110 Lowry Hall, Clemson Univ., Clemson, SC 29634-0911; E-mail: pwork@eng.clemson.edu.
2. Des. Engr., Tettemer & Associates, Costa Mesa, CA.
3. Res. Envir. Engr., U.S. Envir. Protection Agency, Athens, GA 30605-2700; formerly, Assoc. Prof., Dept. of Civ. Engrg., Clemson Univ., Clemson, SC 29634.
4. Grad. Res. Asst., Dept. of Civ. Engrg., Clemson Univ., Clemson, SC 29634.