1. Department of Civil and Environmental Engineering, The Pennsylvania State University, 212 Sackett Building, University Park, PA 16802-1408. Phone: 814-863-0578, Fax: 814-863-7304. E-mail: wdb3@psu.edu
2. Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park, PA, 16802-1408
3. Department of Geology and Geophysics, University of Wisconsin, 1215 W. Dayton Street, Madison, WI 53706
4. Department of Civil and Environmental Engineering, South Dakota School of Mines and Technology, Rapid City, SD 57701
5. Argonne National Laboratory, Argonne, IL 60439-4843