1. Department of Civil and Environmental Engineering, South Dakota School of Mines and Technology, Rapid City, SD 57701.
2. Department of Civil and Environmental Engineering, South Dakota School of Mines and Technology, 501 East Saint Joseph Street, Rapid City, SD 57701.
3. Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park, PA 16802.
4. Environmental Technology Laboratory, General Electric Company, Niskayuna, NY 12309.