1. Central Research and Engineering Technology, Union Carbide Corporation, South Charleston, WV 25303
2. Department of Environmental Protection, Seadrift Plant, Union Carbide Corporation, North Seadrift, TX 77983
3. Department of Civil and Environmental Engineering, Utah State University, Logan, UT 84322
4. Texas Agricultural Experiment Station, Research and Extension Center at Dallas, Texas A&M University, Dallas, TX 75252