1. Graduate Civil Engineer, Environmental Chemical Corporation (ECC), 1240 Bayshore Highway, Burlingame, CA; formerly, Graduate Student, Dept. of Civil Engineering, Texas A&M Univ., College Station, TX.
2. Assistant Professor, Dept. of Geography and Environmental Engineering, Johns Hopkins Univ., Baltimore, MD 21218; formerly, Zachry Dept. of Civil Engineering, Texas A&M Univ., College Station, TX.