1. Environmental Engineer, Aeronautical Systems Center, Engineering Directorate, 1801 Tenth St., Wright-Patterson AFB, OH 45433-5746.
2. Self-Employed Environmental Science Contractor, 30 Terradyne Trace, Springboro, OH 45066.
3. Associate Professor, Univ. of Dayton, Dept. of Civil and Environmental Engineering, 300 College Park, Dayton, OH 45469-0243.