1. Professor, Dept. of Civil and Environmental Engineering, Univ. of Missouri, Columbia, MO 65211 (corresponding author).
2. Research Environmental Engineer, Environmental Laboratory, U.S. Army Corps of Engineers Engineer Research and Development Center, 3909 Halls Ferry Rd., Vicksburg, MS 39180.
3. Elementary Educator, MPH, Vicksburg-Warren School District, Sherman Avenue Elementary School, 2145 Sherman Ave., Vicksburg, MS 39183.
4. Research Chemist, Environmental Laboratory, U.S. Army Corps of Engineers Engineer Research and Development Center, 3909 Halls Ferry Rd., Vicksburg, MS 39180.
5. Research Physical Scientist, Environmental Laboratory, U.S. Army Corps of Engineers Engineer Research and Development Center, 3909 Halls Ferry Rd., Vicksburg, MS 39180.