1. Doctoral Candidate, School of Civil Engineering and Environmental Science, Univ. of Oklahoma, 202 W. Boyd, 313 Carson Engineering Center, Norman, OK 73019.
2. Undergraduate Research Assistant, School of Civil Engineering and Environmental Science, Univ. of Oklahoma, 202 W. Boyd, 333 Carson Engineering Center, Norman, OK 73019.
3. Kerr-McGee Presidential Professor, School of Civil Engineering and Environmental Science, Univ. of Oklahoma, 202 W. Boyd, 330 Carson Engineering Center, Norman, OK 73019.
4. Project Director, Surbec-ART Environmental LL.C., 3200 Marshall Ave., Suite 200, Norman, OK 73072.