1. Senior Professional, Kleinfelder, Inc., 6451 S. Country Club Rd., Suite 131, Tucson, AZ 85706.
2. Project Engineer, NCS Consultants, 1840 E. River Rd., Suite 300, Tucson, AZ 85718.
3. Professor, Dept. of Civil Engineering and Engineering Mechanics, Univ. of Arizona, 1209 E. Second St., Tucson, AZ 85721.
4. Associate, GeoSyntec Consultants, Inc., 475 14th Street, Suite 450, Oakland, CA 94612-1940.