1. Research Associate, Geological Engineering, Univ. of Wisconsin–Madison, Madison, WI 53706 (corresponding author).
2. Senior Associate, Exponent, Bellevue, WA 98007.
3. Wisconsin Distinguished Professor, Director of Sustainability Research and Education and Chair, Civil & Environmental Engineering, Geological Engineering, Univ. of Wisconsin–Madison, Madison, WI 53706.
4. Professor and Head, Dept. of Civil, Construction, and Environmental Engineering, North Carolina State Univ., Raleigh, NC 27695-7908.
5. Professor, Geological Engineering, Univ. of Wisconsin–Madison, Madison, WI 53706.