1. Ph.D. Student, Dept. of Civil, Environmental and Architectural Engineering, Univ. of Colorado Boulder, 1111 Engineering Dr. ECOT 441, Boulder, CO 80309.
2. Associate Professor, Dept. of Civil, Environmental and Architectural Engineering, Univ. of Colorado Boulder, 1111 Engineering Dr. ECOT 514, Boulder, CO 80309 (corresponding author).
3. Geotechnical Engineer, AECOM, 6200 South Quebec St., Greenwood Village, CO 80111.
4. Associate Professor, Dept. of Civil, Environmental and Architectural Engineering, Univ. of Colorado Boulder, 1111 Engineering Dr. ECOT 517, Boulder, CO 80309.
5. Research Professor, Dept. of Civil, Environmental and Architectural Engineering, Univ. of Colorado Boulder, 1111 Engineering Dr. ECOT 441, Boulder, CO 80309.
6. Associate Professor, Dept. of Civil and Environmental Engineering, Brigham Young Univ., 368P Clyde Bldg., Provo, UT 84602.