1. Formerly, Kansas Geological Survey, Univ. of Kansas, 1930 Constant Ave., Lawrence, KS 66045; Dept. of Civil Environmental, and Architectural Engineering, Univ. of Kansas, 2150 Learned Hall, 1530 W. 15th St., Lawrence, KS 66045 (corresponding author).
2. Dept. of Civil Environmental, and Architectural Engineering, Univ. of Kansas, 2150 Learned Hall, 1530 W. 15th St., Lawrence, KS 66045.