leg site hole core section top interval depth(cm) bottom interval depth(cm) top of core(m) sample_depth(m) percent sand percent silt percent clay 70 506 C 6 2 87.0 87.0 21.10 23.47 18.6 26.2 55.2 70 506 C 7 11 123.0 123.0 25.50 26.73 23.7 27.2 49.2