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V. ENGINEERING PROPERTIES OF SITE SOILS A. LABORATORY TESTING Laboratory tests were run on soil samples obtained during the field investigation. Bulk samples were classified using Atterberg Limits and percent passing the No. 200 sieve. Compaction curves and remolded permeability tests were also conducted on selected bulk samples to evaluate their suitability for use as soil liner and cover material . Undisturbed samples were evaluated for strength properties using direct shear and unconfined compressive strength tests. The strength test results will be used in future slope stability analyses specified in the Subchapter 15 regulations. Summaries of laboratory test results are presented in Appendix G. Laboratory classifications confirmed field descriptions. Testing focused on fine-grained soils with potential use in landfill construc- tion. Fine-grained soils described in the field as clays and silts were classified by testing to be primarily CL (clay) and ML (silt) , respectively. Sand content of fine-grained soils within the 0 to 20 feet interval ranged from less than 5 to 50 percent. Silty sand samples tested were found to contain between 39 and 47 per- cent fines. It should be remembered that soil materials from shallow depths at the site vary gradationally, both vertically and horizon- tally, with respect to fine-grained versus coarse-grained characteris- tics. Isolated samples do not necessarily indicate consistent lithol - ogies across the site. Samples of soils to approximately -1/2 feet from Borings P-1 and P-2 were tested for compaction characteristics and remolded permeability to ascertain the suitability of available on-site material for use as cover and in construction of retention structures. The permeability of the soils classified as ML and CL was determined to range from PJ9 9390206.00D 16