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_ 27 _ <br />• <br />L~ <br />will be used for the stability analyses. <br />Permeability testing will be performed on soils that <br />will form the foundation of the proposed waste disposal pile. <br />Rock testing will be performed only if critical dividing <br />planes are found in the Mancos Shale below the proposed waste <br />pile and below the existing crushing and screening level fill. <br />Direct shear testing would then be performed on these planes <br />to evaluate the available shearing resistance. It cannot be <br />excluded that some additional tests, such as slake durability <br />tests would be performed on the Mancos Shale. It may also be <br />necessary to perform swell-consolidation tests on the same <br />type of rock. <br />7.6 STABILITY ANALYSES <br />A series of stability analyses will be performed during <br />Phase 2. These analyses will include the evaluation of <br />existing cuts and fills and of the cut and fill slopes after <br />reclamation. <br />A set of analyses will be necessary to evaluate the <br />stability of the future waste disposal pile. Within these <br />analyses, the stability of the foundations of the pile will <br />be analyzed as well. <br />*'c k>F k:: <br />• <br />July 16, 1981 <br />GEO-HYDRO CONSULTING, INC. <br />Michal Bukovansky <br />Senior Engineering Geologist <br />~roQO ca+w~nNC, wc. <br />