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Schematic Cross Section <br />of Slope Stability Analysis <br />. / Material A <br />2 <br />I i ----------- -------------------- <br />Theoretical Failure Plane Material B <br />Material C <br />Material A is the recently placed material, about six (6) feet thick <br />Material B was previously placed and certified by the Colorado <br />divisior. of Mining and Geciogy <br />Material C is natural foundation soil of unknown strength character <br />We have assumed that the three layers depicted above have strength <br />and physical characteristics similar to the recently placed mate__sl for <br />which we have laboratory strength test data. We have alsc assumed that <br />the existing drain system will function properly and that there will be <br />no groundwater influencing this material. <br />This sketch presents the assumed location and shape of <br />the theoretical failure surface with a static factor of safety of 1.57 <br />GA'ti RIDGE ENERGY <br />PN: D95253MT <br />December 21, 1995 <br />Figure 1 <br />~, <br />4 <br />~Lamb~rt and ~,s,~o~ia~~,~ ~: , "~.: <br />Flqu.s~ <br />