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Cripple Creek & Victor Gold Mining Company Squaw Gulch Valley Leach Facility Design <br />loads. Settlement of the regraded SGOSA slopes was calculated using the Plaxis <br />V8.2, finite - element code. In this calculation, the SGOSA material was modeled as a <br />coarse rockfill. The rockfill properties (unit weight and stiffness) were derived from a <br />previous settlement analysis of SGOSA. The rockfill was modeled as a strain - <br />hardening material with a stiffness that varies with applied normal stress. The results <br />of the settlement calculations are presented in Appendix C.6. The results of the <br />analysis indicate that the anticipated settlements along the SGOSA slopes will likely <br />range from 2.4 to 29 inches under the applied ore loading. These settlements are <br />considered minor and are not anticipated to damage the liner system as they primarily <br />occur as vertical deformations. The majority of the horizontal deformation will be less <br />than 12 inches. The shear strains on the slope are Tess than 4 percent, which is well <br />within the acceptable strain limits for an LLDPE geomembrane liner system. <br />Project No.: 74201125G0 Page 31 <br />1 September 2011 <br />amec'3 <br />