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1100318 R0T0 0811 JRW1 iii <br />5.2.7 Surface Topography 35 <br />5.3 Analysis of Landslide Cause 36 <br />5.3.1 Slope Stability Analysis 36 <br />5.3.1.1 Surface and Subsurface Geometry 36 <br />5.3.1.2 Groundwater Conditions 37 <br />5.3.1.3 Material Properties 37 <br />5.3.2 Slope Stability Results 38 <br />5.3.3 Cause of the Pikeview Landslide 40 <br />6 Other Landslide Causes Ruled Out 42 <br />6.1 Overly Extensive Excavation of Area H 42 <br />6.2 Over Steepening & Poor Rock Quality of the Highwall Slope 44 <br />6.3 Rainfall/High Groundwater 44 <br />6.4 Failure Along Bedding in the Manitou Formation 45 <br />6.5 Over Excavation and Placement of Fill on the West Slope 45 <br />6.6 Fracturing of Bedrock from Blasting (a.k.a. “Overshoot”) 45 <br />7 Analysis of the Cause of Post-December 2, 2008 Pikeview Landslide Movements 46 <br />8 Conceptual Reclamation Plan Necessary to Stabilize Quarry & Recover <br />Aggregate 47 <br /> <br /> <br />