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1.43 <br /> 4D Configuration: <br /> Bench Height above El. 7000: 40 ft <br /> 7,700 Bench Width above El. 7000: 40 ft <br /> Bench Height below El. 7000: 70 ft <br /> Bench Width below El. 7000: 30 ft <br /> 7,500 Bench Face Angle: 90° <br /> Intermediate Bench Width: 40 ft <br /> 7,300 Material Properties: <br /> Ll y = 164 pcf <br /> c' = 295.0 psi = 42475 psf <br /> 7,100 cp' =av 6.8° <br /> 00 <br /> 0 <br /> > 6,900 <br /> Q <br /> Z <br /> 6,700 <br /> C <br /> O <br /> N 6,500 <br /> a) <br /> W 6,300 <br /> 6,100 <br /> 5,900 <br /> 5,700 - ---1-- - - -1—_._ <br /> -1,200 -700 -200 3W 800 1,300 1,800 2,300 <br /> Horizontal Distance (ft) <br /> Notes: Morrison Quarry Case 5-1 <br /> 1. The Factor of Safety(FS)value shown is for the <br /> critical failure surface. South Quarry Highwall Proposed Benching <br /> Jefferson County, CO /1����+++ E I Consultants Sensitivity Analysis Results <br /> V <br /> Aggregate Industries June 2017 Figure B-21 <br />