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4 - oil Unit Material Type Density(pcf) Phi' (duo, C (pcf) <br /> Overburden Overburden 83.4 27 0 <br /> Topsoil Stockpile Overburden/Topsoil Mix 81.4 22 0 <br /> F1 ` ' Fines Reject Reject Sand and Gravel 87.2 30 0 <br /> FOS = 1 .6 (meets design criteria) <br /> 7,500 7,500 <br /> 7,450 7,450 <br /> 7,400 7,400 <br /> c <br /> 7,350 T-50 <br /> c <br /> N 7,300 T <br /> N 7,250 7,250 N <br /> LV W <br /> 7,200 7,200 <br /> 7,150 7,150 <br /> 7,100 7,100 <br /> 0 200 400 600 800 1,000 1,200 1,400 <br /> Distance (ft) <br /> Note: TRANSIX MIX CONCRETE CO. <br /> 1. The factor of safety(FOS) is for the optimized slip surface calculated using the Spencer method in SLOPE/W HITCH RACK RANCH <br /> (Version 8.14). <br /> 2. Static FOS Criteria>_ 1.5. Stability Analysis <br /> Section A <br /> Operational -Static <br /> Rev. A NORWEST Fig.A.I <br />