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CESARE,MC. <br /> A summary of the material properties used in our analysis is shown in Table 3. <br /> TABLE 3. Material Properties Used <br /> •draulic Conduc# v f Iwri+ n <br /> Unit Cohesion Angle <br /> Material an sec ft sec ft da <br /> Weight' c m <br /> Clay i 1.00E-07 3.28E-09 V 2.83E-04 0.1 �� - � (degrees <br /> 125 100 26 <br /> 1 Sand � 1.00E-06 3.28E-08 2.83E-03 0.1 ( 125 0 30 <br /> L_Gravel 1.00E-02 3.28E-04 28.35 . 0.1 135 0 35_ _ 1 <br /> Shale 9.53E-05 3.13E-06 2.70E-01 0.1 130 50 27 <br /> Shale __T 1.00E-08 3.28E-10 ? 2.83E-05 , 0.01 130 500 25 <br /> Slurry Wall (ist) f 1.00E-06 3.28E-08 2.83E-03 1 1 4 115 4 0 30 <br /> Slurry Wail 1.00E-07 3.28E-09 . 2 83E-04 ! 1 l 115 __ 0 i 30 <br /> f (2nd) <br /> ANALYSIS RESULTS <br /> We performed seepage and slope stability analyses using SEEP/W and SLOPE/W software <br /> published by Geo-Slope International and contained in the Geostudio 2007 suite of applications <br /> (Version 7.20, Build 5033). <br /> STEADY STATE SEEPAGE ANALYSIS <br /> For the steady state seepage analysis of the reservoir when empty, we analyzed the cross section <br /> we created at Station 31+52 (the thickest gravel layer encountered). We first evaluated a slurry <br /> wall with a hydraulic conductivity 1x10 cm/sec. The Seep/W analysis provided the total flux (i.e., <br /> flow) in a one-foot length of wall of 5.5804 ft3/day. The Seep/W analysis results for the slurry wall <br /> with a hydraulic conductivity of 1x10 cm/sec are shown in Figure 1. We multiplied the flux by the <br /> total wall length (around the perimeter) to obtain an estimate of the total flow through the wall. <br /> The total wall length was taken as the average of the perimeter of the pit at the top of the 3:1 <br /> slope and the perimeter of the base of the reservoir (4460 feet). For this case, we estimated total <br /> inflow through the bottom and the perimeter of 24,888 ft3/day. The State Engineer's total <br /> maximum allowable inflow (bottom and perimeter) is 28,767 ft2/day. Based on the material <br /> properties used, for the section analyzed with the thickest gravel layer, the factor of safety is about <br /> 1.2 — between the actual calculated inflow and the total maximum allowable inflow. <br /> 11.124 GP Randle:Memo 03 21.1303.23.13 3 <br />