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verts will be installed in the easement so that water from filling Lake 3 will pass by gravity to Lake <br />1. Once backfilling and pad creation occurs in Area 3, these culverts will be sealed on both ends. <br />After mining of Area 3 is complete, the operation will now move to the upper bench, where Areas 4 <br />and 5 will be mined. These areas have considerably more overburden than the previous three min- <br />ing areas on the lower bench. <br />The table below shows the drill data and average thicknesses for Area 4: <br />Area 4 <br />Hole # SoillOverburden <br />Depth Gravel Thickness Total Depth <br />2 21.0 18.0 39.0 <br />3 22.0 16.0 38.0 <br />4 22.0 21.0 43.0 <br />8 21.0 23.0 44.0 <br />Average 21.5 19.5 41.0 <br />Since Area 4 is 40.6 acres in size, an average depth of 21.3 feet yields 1,395,000 cy of <br />soil/overburden. Part of the topsoil will be stored in 2 stockpile areas immediately east and north of <br />the pit, as shown on Map C-2. The volume stored here is 34,000 cy and 3100 cy, respectively. This <br />soil will be used in combination with the 49,170 cy stored in the south topsoil stockpile to place a <br />cover on the industrial pads and lake slopes for final reclamation. Therefore, the total soil stock- <br />piled for pad reclamation is 86,270 cy. Part of this soil will be used to cover graded areas once they <br />are completed. The land pads will be seeded and mulched although they may be disturbed for in- <br />dustrial sites a short time later. Part of the overburden and topsoil from Area 4 will be backfilled in <br />part of Areas 1, 2 and 3 to create the 3H:1V sideslopes around the lake and a peninsula of land for <br />industrial use. The remainder of the soil and overburden will be used to backfill the slopes of Area <br />4 and provide fill for some areas that will be made into land parcels after reclamation. <br />15 Road Pit 10/02 I2 <br />