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Topsoil will oe piled separately from subsoil material. Figure 1 snows <br />• <br />tite proposed pile locations. These locations may enange as the pile <br />develops. Topsoil is most abundant in Area 3, as shown on Figure 1. <br />Originally, WFC planned to salvage 2 ft in this area. WFC nas electeu to <br />remove 1 ft. This will help insure a barrier 'oetxeen the pile ana <br />suosurface rater. However, if during salvaging operations more tnan 1 ft <br />can be salvaged, WFC rill do so. Soil Sample 1y was taken in Area 3 during <br />the December lydb sa~apling and shows availaole soil to a deptn of S it. <br />Tne final coal processing xaste contours are shown on h'igure 1. the <br />cut volumes rill becoiae fill to estaolish the final contours as shown on <br />Figure 1. <br />HYDdULUGIC IMPACTS <br />In assessing the hydrologic impacts, the following coaclusions can oe <br />made based an the preceding information: <br />• 1. Ciruela Canyon alluvium is not geologically or hydrologically conneccad <br />to the Purgatoire Alluvium; therefore, the pile should not at'fect or <br />degrade the water quality in the Purgatoire alluvium. <br />1. The Ciruela Canyon alluvium water table is controlled oy the oedrocK <br />exposure (discharge point) near sediment Pond UU4A. 'Pherefore, the <br />maximum height of the water table snould be at least > to '~ feet below <br />the mine reject pile. <br />3. Tne major sources of recharge for the Ciruela Canyon alluvium is the <br />Uolden Nagle aline discnarge and incident precipitation. Water quality <br />is sodium-bicar'oonate type water for the mine discnarge and the Ciruela <br />Canyon alluvium. <br />4. Tne Ciruela Canyon alluvium has a significant clay traction wuicn <br />minimizes the downxard infiltration and percolation oY water. <br />. -7- <br />