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End <br />of <br />Year <br />Total <br />Acres <br />Pit <br />Acres <br />O.B. <br />Acres <br />Acres Avail <br />for <br />Reclamation <br />1 <br />142 <br />81 <br />61 <br />0 <br />2 <br />325 <br />110 <br />215 <br />50 <br />3 <br />380 <br />115 <br />265 <br />50 <br />4 <br />405 <br />125 <br />280 <br />50 <br />5 <br />455 <br />155 <br />300 <br />50 <br />6 <br />475 <br />160 <br />315 <br />20 <br />7 <br />490 <br />160 <br />330 <br />60 <br />8 <br />495 <br />160 <br />335 <br />85 <br />9 <br />495 <br />160 <br />335 <br />75 <br />10 <br />500 <br />160 <br />340 <br />60 <br />D.3 Water Diversion and Impoundment <br />Diversion berms (water bars) will be used to divert surface runoff from active areas <br />within the pit. If extensive pit wall seepage is encountered a pit sump might be required. <br />Any impoundment is expected to be of a temporary nature. The mining operations shall <br />be in compliance with applicable Colorado and federal water laws and water quality <br />regulations. If pit dewatering operations are required, Cotter will comply with the terms <br />and conditions of an NPDES permit. <br />D.4 Size of Area Disturbances <br />Table D.4 -1 depicts the size of the areas to be worked at any particular time and the type <br />of disturbance associated with the activities. <br />Table D.4 -1 Size and Type of Disturbance During the Mine Life <br />D.5.2 Mining Reclamation Sequence <br />The mine map, Figures C -1 shows the current conditions of the open pit mine workings. <br />A detailed view of the facilities associated with the JD -7 underground mine is shown in <br />Fig. C -2. The ultimate extent of the open pit is shown in Exhibit C Map 2 Mine <br />Facilities. <br />D.5 Operation Timetable <br />D.5 -1 Project Phases <br />Four phases are involved for the open pit operation with a transition between phase one <br />and two occurring about seven months into year four. (See Exhibit E.5, reclamation <br />timetable discussion.) <br />D -2 <br />