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. [n order to create pad areas that are above the 100 year floodplain, they must be filled to an eleva- <br />tion of 4466' on the west side of the property and 4470' on the east side to be 1' above the <br />r~ <br />U <br />r1 <br />LJ <br />floodplain. The floodplain elevation drops gradually from east to west throughout the permit azea. <br />The table below shows how the land pads will be created in each mining area using the overbur- <br />den/soil from the excavations above to balance the cut and fill. In order to balance the fill should <br />equal the total overburden soil available from the table above (2,887,010 cy). <br />Mining <br />Area Pad Area <br />in Acres Average <br />Current <br />Surface <br />Elevation Average <br />Mine Area <br />Cut Elevation Final Pad <br />Average <br />Elevation Pad Average <br />Depth of <br />Backfill in ft Volume <br />in CY <br />Needed to <br />Create <br />Pads <br />1 5.27 4462' 4438,2' 4467' 28.8 244865.3 <br />2 13,99 4465' 4440,6' 4469' 28,4 641003.1 <br />3 11.6 4461' 4436.6' 4468' 31,4 587640.5 <br />4 15.16 4479' 4438.0' 4469' 31,0 758202.1 <br />5 11.6 4476' 4433,0' 4468' 35.0 655013.3 <br />Total 57.62 2,886,724 <br />As is seen from the two tables above, acut/fill balance is more or less achieved. Slight variations <br />with the extra fill needed for lake slopes, shrink swell factors, as well as other variables may alter <br />this balance to some degree, however, it is a best estimate for planning purposes at this time. Map F <br />shows the fmal locations of the proposed pad areas and fmal lakes. <br />15 Road Pit 10/02 <br />14 <br />