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-J <br />- designed to minimize erosion. Terraces may be utilized to <br /> control erosion and enhance stability if approved by the <br /> Division and consistent with 4/14/2(2). <br /> COMMENT: The final design incorporates a continuous slope <br /> on the upper portion of the slope and a bench area in the <br /> lower. The advantages for minimizing moisture effect on the <br /> placed material should outweight the erosion concerns for <br /> design and erosion procedures will be enhanced due to the <br /> lower bench area, The final reclamation configuration <br /> includes a design for diverting as much of the water around <br /> the bench area as possible. For the drainage which occurs <br /> on the bench area, drainage areas with proper riprap are <br /> designed to minimize erosion. <br /> Kyle 4.09.1(10) where the slope in the disposal area <br />_ exceeds 1v:2.8h (36 percent), or such lesser slope as may be <br /> designated by the Division based on local conditions, keyway <br /> cuts (excavations to stable bedrock) or rock toe buttresses <br /> shall be constructed to stabilize the fill. Where the toe <br /> of the spoil rests on a downslope, stability analyses shall <br /> be performed in accordance with 2.05.3(6)(b), (c) and (d) to <br /> determine the size of the rock toe buttresses and keyway <br /> cuts. <br />COMMENT: The slopes have been designed to be less than 36 <br />percent and design analysis shows that factors of safety at <br />or greater than 1.5 are provided. <br />- Rnla 4.09.1(11) The fill shall be inspected for stability <br />by a registered engineer or other qualified professional <br />specialist experienced in construction of earth and rockfill <br />32 <br />