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<br />COMMENTS AND CONCERNS <br />WEST PIT DIVERSION <br />MARCH 15, 1989 <br />1. The portion of the ditch which traverses the West Pit appears to be <br />missing from Figure C-13. <br />Response: Four copies of a revised Figure C-13 are enclosed. <br />I Figure C-13 revised 3/15/89. <br />2. Please provide culvert dimensions for the culvert to carry flows <br />under the haul road between the East and West Pit areas and the <br />culvert to carry flows under the haul road between the West Pit and <br />Waste Rock Disposal Area C. <br />Response: Designs for these culverts are included with this submittal. The <br />designs are incorporated into Table D.9-2. Four copies of revised <br />Table D.9-2 are enclosed. <br />Table D.9-2 revised 3/15/89. <br /> 3. There appears to be some discrepancy in the side slopes of the West <br /> Pit Diversion Ditch. Please clarify whether ditch side slopes are <br /> 1H:1V or 5H:1V. <br />' Response: The 5H:1V ditch side slopes shown on Figure D.9-1 are im: orrect. The <br /> side slopes should be labelled with an "s", where "s" is to be based <br /> on field conditions but not to be less than 1 in cuts and 1.5 in <br />I fills. Figure D.9-1 has been corrected. <br /> FigureD.9-1 revised 3/15/89. <br /> <br /> <br />LJ <br /> <br /> <br /> <br />J <br /> <br />