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• <br />GRAND JUNCTION <br />LINCOLN DeVORE, Inc. <br />GEOTEC}P11CAL ENGINEERS -GEOLOGISTS <br />' 16J1 M for St. <br />Grand Junction, CO 81505 TEL: (970) 242-8968 <br />FAX: (970) 262-1561 <br />1 <br />December 11, 1997 <br />Mr Ed Settle PE <br />' GRAND JUNCTION PIPE <br />P.O. Box 1849 <br />' Grand Junction. CO 81502 <br />Re: 23 Road Gravel Pit <br />' Grand Junction, Colorado <br />Uear M11r Settle, <br />' At your request, Slope Stability Computations have been performed for the 23 Road Gravel Pit. <br />These computations assumed boot Working and Reclaimed Conditions. <br />' The Side Slopes for both conditions were taken front the drawing provided io Grand Junction Lincoln <br />DeVore by tvlr Settle. The working slopes are assumed to be 1:1 (horizontal vertical) and the <br />' reclaimed slopes are assumed to be 3'. I (horizontal:vertical). <br />The thickness of the soil and S~ravel to be extracted were taken from auger borings placed on this tract <br />' by Grand Junction Lincoln DeVore on 8-27-97. <br />If any filrther questions arise regarding this project or if we can be of any further assistance, please <br />do not hesitate to contact this office at any time. <br />Respectfully Submitted, <br />GR.ANDJUNCTION :1~~~':~ao•'".M~ .;°<--~ <br />1 O: P N •• V .1 <br />`i '-~ 9 ~. <br />LINCOLN DeVORE. Inc. Jw al <br />1 ~ L 30590 ?~ <br />~~,~~ ~~-~r97 :'~, :. <br />' by Edward M orris PE <br />Principal Engineer ~, S o,up~ ~`- <br />' GJLD Job No.: 86456-GJ <br />1 <br /> <br />