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GRAND JUNCTION <br />LINCOLN DeVORE, Inc. <br />GEOTECHIYICAL ENGINEERS -GEOLOGISTS <br />' 1447 Motor St. TEL: (970) 242-8968 <br />Grand Junction, CO 81505 FAX: (970) 242-7561 <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 />Dear Mr. Settle; <br />At your request, Slope Stability Computations have been performed for the 23 Road Gravel Pit. <br />These computations assumed both Working and Reclaimed Conditions. <br />The Side Slopes for both conditions were taken from the drawing provided to Grand Junction Lincoln <br />DeVore by Mr. Settle. The working slopes are assumed to be ]:1 (horizontal vertical) and the <br />reclaimed slopes are assumed to be 3:1 (horizontal:vertical). <br />The thickness of the soil and gravel 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 further 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 />~~p hat+is.. <br />GRAND JUNCTION '~'q~C.~~ao "'- Moq 'Fp~;~ <br />`+%; 3 9 Y: <br />LINCOLN DeVORE, Inc. ~ ;W m~ r•. <br />~~~'L~~_/' ' t 30590 ' Q. <br />-~'='~~6~~ J~-ll-9 ~ :'4~r <br />by: Edward M. orris PE FS'••••••..•• • "~~ <br />Principal Engineer ~~..•_.-: <br />GJLD Job No.: 86456-GJ <br />