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<br />Grand Junction Pipc <br />' Proposed Whilcwatcr Pit. Whitewaler, CO <br />Februan• 19, 199R Page 3 <br />protection from lower floods would be afforded be the railroad embankment, behveen this proposed gravel <br />' extraction pit and the Gunnison River. <br />Grand Junction Lincoln DeVore has very little information regarding the flood plains in this portion of the <br />' Gunnison River rcaclr. Duc to the number of upstream resen•oirs, to include the Curecanti Counh~ project on <br />the Gunnison Rn cr, the Paonia Reservoir on the North Fork of the Gunnison River and Ridgccvay 12escrvau on <br />the Uncompahgre Rica, the potential ofcatastmphic flooding is significantly reduced over an uncontrolled ricer <br />' system. <br />ECONOMIC GEOLOGIC DEPOSITS <br />' The primary geologic deposit in this arcs is this grarcl and cobble resource, proposed for extraction. <br />Sonic oil and gas exploration has bccn accomplished m this general area but. the principle production areas <br />' nearest to this site arc on the slopes of Grand Mesa. 10 to 15 miles to the east. <br />This site is adjaccnl to the Uncompahgre Uplift which. includes enormous deposits and resen•es of uranium <br />' bearing rocks. Several prospcets for uranium ores in the Morrison and older Formations arc present in the area <br />but. serious prospects and deposits are located more than IG miles to the southwest. <br />' GEOLOGIC HAZARDS <br />The principle geologic hazard to be considered on this site is flooding from tither the Gunnison River during <br />' an extreme even[ or Gooding from Whitewater Creek. Exact delineation of this hazard is beyond [he scope of <br />this report. In gcnaal, r~accl extraction operations arc considered to be compatible with Good hazard areas, with <br />prcwulions regarding pollution or redirection of Good waters onto adjaccnl property. <br />In general. slope smbilih problems arc not expected on this sift, except those notmalh~ associated with open pit <br />graccl extraction operations. <br />' It is believed that all pcrtmcnt points. as related to the Geologic Characteristics, which may significanth~ affect <br />the proposed development. hate bccn addressed. If am' further qucsUOns arise or if GRAND JUNCTION <br />LINCOLN-DcVORE can be of any further senicc, please do not hesitate to contact this office at any time. <br />Respectfully submntcd. <br />GRANDJUNCTION <br />LINCOLN-DcVOR E. INC``. <br />1 ~' // ~ .~ <br />bc: Ed and . Morn' s <br />Engineering Geologist <br />' GJLDJobN 86511-GJ <br />1 <br />