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<br />Assessment of conditions for recommended construction specifications <br />~ was based on prnt;.nt.w.y design information supplied to us~by Western <br />~ .. Fuels-Colorado, our general understandimg of the project, and our <br />experience with similaz projects. <br />- This report is not an imestigatim of umbaril®emt foundation co~i- <br />tions and assumes that the foundation cenditioas are as poArayed to us <br />' by Western Fvels. This report does not deal with surface water issues <br />relating to operation of the 007 pond or culvert design through the <br />embanlrnent. <br />1.2 ACILNDWLEDGMENTS <br />Recommendations for cons[mction specifcatons for the roek6ll <br />entbanlonent wero developed order the guidance of Michael W. West, <br />PhD., P.E: Proposed speci5cations were prepared by James D. Gill, <br />P.E. This report was prepared by Mr. Gill and was reviewed by Dr. <br />West. Project data warn supplied by Mr. Tod Idevre, Mine Engineer, <br />Western Fuels-Colorado (New Horimn Mine). <br />~,. <br />• 2. SITE COND1770NS AND PROPOSED CONSTRDCTION <br />The embmkmemf traverses the 007 pond at the New Horimn Mine. We <br />assume the pond will be pumped down so that coastrucfion will take <br />place under dry conditions. Western Fuels has indicated that water <br />could rise up ou both sides of the embankment to as eleva5on 5650 feet <br />during a 25-year, 24 hour flood event Primary and secondary culverts, <br />designed by Western Fuels will be constructed is the embankment to <br />allow for passage of surface water through the embankment amd to <br />reduce any di$'erential hydrostatic head across the embankment. <br />Culvert design is beyond the scope of this report. <br />The proposed rockfdl embankment will be approximately 950 feet long <br />with a finished crest width of 35 feet Total depth of fill will eange <br />from 15 to 20 feet with 3h:ly side slopes An wpaved road on the top <br />~' Attachmem 2.05.3(3)9- 3 <br />• <br />REVISEDMARHC 2006 Attachment 2.05.3(3)-9-4 <br />