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~><-eg Lewicki ~e~d Associates <br />11541 tb'urringroo C'omt <br />Parker, (:'O US:~ AOl:ift <br />September 24, 2003 <br />Kent Gorham <br />Division of Minerals and Geology <br />1313 Sherman Street 2nd Floor <br />Denver, Colorado 80202 <br />RECEIVED <br />SEP 3 U 2003 <br />Division of Minerals and Ceolegy <br />Re: Sediment Pond Certification at the Rimrock Mine. <br />Dear Kent: <br />This document is the most recent certification of the sediment pond at the Rimrock <br />Mine. <br />I am a certified professional engineer in the State of Colorado with experience in the <br />Eastern and Western United States in the design, construction and operation of <br />sediment ponds, mine hydrology systems and slope stability of embankments. <br />A site inspection was conducted on September 13, 2003 for the third quarter. It was a <br />mostly sunny day. The site was mostly dry although 12-18" of water was present in the <br />bottom of the pond. Engleville Gulch had puddling; showing evidence of a recent <br />storm. <br />Sincerely yours, <br />b~e~.~~G~~<G~ <br />Greg Lewicki, P.E. <br />Greg Lewicki and Associates <br />Plrooe: {303) 34fi-5196 I<ax (;303)-3d6-ti93~ <br />E-Ntuil: le~~t9cld7(aattbt.com <br />