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Greg Lewicki And Associates <br />11541 Warrington Cour[ <br />Parker, CO USA 80138 <br />July 20, 2002 <br />Kent Gorham <br />Division of Minerals and Geology <br />1313 Sherman Street 2nd Floor <br />Denver, Colorado 80202 <br />Re: Sediment Pond Certification at the Rimrock Mine. <br />Dear Kent: <br />RECEIVED <br />JUL 2 9 2002 <br />Division of Minerals 8 Geology <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 June 30, 2002. No water was present in the <br />impoundment at the time of the inspection. Conditions were very dry. Ken, note my _ <br />change of address as shown in the letterhead. Thanks. <br />Sincerely yours, <br />Gy~Q <br />Phone: (303) 346-5196 Fax (303)-346-6934 <br />E-M ai I: lewicki7@attbi.com <br />Greg Lewicki, P.E. <br />Greg Lewicki and Associates <br />