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Greg Lewicki And Associates <br />11541 Warrington Court Phone: (303) 346-5196 Fax (303)-346-6934 <br />Parker, CO USA 80138 E-Mail: lewicki7~attbi.com <br />June 30, 2003 " <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 />~ECEIV ED <br />)UL 0,2003 <br />Division of Minarals and 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 29, 2003 for the second quarter. It was a <br />partly sunny day although thunderstorms were approaching. The site was mostly dry <br />although 6" of water was present in the bottom of the pond. <br />Sincerely yours, <br />«~ ~ <br />Greg Lewicki, P.E. <br />Greg Lewicki and Associates <br />