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Greg Lewicki And Associates <br />11541 Warrington Court <br />Parker, CO USA 80138 <br />October 8, 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 />OCT 10 2002 <br />Division of Minerals 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 September 21, 2002. A storm had just occurred and <br />considerable water was present in the pond. <br />Sincerely yours, <br />C~ aE~~~~ <br />Greg Lewicki, P.E. <br />Greg Lewicki and Associates <br />Phone: (303) 346-5196 Fax (303)-346-6934 <br />E-Mail: lewicki7@a ttbi.com <br />