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Greg Levv~cki And Ass®c~ates <br />11541 Warriog[on Court Phone: (303)346-5196 Fax(303)-346.6934 <br />Parker, CO USA 80138 E-Mail: lewicki7@attbi.com <br />April 13, 2003 ~~~Ef~~D <br />Kent Gorham At°+~ t $ ~ <br />Division of Minerals and Geology Divisloq or`"Alne~al; 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 />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 April 5, 2003 for the first quarter. I could not get <br />to the site at the end of March due to the record snowstorm. The site was mostly dry <br />not even two weeks after the storm and no problems were detected with the pond. <br />Sincerely yours, <br />Greg Lewicki, P.E. <br />Greg Lewicki and Associates <br />