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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@comcast.net <br />REr'~~t ~~p <br />July 13, 2005 <br />JUL 1 ~ 2005 <br />Kent Gorham <br />Division of Minerals and Geology ~yg~dptgwab ana GedaW <br />1313 Sherman Street 2nd Floor <br />Denver, Colorado 80202 <br />Re: Final Summary Sediment Pond Certification at the Rimrock Mine. <br />Dear Kent: <br />This document is the final summary 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 />The last site inspection was conducted on September 11, 2004. <br />Sincerely yours, <br />Dk?~L%~~'!~L' <br />t~ <br />Greg Lewicki, P.E. <br />Greg Lewicki and Associates <br />cc: Grant Johns <br />