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.~ <br />• <br />~ ~~ ~ III IIIIIIIIIIIIIIII <br />Greg Lewicki And Associates <br />9054 S. Forrest Drive PhonelFax: (303) 346-5196 <br />Highlands Ranch, CO USA 80126 E-Mail: Itwicld~}a envisionet.net <br />JUL 10 2000 <br />Division of Minerals & Geology <br />July 5, 2000 <br />Re: Sediment Pond Certification at the Rimrock Mine. 2 wd" <br />Kent Gorham <br />Division of Minerals and Geology <br />1313 Sherman Street2nd Floor <br />Denver, Colorado 80202 <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 June 28, 2000. The sediment pond was dry <br />although it was evident that a thun ershower a occurred recently. <br />~ Sincerely yours, <br />b~ <br />Greg Lewicki, P.E. <br />Greg Lewicki and Associates <br /> <br />