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-=- , ~ , iii iiiiiiiiiiiu iii <br />Greg Lewicki And Associates <br />1645 Courk Place, Suite 309 Phone/Faz: (303) 629-9335 <br />Denver, CO USA 80202 E-Mail: lewickiri~envisionet.net <br />July I1, 1999 <br />Kent Gorham <br />Mined Land Reclamation Division <br />1313 Sherman Street 2nd Floor ~Q1gR9 <br />Denver, Colorado 80202 <br />Re: Sediment Pond Certification a[ the'Ititni'ock Mine. <br />Deaz Kent: <br />RECEIVED <br />JUL 221999 <br />Division of Minerals 8 Geobgy <br />This document is the most recent certification of the sediment pond at the Rimrock 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 sediment <br />ponds, mine hydrology systems and slope stability of embankments. <br />A site inspection was conducted on June 27, 1999. The sediment pond was dry and the <br />site was very dry considering that early June was wet in most places in Colorado. Also, <br />the site was heavily grazed although there were no animals present during the visit. <br />Kent, as we discussed, a sample was drawn of the water impounded by the sediment pond <br />in early June and was sent to ACZ Labs for the analysis you had requested. A copy of <br />the analysis is enclosed. The analysis shows that pH, oxygen and TDS are well within <br />normal limits, therefore the water is acceptable for its intended use, which is water supply <br />for grazing. <br />Sincerely yours, <br />~~ <br />Greg Lewicki, P.E. <br />Greg Lewicki and Associates <br />. .a ~ .... .... 1 .. •.!".'l~.~Y ~'~Y'-k1.' -..i`, ~....r /+:y'i ct. 1.. .. r .T..V'. <br />