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hbhi ~rm~e~l't~t <br />cotter- ~/ <br />Apri16, 2006 <br />Mr. Bruce Humphries <br />Minerals Proglram Supervisor <br />Colorado Division of Minerals and Geology <br />1313 Sherman St. Room 215 <br />Denver, CO. 80203 ~ j/ <br />Re: Permit No. M-1977 306, JD-9 Mine-DMO Designation" <br />Dear Mr. Humphries, <br />~~~~~~~~ <br />~ a7.~06 <br />vDivision of Minerela ontl 6oolo®Y <br />This is written to inform the Division that Cotter intends to continue evaluation of <br />groundwater conditions at its JD-9 Mining Operation in order to further support its belief <br />that the JD-9 operation does not constitute a designated mining operation. In this regard, <br />Cotter intends to conduct drilling efforts and, as necessary, install wells in the Salt Wash <br />Sandstone unit adjacent to the mining operation both up-gradient and down-gradient of <br />the mining operation. The purpose of this exercise will be twofold. First, the up-gradient <br />location will aid in establishing the unaffected water quality within the unit. Second, the <br />down-gradient location will enable Cotter (and the Division) to determine whether the <br />aquifer has been impacted by operations at the JD-9 Mine. In addition, Cotter intends to <br />drill down-gradient of the waste pile of the JD-9 following the same decision protocol for <br />well installation described above for the mining site as a whole. Accordingly, Cotter <br />would like to schedule a meeting with appropriate members of your staff to determine the <br />location and analytical regimen to be applied to samples collected from these locations. <br />We will be contacting Mr. Russel Means of your Grand Junction office to arrange the <br />meeting. <br />If you should have any questions concerning our plans for further study, please contact <br />our Western Slope Mining Manager Mr. Glen Williams at our Nucla, Colorado office. <br />Sincerely, <br />~~~ <br />Steven D. Landau <br />Manager, Environmental Affairs <br />~~ <br />Cotter Corporation Telephone (720) 554-6200 <br />7800 E. Dorado Place, Suite 210, Greenwood Village, CO 80711 Fax (720) 554-6201 <br />