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/`y-. <br />V V V VCENGINEERING <br />May 25, 2007 <br />Mr. Byron Walker <br />Colorado Division of Reclamation, Mining & Safety <br />1313 Sherman St., Room 215 <br />Denver, CO 80203-2273 <br />r1P~ ~L 91~p1.on. <br />p~v hwnn9 a d gateiY <br />RE: Edna Mine Second Quarter 2007 Impoundment Inspection Report <br />Dear Mc Walker: <br />This letter constitutes the Second Quarter 2007 Impoundment Inspection Report for the Edna Mine <br />(C-80-001). The Impoundment Location Map (Attachment A) details the location of each <br />impoundment inspected. Quarterly Pond Inspection Reports (Attachment B) document water level, <br />sediment level, outflow, and required maintenance cited per inspection. <br />The inspections were performed on May 18, 2007 by field inspector Troy Summers, All structures <br />were functioning as designed at inspection. Minor maintenance of Culverts E1 and E12, Terrace <br />T10 and Check Dams 9, 10 and I 1 will occur dwing the 2007 maintenance season. Repairs have <br />been noted on the appropriate Quarterly Pond Inspection Report and the 2006 Maintenance List <br />(Attachment C). Should you have any questions regarding this material, please contact me at your <br />convenience. <br />Sincerely, <br />°r,~,Ga~~t(~j~. <br />Beth Heesen, P.G. <br />Project Manager <br />TNS <br />Attachments (A, B & C) <br />File: 99-144 <br />61 I Skyline 0.oad - Laramie. WY 82070 - (307) 742-0031 <br />FAX (307) 721-2913 - E-mail: intolarQwwcengineering.com <br />cc: Steve Leach <br />Edna Mine Permit <br />