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<br />MWCA, Inc. <br />6500 Mineral Drive, Suite 200 MAR U 9 r U i 1 <br />Coeur d'Alene, ID 83815-9408 Division of Reclamation, <br />Dining and Saf64y <br />Colorado Division of Reclamation, Mining and Safety <br />Attn: Bob Oswald <br />691 CR 233, Suite A-2 <br />Durango, CO 81301 <br />Permit #.M-19:77-27-7- <br />Subject: - <br />Mesita Hill Pit Technical Revision -t1Z- Z <br />February 28, 2011 <br />C?c/ <br />/v <br />sy? ®, Q <br />/s/ ango <br />4/tyon of F/el <br />4/6.0 Of aR, S spa o <br />fety h <br />Fc?aAL A0gV <br />FE 5?®11 5E 5. <br />Reference: DRMS Letter dated January 19, 2011 <br />Mesita Hill Mine Map - Survey Certificate dated February 14, 2011 <br />Dear Mr. Oswald, <br />MWCA, Inc. appreciates your response to the technical revision submittal <br />regarding permit # M-1977-277 for the Mesita Hill Pit including the extension of <br />the technical review period through February 28, 2011. <br />The following respond to the items in the referenced DRMS letter - note, the <br />MWCA comments regarding the referenced DRMS letter are in italics: <br />1 - Concrete pad and bin walls - this structure still exists, including the walls that <br />form the separate product bins. It is anticipated this structure will be used to load <br />out the stockpiles of fines, assuming the fines can be sold. The pad and walls <br />will be broken by mechanical means into 2 Foot Diameter or less pieces and <br />buried nearby at a depth of approximately 4 Feet. <br />The DRMS statement that the proposed demolition and capping is adequate for <br />the reclamation plan is acknowledged. <br />2 - If the site is sold with the fines piles intact, the pad and walls will remain in <br />place since the pad and walls are considered an asset which could facilitate the <br />removal of the fines piles by a potential purchaser. <br />MWCA acknowledges that the pads and bin still exist at the site. This concrete <br />constructed feature may be used to facilitate future handling of the fines. The <br />demolition and burial of the concrete and the grading of the slopes of unsold <br />stockpiled fines are a part of the reclamation plan to be performed eventually. <br />The disposition and burial of the concrete pads and bin and the areas of the