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Pursuant to Rule 3.1.5(3), the application must demonstrate how the final <br />configuration of the highwall will be sufficiently stable to protect areas outside the <br />affected land from slides and other damage. Please submit an appropriate <br />engineering stability analyses, described under Rule 6.5, for the highwall configuration <br />proposed in the application. <br />6. DMG has completed a preliminary reclamation cost estimation totaling $18,174. The <br />reclamation cost estimation is based upon the proposed reclamation plan and several <br />assumptions. The assumptions are that the highwall would be scaled for loose rock <br />(task 2), and that soil replacement at 2-foot dept (task 4) would provide sufficient root <br />depth for vegetative cover. The enclosed reclamation cost estimation is preliminary <br />and may be revised after DMG receives response to the adequacy issues raised in <br />this letter. <br />Please contact me at the DMG Durango Office, 701 Camino del Rio, Room 125, Durango, CO <br />81301, phone (970) 247-5469, if you have any questions. <br />Sincere) ~ / <br />Wallace H. Erickson <br />Environmental Protection Specialist <br />Enclosure: DMG reclamation cost estimation <br />cc: Bruce Humphries <br />