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<br />Brief, Soil-Bentonite Slurry Walls, and Attachment #7, Typical Cross <br /> Section Drawing of Compacted Backlill to Limit Flow of Groundwater. <br /> <br /> ~ <br /> ~ <br />4. Comment: The proposed reclamation plan provides guidelines for use and <br /> management of existing wetland topsoil. The Division agrees with the <br /> applicant that salvaged wetland topsoil should be "live handled" <br /> wherever possible The Division also recommends that where stockpiling <br /> of salvaged wetland topsoil becomes necessary, the operator be <br /> prepazed to maintain the stockpiled wetland topsoil in a wet or moist <br /> condition until ready for use. Please comment. <br /> Response: WMI volunteered to salvage wetland topsoil; however, if this is going to <br /> become a requvement by the Division, then the Company wishes to <br /> withdraw their plan to salvage and reuse wetland topsoil <br />' <br /> / 15. Comment: On page E-5, the applicant proposes to replace wetland topsoil ,material <br /> at a minimum depth of 4". Due to the availability of topsoil in the azea, <br /> the Division recommends that Western Mobile replace a minimum <br /> wetland topsoil depth of 6". <br /> Response: WMI will replace wetland topsoils to a minimum depth of 6" only if <br /> such amounts aze available on site from wetlands disturbed through the <br /> mining and reclamation process. The Company does not intend to <br /> import any topsoil for purposes of reclamation. <br /> / <br />`~ <br />6 ill be <br />d <br />b <br />i <br />li <br />f <br />l <br />il <br />6" <br /> 1 <br />. Comment: w <br />excavate <br />, <br />ut <br />t <br />The app <br />cant states that <br />or up <br />and topso <br />, <br /> does not state the depth to which it will be replaced. Page I-7 of the <br /> application reveals that the Niwot Series soil has an average depth of <br /> 14". Please commit to replacing an average depth of upland topsoil, and <br /> if possible remove all available topsoil to be used for reclamation. <br /> Response: Again, the Company will use only the amount of topsoil available on the <br />f 6" i <br />h <br />i <br />i <br />If <br />il <br />i <br />i <br />h <br />h <br /> s <br />n <br />ng process. <br />topso <br />amounts <br />n excess o <br />s <br />te t <br />roug <br />t <br />e m <br /> available, WMI will use same for reclamation. <br /> <br /> J 17. Comment: Please indicate the general timing of reclamation for each phase noted in <br /> the permit. <br /> Response: To the greatest extent possible WMI will follow concurrent mining and <br /> reclamation practices. Boulder County special use approval limits the <br /> DMG Adequacy Review Response Page 6 <br />