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<br />' T&50161 <br />' next effort occurs after 8 to ]0 years of mining. That effort involves pushing the <br />eastern :lnd northern overburden piles into the quarry to establish stable slopes. Then <br />' when a new mining area is opened up, topsoil from this area is spread on the quarry <br />side slopes and the overburden overlying the new area to be mined will be moved to <br />' cover the finished quarry bottom at the north end of the quarry. <br />C~rrrent estimates indicate that no new areas need to be opened for mining for about 5 <br />' to 6 years after this first quarry extension occurs. This will allow for several growing <br />seasons to ensure that reclaimed areas are becoming well reestablished with vegetation. <br />' As such, we estimate the maximum area of disturbance to occur at the time when the <br />first quarry extension is made, approximately 42 acres. Prior to again extending the <br />' quarry to the south (some 5 to 6 years later), 29 acres of this area will have been <br />reclaimec'. The additional extension would disturb approximately 10 acres. Thus, no <br />more than 23 acres would thereafter be disturbed or in the early phase of reclamation <br />' and any one time in the future. <br />' Soil Preo;iration and Seedine <br />' In connection with preparing the quarry side slopes to receive topsoil and in spreading <br />the topsoil on the slopes, water bars or small horizontal benches will be constructed at <br />' 25- to 50-foot increments (measured along the slope) to mitigate against erosion. These <br />benches will be staggered and will be discontinuous along their length to promote <br />accessibility by wildlife and livestock. Based on future soil sample analysis, nitrogen <br />' and phosphorus will be added to the soil prior to hydro seeding or broadcast seeding <br />and mulching the side slopes. <br />' <br /> The overt>urden material after placement in the quarry bottom will be disced to the <br /> extent possible given the <br />i <br />ili <br />d <br />f stoney nature of the material prior to seeding. Phosphorus <br />i <br /> an trogen <br />ert <br />zer or <br />n manure w <br />ll be added, presumably at rates somewhat higher <br /> than that for the topsoil covered side slopes, based on soil sample analysis to be <br />' cond ucted once the overburden is emplaced. Efforts will be made to employ a grass <br /> land seed drill to seed the quarry bottom, however, the stoney soil medium may <br />' somewhat hamper its use. If, after placing the overburden, it appears that use of a <br />u <br />-20- <br /> <br />