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<br />'~~ Alternative Reclamation Plan <br />~- 9 ~ StIB AGRA Project E92-7075 <br />Page 4 <br />in Exhibit E, the final ground surface will generally approximate the original ground surface, at <br />' a depressed elevation. During the initial phases of mining, waste rock must be placed in an <br />interim stockpile to develop sufficient space in the pits for concurrent mining and reclamation <br />operations. <br />Prior to commencing production of limestone from the mine, an area encompassing two years of <br />limestone production will be stripped from each pit. As the first year's limestone production is <br />mined, overburden will be removed from the portion of the pit to be mined in year three of <br />' operation. Accordingly, top soil and waste rock resulting from the initial three years of limestone <br />production will be placed in an interim stockpile as indicated on Exhibit E. Beginning with the <br />' second year of mining, overburden will be removed from the areas to be mined in year four and <br />will be used to fill the year one pit area. Top soil would however have to be stockpiled until <br />sufficient areas are backfilled to allow final topsoil placement. After the second year of mining, <br />' reclamation would become concurrent with mining. Top soil and overburden removed from an <br />area of the mine would be hauled directly to reclamation placement. The interim stockpile will <br />' be removed near the end of mine life and used to backfill the final three years of pit. <br />After removal of topsoil from within the stockpile area, the interim stockpile will be constructed <br />' to the approximate line and grade indicated in Exhibit E. The stockpile is to contain 2.6 million <br />cubic yards of waste rock and 111,600 cubic yards of topsoil. <br />The mine plan will result in the excavation of 14.2 million cubic yards of in place waste rock and <br />9.5 millions cubic yards of limestone for cement production, resulting in a total mine volume of <br />' 23.7 million cubic yards. Experience at the Lyons Quarry demonstrates the waste rock increases <br />or bulks in volume by a factor of 50 per cent, resulting in a volume of backfill of 20.5 million <br />cubic yards. The net backfill deficit results in the post-reclamation ground surface being below <br />original ground contour. <br />' All field eq~~ipment will be diesel powered and no powerlines will need to be constructed into <br />Dowe Flats. Drills will be required to prepare the overburden and limestone for blasting; dozers <br />' are needed to assist in levelling drill sites following removal of any topsoil with scrapers. The <br />blasted rock will be lifted by front loaders and deposited into off-road haulers for disposition onto <br />land to be reclaimed or for transportation to the plant (limestone). <br /> <br /> L, A G R A <br />' Earth & Environments/Group <br />