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SLOPE PROTECTION AND EROSION CONTROL <br /> Erosion is controlled by vegetation on all landfill surfaces, <br /> properly designed slopes, and by the site' s drainage system as <br /> detailed above. <br /> The entire final site face is vegetated with Bromme grass to <br /> provide a low maintenance form of erosion control . The grass will <br /> be fertilized annually as needed, but will not require irrigation <br /> other than natural rainfall. <br /> FINAL WASTE SURFACE <br /> AWL <br /> In order to determine the final waste surface, a fifty foot grid <br /> was established for the secondary site, and a one hundred foot grid <br /> was established for the primary site. The final top waste surface <br /> was profiled by the County using a backhoe to determined the depth <br /> to waste at each grid point. A County engineer measured and <br /> recorded the depth to waste for each hole as it was excavated. <br /> Holes were excavated by the backhoe to a maximum depth of thirty <br /> inches. After measurement by the engineer, the holes were <br /> immediately refilled by the backhoe. The top surfaces of the <br /> landfill sites were surveyed on the respective grids. <br /> Subsequently, the depth to waste for each grid point was subtracted <br /> from the respective surface elevation to determine the top of waste <br /> 3 <br />