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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 and other <br /> native grasses to provide a low maintenance form of erosion <br /> control. The grass will be fertilized annually as needed, but will <br /> not require irrigation other than natural rainfall. <br /> FINAL WASTE SURFACE <br /> The final waste surface was determined by staking a 100 foot grid <br /> over the entire landfill surface. The final top waste surface was <br /> profiled by the County using a backhoe to determined the depth to <br /> waste at each grid point. A County engineer measured and recorded <br /> the depth to waste for each hole as it was excavated. Holes were <br /> excavated by either a backhoe or grader to a maximum depth of <br /> thirty inches. After measurement by the engineer, the holes were <br /> immediately backfilled. The top surface of the landfill site was <br /> surveyed on the respective grid. Subsequently, the depth to waste <br /> for each grid point was subtracted from the respective surface <br /> elevation to determine the top of waste elevation. The County used <br /> this final waste surface to design the final cover grades. <br /> 8 <br />