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<br />In addition to the permanent drainage ditch, a 2-foot-high soil berm <br />should be constructed across the slope situated along the southern boundary of <br />the landfill. The berm is a temporary feature designed to reduce the velocity <br />of the water flowing down the slope. This will help prevent erosion prior to <br />the establishment of adequate vegetative cover <br />the soil berm. <br />6.2 GRADING AND SEEDBED PREPARATION <br />Plate 3 shows the location of <br />Upon completion of Lift VII, all areas disturbed by landfilling opera- <br />tions should be graded to conform with final contours shown on Plate 3. Care <br />should be taken to ensure no flat spots or depressions are formed where water <br />could collect and infiltrate into the landfill mass. Final cover of 2.5 feet <br />should be placed over the surface of Lift VII and the south facing slope along <br />the southern boundary of the landfill site. The bottom half of the final <br />cover should be compacted to prevent infiltration of water while the top half <br />should be firm but not compacted. Final cover should be placed as soon as <br />possible over the aforementioned areas as described in Construction Steps 5 <br />and 7. <br />Following the completion of all final cover placement and grading opera- <br />tions, preparation of the surface for seeding can begin. Because there is not <br />an adequate supply of topsoil available to cover the entire landfill surface <br />during final reclamation, we recommend that 12 to 14 tons/acre of manure be <br />spread over all areas disturbed by landfill operations. The manure should be <br />spread by a manure spreader and incorporated into the upper 1 foot of cover <br />material using a disc cultivator. Care must be taken not to disturb the <br />bottom compacted foot of cover material <br />The incorporation of manure will <br /> <br />-37- <br />