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moisture conditioning except for the clay barrier layer was <br /> performed with water trucks. <br /> FINAL GRADING <br /> The final top surface landfill cover was constructed to a minimum <br /> three percent grade. These slopes are designed to provide proper <br /> drainage, prevent high velocity overland flow, and prevent slope <br /> reversal due to landfill settlement. <br /> The maximum slopes (side slope areas) are graded at a ratio of 1. 75 <br /> feet horizontally for every 1 foot of vertical lift (1. 75 : 1) . <br /> Settlement is monitored by taking the following steps: <br /> 1. Maintaining two permanent monuments. <br /> 2 . Every five years, commencing upon completion of <br /> closure activities : <br /> A. Perform an aerial survey of the site. <br /> B. Provide a topographic map with a maximum <br /> contour interval of two feet. <br /> 5 <br />