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the clay barrier layer material was pushed over the side slope and <br /> spread with a Caterpillar model D-6 dozer. Once in place, the clay <br /> barrier layer material was compacted with a Caterpillar model D-8 <br /> dozer. <br /> The side slope portion of the clay barrier layer was compacted to <br /> a relative maximum dry density of 90%, and a moisture content <br /> approximately 3% over optimum. All testing concerning the clay <br /> barrier layer was performed by a qualified technician of <br /> Kleinfelder. For additional information regarding the clay barrier <br /> layer CQA, please refer to the Kleinfelder report included as <br /> Appendix A. Grades for the side slope portion of the clay barrier <br /> layer were verified by the County' s survey crew. <br /> VEGETATIVE LAYER <br /> The vegetative layer is the third and final layer making up the <br /> landfill's final cover. The vegetative layer consists of on-site <br /> soils compacted to approximately 85% of relative maximum dry <br /> density. The vegetative layer has a minimum thickness of one foot. <br /> The vegetative layer on side slope areas was placed and compacted <br /> with a Caterpillar model D-6 dozer. Compaction for the top portion <br /> of the vegetative layer was achieved by driving over the surface <br /> with rubber-tired scrapers . Grades for the vegetative layer were <br /> verified by the County' s survey crew (Drawings 2 and 4) . <br /> 12 <br />