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that can be covered to keep rain out. Recycling bins <br /> containing recyclable materials that are subject to damage <br /> from rain will be covered during periods of rain. <br /> 10. Vegetation and irrigation: <br /> The final cover for the landfill will include a vegetative <br /> layer which will be planted with a drought and erosion <br /> resistant grass. This grass will be "Blando Bromme" or a <br /> similar species which will require fertilization but which <br /> should not require irrigation. <br /> 11. Stockpiling soil, permeability of soil cover, compaction of <br /> waste, waste settlement rate, and ratio of waste to soil <br /> volume: <br /> a) Compaction of waste: <br /> The waste delivered to the landfill for disposal is compacted <br /> by the site's 8260 Caterpillar landfill compactor equipped <br /> with Caron wheels. This is accomplished by pushing the waste <br /> from the spot of deposition and then continually traversing <br /> waste with the compactor. The compacted waste is landfilled <br /> in this manner by building of waste cells each day. These <br /> cells are generally 6 to 10 feet in height and are covered at <br /> the end of each day. <br /> Observations at the site indicate that the compaction factor <br /> for the waste at the landfill is approximately 0.4 . This <br /> means that the incoming gate quantities are reduced to 40% of <br /> their original volume when compacted and covered in the <br /> landfill. This in-place volume also includes the soil volumes <br /> associated with the daily cover materials. <br /> The compaction factor of 0.4 used for the site is approximated <br /> based on performing topographic surveys, monitoring daily <br /> cover soil use, monitoring incoming waste quantities, and <br /> performing volume calculations. This compaction factor was <br /> used in site life calculations for the Foothill Sanitary <br /> Landfill. <br /> b) Waste settlement rate: <br /> The waste settlement rate at the Foothill Sanitary Landfill <br /> has not been determined because no portion of the site has <br /> been inactive for a lengthy period of time. <br /> C) Ratio of waste to soil volume: <br /> The ratio of waste to soil volume used for design of the <br /> landfill is 4: 1 (refuse volume is 4 times daily cover soil <br /> volume) . This factor was estimated based on soil requirement <br /> 26 <br />