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Both sloped and level deck test plots were prepared for each material, with surfaces <br /> compacted to the point where the compactor would "stand up" on the surface of <br /> the MSW, leaving a relatively uniformly graded surface. Cover material was hauled <br /> using Forward's 30-ton off road dump truck (Caterpillar model D300) and placed <br /> using the same equipment (Caterpillar D8) and operator who normally perform that <br /> task. <br /> In order to determine the in-place density of a material, two pieces of information <br /> need to be determined: weight and volume: <br /> The weight of each load of material was determined by running the D300 haul truck <br /> across Forward's certified truck scale. The tare weight of the D300 was monitored <br /> regularly during the test to ensure that accurate net weights were recorded. Staff <br /> from the LEA observed loading and weighing of the ADC materials to verify <br /> procedures, actual weights and pre-placement in-truck density. <br /> Volume is determined by multiplying length, width, and thickness of the placed <br /> materials. Length and width were controlled by careful placement of the weighed <br /> cover materials within a 50' square area marked by PVC pipe for each test plot. <br /> Placement of weighed loads of cover material continued until the MSW surface <br /> appeared to be covered to the requirements of 27 CCR. The thickness was then <br /> determined by using small rakes and shovels to dig a series of pot-holes down to the <br /> surface of the MSW. The thickness of cover material was recorded for each pot- <br /> hole by placing shovel handle across the top of the hole and measuring the distance <br /> from the bottom of the handle down to the MSW surface. The measurements were <br /> averaged together to provide the thickness used to complete the volume <br /> determination for each test plot. In most cases, eight (8) pot holes were dug into <br /> each test plot. <br /> Once volume is calculated, the weight is divided by the volume and the resulting <br /> number is expressed as weight per unit volume. For the purposes of this program, <br /> results are calculated as pounds per cubic foot, and presented with a conversion to <br /> the more familiar pounds per cubic yard. <br /> 1-2 <br /> j:\Allied\Forward\2006.0154 ADC Test\ADC Test Report\Draft Final ADC Test Report Sec l.doc <br />