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® surface. Two tests were conducted for each material: one sloped MSW surface and and one level-deck MSW surface were used in order to capture potential differences in compactive effort and placement efficiency. Each test plot was a 50' square area marked by PVC pipes set vertically at the corners to assist the equipment operators in controlling material placement. The equipment operators were specifically instructed to place ADC materials within the test plots in a manner consistent with normal operations. Cover material was hauled from stockpiles, across the site's certified scales and to the test plots using Forward's 30-ton off road dump truck (Caterpillar model D300) and placed using the same equipment (Caterpillar D8) and operator who normally perform that task. In order to determine the in-place density of a material, two pieces of information need to be determined: weight and volume: The weight of ADC placed within each plot was determined by running the D300 truck across Forward's certified truck scale as it carried each load from the stockpile to the test plot. The tare weight of the D300 was checked regularly during the test to ensure that accurate net weights were recorded. Staff from the LEA observed loading and weighing of the ADC materials to verify procedures, actual weights and to estimate pre-placement in-truck density. A potential variable in the weight of greenwaste ADC is moisture content, which can vary seasonally, (see section 3 for further discussion). To provide information for future reference, a sample of both greenwaste and TASW was collected from the stockpile and tested for moisture content. The test used, ASTM method D2216, expresses results as a percentage of the sample's dry solid material. For example: a sample with a wet weight of 100 grams, found to have a 25% moisture content, would be made up of 80 grams dry solid material and 20 grams water (Appendix B). Volume is determined by multiplying length, width, and thickness of the placed materials. Length and width were controlled by careful placement of the weighed cover materials within each 50' square test plot. Placement of weighed loads of cover material continued until the MSW surface was covered to meet the requirements of 27 CCR. After placement and compaction was complete, small rakes and shovels were used to dig a series of eight or nine pot-holes down to the surface of the MSW. The thickness of ® cover material was then measured and verified by the LEA for each pot-hole by placing a shovel handle across the top of the hole and measuring the 1-2 ):\Allied\Forward\2006.0154 ADC Test\ADC Test Report\Final ADC Test Report Sec 1.doc