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{� Storing and Sampling of Soil Stockpile <br /> Excavated material is stockpiled on and covered with plastic sheeting Stockpile samples are collected <br /> and analyzed for disposal classification on the basis of one composite sample per 100 cubic yards of <br /> soil Stockpile samples are composed of four discrete soil samples, each collected from an arbitrary <br /> location on the stockpile The four discrete samples are then composited in the laboratory prior to <br /> analysis Each discrete stockpile sample is collected by removing the upper 12 to 18 inches of soil, and <br /> them driving the stainless steel or brass sample tube into the stockpiled material vath a mallet or drive <br /> sampler The sample tubes are then covered on both ends with teflon sheeting, capped, labeled, and <br /> placed in a cooler with blue ice for preservation A chain-of-custody form is initiated in the field and <br /> accompanies the selected soil samples to the analytical laboratory Stockpiled soils are covered with <br /> plastic sheeting after completion of sampling <br />