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G-R Feld Methods and Procedures <br /> Each discrete stockpile sample is collected by removing the upper 12 to 18 inches of soil, and them <br /> driving the stainless steel or brass sample tube into the stockpiled material with a mallet or drive sampler. <br /> The sample tubes are then covered on both ends with teflon sheeting, capped, Iabeled, and placed in a <br /> cooler with blue ice for preservation. A chain-of-custody form is initiated in the field and accompanies <br /> the selected soil samples to the analytical laboratory. Stockpiled soils are covered with plastic sheeting <br /> after completion of sampling. <br /> A-2 <br />