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GR Field Methods and Procedures <br />Each discrete stockpile sample is collected by removing the upper 3 to 6 inches of soil, and them <br />driving the stainless steel or brass sample tube into the stockpiled material with a hand, mallet, or drive <br />sampler The sample tubes are then covered on both ends with teflon sheeting or aluminum foil, <br />capped, labeled, and placed in a cooler with blue ice for preservation A chain -of -custody form is <br />initiated in the field and accompanies the selected soil samples to the analytical laboratory Stockpiled <br />soils are covered with plastic sheeting after completion of sampling <br />0 A-3 <br />