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A -W <br />Soil Sampling II- <br />A piston -type sampler is used to collect <br />relatively undisturbed soil samples <br />without generating any soil cuttings <br />Three different types of samplers are <br />used depending on the soil type and <br />density <br />1 <br />The soil sampler is initially pushed in a <br />"closed" position to the desired <br />sampling interval The inner cone tip <br />portion of the sampler is then retracted <br />(approximately 12 inches) leaving a <br />hollow soil sampler with two inner 9 114 <br />inch diameter by 6 inch long soil sample <br />tubes The hollow sampler is then <br />pushed in a locked `open" position to <br />'. collect a soil sample The filled sampler <br />and push rods are then retrieved to the <br />ground surface. For environmental <br />analyses, the soil sample tube ends are <br />sealed with teflon and plastic caps A <br />longer "split tube" can be used for <br />geotechnical sampling <br />A wnreline soil sampler has been <br />developed by Gregg In Situ to retrieve <br />multiple depth soil samples with a <br />wireline rather than retrieving and <br />deploying the sample rods at each <br />interval This system can result in <br />considerable time savings when <br />sampling at multiple intervals <br />0 vO"d dZS=ZO 66-ZO-„idd <br />