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_1V 6/97 TAU 15:17 FAX 312 977 2560 ZHGM CHICAGO BOOS <br /> OCT 13157 I8: 19 FR LEVINE FWKE 510 6524506 TO VNICK CHICAGO P . 05/35 <br /> EGG <br /> Saii Sampling <br /> k <br /> A pLston*pe sampler is used to collect <br /> relatively undisturbed soil samples <br /> without generating any sol cutt Vs. <br /> Three different types of samplers are <br /> used depending on the soil type and <br /> density. <br /> ® I - <br /> j The soil sampler is initially pushed in a <br /> -- "closed"position to the desired <br /> sampling interval. The borer cone tip <br /> portion of the sampler is then retracted <br /> "' (approximallety 12 Inches) leaving a <br /> hollow soil sampler with two inner 1 1/4 <br /> Inch diameter by 6 inch Icing soil sample <br /> I tuber. The hollow sampler is then <br /> i t 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 sop sample tube ends are <br /> sealed with teflon and plastic caps. A <br /> I longer"split tube"can be used for <br /> oaotectrlicel sampling. <br /> A•wireline soil 'sampler has beer+ <br /> developed by Gregg in Situ to retrieve <br /> multiple depth soil samples with a <br /> wireline rather ttrsrt retrieving and <br /> deplaying the sample rods at each <br /> interval. This system ran result in <br /> considerable time selings when <br /> sampling at multiple Intervals. <br /> I <br /> I <br /> I <br />