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171-90 <br /> IS <br /> FIELD SOIL SAMPLING PROCEDURES AND SOIL CLASSIFICATIO11 <br /> mere collected at 5 loot depth Intervals. The sou samples were <br /> Undisturbed soil samples <br /> a 2 inch insida diameter b 18 inch long split spoon sampler. Three 2- <br /> collected using y <br /> a <br /> inch outside diameter by 6 Inch lor9 brass sample tubes ware inserted Into the sampler <br /> prior to use. <br /> a The sample tubes were pre <br /> astic bags before Insertion <br /> cleaned by steam and Atconox detergent Wash t <br /> hleand distileampled <br /> water prior to use and stored in clean pl <br /> `9 The spill spoon sampler was also cleaned using the same methods, as previously <br /> described, between each sample interval. <br /> i � <br /> After each soil sample is collected, the sample tube from the bottom of the simpler Is and <br /> tube <br /> Immediately sealed In the field by placing teflon corers over the open ends oft e <br /> *4 covering the ends with plastic caps. An adhesive tape is placed around the plastic caps to <br /> i <br /> ' i <br /> Insure that the caps are secured and remain sealed. <br /> i- ler shoe <br /> The middle tube sample from the split spoon sampler or the soil from the samp <br /> .p <br /> After approximately 112 an hour, a field reading <br /> was placed in a sealed glass container. <br /> atlan Meter (APPENDIX A). <br /> The field readings <br /> was taken using the NNU 101 f hotoioniz <br /> nd used to determine the levels of fuel contamination encountered in the <br /> were recorded a <br /> t s tesihole sample and also assist in selecting the soil samples that"y1e analyzed In the <br /> laboratory. <br /> Fn. <br /> Soils encountered In the monitoring well borings were logged and classified <br /> snaccordance <br /> Standae <br /> System during drilling operations. <br /> with the Unified Soil Classification APPENDIX A). The <br /> penelratIon blow counts were recorded during the soil sampling <br /> i <br />