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a <br /> APPENDIX B <br /> DRILLING AND SOIL SAMPLING <br /> Soil borings/monitoring wells were drilled using augers- To <br /> Soil boriameter, continuous-flight, hollow-stem <br /> avoid cross-contamination, the augers were steam cleaned <br /> prior to drilling each boring. field <br /> Soil samples were obtained for soil description, <br /> hydrocarbon vapor testing, and laboratory analysis. Samples <br /> were collected a7)5-fo4t( te]vals fr 9 (MW18)crings B-2 <br /> (AW-6) , B-.3 <br /> nintervaSoil samples collected at 5-foo <br /> 18inchllongrbyretrieved <br /> ahead of the lead auger using <br /> 2.5-inch-diameter split spoon sampler lined with <br /> The sampler and <br /> of hosphate <br /> 2-inch-diameter brass sample sleeve inserts. <br /> sample sleeve were washed with a sodiumgtripentyp The sampler <br /> solution and zan30ainchbefore <br /> freeeach <br /> fall of a 140-pound hammer. <br /> was driven by <br /> Blow counts were recorded for three successive 6-inch <br /> _ intervals. le tubes <br /> -- Upon retrieval from the 18-inch sampler, the same <br /> were removed and securely sealed with aluminum sheeting and <br /> polyurethane caps. The bottom sample tube was removed and <br /> capped. T,119 sample was labeled with and date of <br /> sample depth, identification, <br /> engineer s initials, prior to and <br /> The soil samples were kept in an iced cooler <br /> ified laboratory. <br /> during transport to a state-cert <br /> • he remaining soil recovered was described orneachosoilce with <br /> type, <br /> T <br /> the Unified Soil Classification Y moisture, c000�o <br /> field estimates of deswerecrecardedcon the boring g <br /> grading, and soil type <br /> a . • <br /> i <br />