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The uugor3 were nteamed cleanwd before uve in each <br /> boring/borehole. The drill cuttings were placed in 55 gallon DOT <br /> drums and have been stored within a secured fence onsite. Each <br /> drum in labeled with information identifying the soils and the <br /> well number from which the cuttings Were produced. <br /> 2.3 SAMPLING AND ANALYSIS OF SOILS <br /> t During drilling, the soils were sampled at 5 foot intervals, <br /> beginn.ng at 5 feet below the ground surface, with a Modifled <br /> California split spoon sampler. The split spoon sampler was lined <br /> with three brass tubes, each 2 inches in diameter and 6 inches in <br /> lenych. Before each sampling interval, the sampler and the liners <br /> were scrubbed in a trisodium phnaphaLe; detergent and rinsed with <br /> tap water and distilled water. immediately after the sampler and <br /> i , <br /> the contained brass liners were retrieved, the lowermost tube was <br /> { removed and seated with aluminum foil, plastic end caps, and <br /> electrical tape, she soil filled brass liner was then labeled and <br /> F' placed on ice in a cooler for storage and transport. The soil <br /> from the other two liners was screened for the <br /> presence of <br /> petroleum hydrocarbons with a Foxboro Century 128 organic vapor <br /> { analyzer (FID) and described and classified according to the <br /> 9 <br /> Oniiizd Soil Classification System. The OVA readings are posted <br /> 4 on a column of the drill logs in Appendix A. <br /> { Five soil samples from each.borehole at depths of 16, 21, 26, 31, <br /> f and 36 feet below ground surface were selected for analysis and <br /> shipped under chain-of-custody t,, Pace Laboratories (DHS Hazardous <br /> 4 Waste Analysis certificate number 148) . The soils Samples were <br /> analyzed for total petroleum hydrocarbons by DHS modified EPA <br /> method 8015 and for benzene, toluene, ethylbenzene, and xylenes by <br /> EPA Method 8020. <br /> I TIP <br /> a <br /> a <br /> d <br />� a <br /> g <br /> f <br />