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' IVM2;I9r —FOR, <br /> y �,n' <br /> �i <br /> Table 2.3 <br /> Monitoring VVeU Purging Data <br /> Well# Volumes Bailed pH Temperature 'iducEy- <br /> "v <br /> MW-1 1.1 6.53 17.0°C 1280µS <br /> MW-2 1.8 6.42 17.0°C 2180pS <br /> MW-3 2.4 6.85 17.5°C 1410pS <br /> MW_4 2.9 6.65 17.0°C 1270 aS <br /> ample CQUmagn <br /> After development and well purging was completed, water samples <br /> were obtained by lowering a decontaminated Teflon® bailer into the <br /> well. The sample water was immediately transferred by gently <br /> pouring the contents of the bailer into two clean volatile organic <br /> analysis (VOA) vials, filling each completely. Care was taken to <br /> minimize any agitation of the water sample. Each sample vial was <br /> then capped with a Teflon® septum cap leaving zero headspace. <br /> Groundwater for TPH analysis was collected using the bailer and <br /> transferred into a 500-milliliter amber glass container. All the <br /> containers (VOA vials and 500-milliliter amber glass) used were <br /> labeled with the well number, date, time, sampler's initials, location, <br /> and analysis required. Each sample waF logged on a chain <br /> custody form and in a field book. The sample i were then turned over <br /> to the on-site mobile lab, accompanied by the chain-of-custody form <br /> (Appendix B). <br /> n sal <br /> All parge water from the development of the wells was placed in a <br /> labeled 55-gallon drum and stored on-site. <br /> Earnple AnaLy <br /> The soil sample was analyzed for Total Petroleum Hydrocarbons as <br /> Diesel (TPH-D) by EPA Method 8015 modified and for benzene, <br /> toluene, xylenes, and ethylbenzene (BTX&E) by EPA Method 8020. <br /> The soil sample analyzed for TPH-D was prepared by EPA Method <br /> MO 3550 using sonication. The soil sample analyzed for BTX&E was <br /> prepared using EPA Method 5030 (purge and trap). Total Petroleum <br /> Hydrocarbons in soil samples were analyzed and characterized by <br /> Gas Chromatography[Flame Ionization Detection (GCFID) with a <br /> fused-capillary column. <br /> 2-7 <br />