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' 28 June 2004 <br /> . AGE-NC Project No 97-0300 <br /> IPage 2 of 5 <br />' stabilization from each well using a Oakton water analyzer Field data and logs are included with <br /> Appendix A Purged ground water was containerized in 55-gallon drums and was stored on-site in <br /> an area lacking general public access <br /> 2 2 GROUND WATER SAMPLING <br />' Following well purging, the ground water level in monitoring well MW-2 was allowed to achieve <br /> a minimum of 80 percent recharge prior to sample collection, wells MW-1 and MW-3 were purged <br />' `dry' and were therefore sampled prior to achieving 80 percent recharge Groundwater samples were <br /> collected from each of the purged wells utilizing new, disposable polyethylene bailers, and <br /> transferred to one 1-liter amber bottles without a preservative and 40-m1 EPA-approved volatile <br />' organic analysis (VOA) vials containing 0 5 ml 18% hydrochloric acid as a sample preservative <br /> Care was taken to ensure that visible air bubbles were not present in the vials after filling and <br /> capping Ground water sample containers were labeled with the well designation, date, time, and <br />' sampler's Initials <br />' . 2 3 LABORATORY ANALYSIS OF GROUND WATER SAMPLES <br />' Each ground water sample was logged on a chain-of-custody form,placed in a chilled container and <br /> transported to Castle Analytical Laboratory (CAL), a California Department of Health Services <br /> (DHS)-certified laboratory(#2480) for analysis for <br />' • Total petroleum hydrocarbons quantified as gasoline, diesel and motor oil (TPH-g, TPH-d <br /> and TPH-mo, respectively)by EPA Methods 5030/8015 and LUFT/8015B, <br />' • Benzene, toluene, ethylbenzene and total xylenes (BTEX) and methyl tertiary butyl ether <br /> (MTBE)by EPA Method 8020, <br />' • Ethylene dibromide(EDB), 1,2-dichloroethane(1,2-DCA), tert-butanol(TBA),di-isopropyl <br /> ether (DIPE), ethyl tertiary butyl ether (ETBE), tertiary amyl methyl ether (TAME) and <br /> MTBE by EPA Method 5030/8260 <br /> ,r <br /> • Advanced GeoEnvironmental,Inc <br /> 1 <br />