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1 <br /> 04 June 2003 <br /> • AGE-NC Project No 95-0141 <br />' Page 2 of 5 <br /> Temperature,pH and conductivity of purged ground water were measured at regular purge intervals <br /> using an Oakton water analyzer The field data and field sheets are included in Appendix B Purged <br /> water was temporarily stored on-site in 55-gallon DOT-approved H-17 storage drums pending proper <br />' disposal <br /> 2 12 Ground Water Sample Collection and Analysis <br /> Prior to the collection of ground water samples, the depth to ground water was re-measured in each <br />' well to ensure that a minimum of 80% of the initial water volume had recharged A water sample <br /> was then collected from each well using a new, dedicated, disposable plastic bailer Immediately <br /> upon retrieval, the sample was transferred into three properly labeled 40-mI EPA-approved VOA <br /> vials containing 0 5 ml 18% hydrochlonc acid as a sample preservative The samples were logged <br /> on a chain-of-custody form, stored in a chilled container and transported under chain-of-custody to <br /> MAI, The ground water samples were analyzed for <br />' Total petroleum hydocarbons quantified as gasoline (TPH-g) in accordance with EPA <br /> Method 8015 Modified, <br />' • Benzene,toluene,ethylbenzene and total xylenes(BTE&X)in accordance with EPA Method <br /> 8260B, and <br />' 0 Di-isopropyl ether (DIPE), ethyl tertiary-butyl ether (ETBE), methyl tertiary-butyl ether <br /> (MTBE), tertiary-amyl methyl ether (TAME), tertiary-butyl alcohol (TBA), 1,2- <br /> dibromoethane(EDB), 1,2-dichloroethane(1,2-DCA), ethanol and methanol in accordance <br /> with EPA Method 8260B <br />' 3.0. FINDINGS <br /> Ground water elevation, flow direction, and gradient were determined from field data collected on <br /> 18 March 2003 The contaminant impact to groundwater was assessed from the laboratory analytical <br /> data collected on 18 March 2003 <br /> I <br />