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12 July 2001 <br /> AGE-NC Project No 98-0433 <br /> Page 2 of 5 <br />' well to ensure that a mfmmum of 80% of the initial water volume had recharged Water samples <br /> were then collected from each well using a new disposable plastic bailer The water was transferred <br /> into one 1-liter amber bottle and three chilled 40-m1 volatile organic analysis(VOA) vials containing <br />' 0 5 ml hydrochloric acid(18%) as a sample preservative After collection, the samples were labeled <br /> and placed in a chilled container for transportation under chain-of-custody to McCampbell <br /> Analytical Laboratories(MAI), a DHS-certified analytical laboratory Each sample was analyzed for, <br />' <br /> Total petroleum hydrocarbons quantified as gasoline and diesel (TPH-g and TPH-d) in <br /> accordance with EPA Method 8015 Modified, <br /> 10 Volatile aromatic hydrocarbons - benzene, toluene, ethyl benzene and total xylene (BTEX) <br /> in accordance with EPA Method 8020, <br />' 0 Oxygenated fuel additives - methyl butyl ether (MTBE), tertiary butyl alcohol (TBA), di- <br /> isopropyl ether (DIPE), ethyl ternary butyl ether (ETBE) and tertiary amyl methyl ether <br />' (TAME) in accordance with EPA Method 8260 Modified <br /> 23 DOMESTIC WELL SAMPLE COLLECTION <br />' A water sample was collected from the domestic drinking water well located on site After the well <br /> pump was operated for one minute, a sample was collected from a dedicated sample tap The sample <br /> was placed into one 1-liter amber bottle lacking a sample preservative and into three chilled 40-m1 <br />' VOA vials containing 0 5 ml hydrochloric acid (18%) as a sample preservative <br /> The sample was labeled and stored in a chilled container and transported under chain-of-custody to <br />' MAI to be analyzed for constituents listed in Section 2 2 <br />' 3.0. ' FINDINGS <br /> Ground water elevations were determined by subtracting the measured depths-to-water from the <br />' surveyed casing elevations Ground water flow directions were determined by contouring the water <br /> elevations on a scaled site plan(Figure 3) The impact of the unauthorized release on soil and ground <br /> water was quantified by laboratory analysis of samples collected during the quarter <br /> I <br /> Advanced GcoEnvtronmental Inc <br /> I <br />