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I - <br /> 03 October 2001 <br /> AGE-NC Project No 99-0559 <br />' Page 2 of 4 <br /> 2 2 GROUND WATER PURGING AND SAMPLING <br /> Ground water samples were collected from the purged wells utilizing new, disposable polyethylene <br /> bailers and four 40-m1 EPA-approved volatile organic analysis (VOA) vials containing 0 5 ml 18% <br /> hydrochloric acid as a preservative Care was taken to ensure that visible air bubbles were not present <br /> in the vials after filling and capping Ground water sample containers were labeled with the well <br /> Idesignation, date, time, and sampler's initials <br /> 23 ANALYSIS OF GROUND WATER SAMPLES <br /> I Each ground water sample was logged on a chain-of-custody form, placed in a chilled container and <br /> transported to McCampbell Analytical Inc (MAI), for analysis The ground water samples were <br /> analyzed for the following <br /> • Total petroleum hydrocarbons quantified as gasoline (TPH-g) in accordance with EPA <br /> Method 8015 Modified, <br /> Volatile aromatics-benzene,toluene, ethylbenzene and xylene(BTEX)with methyl tertiary- <br /> butyl ether(MTBE) in accordance with EPA Method 8020, and <br /> • Fuel additives, including tertiary butanol (TBA), di-isopropyl ether (RIPE), ethyl tent-butyl <br /> ether (ETBE) and tert-amyl methyl ether (TAME), MTBE, methanol, ethanol, ethyl- <br /> dibromide (EDB) and 1,2-dichloroethane(1,2-DCA) in accordance with EPA Method 8260 <br /> IModified <br />' 24 FREE PRODUCT REMOVAL <br /> I <br /> During the quarter, free-product was recovered using a passive skimmer deployed on well MW-2 <br /> After removal, the water and free product were stored on-site in 55-gallon DOT H-17 storage drums <br /> The removal was performed in a accordance with California Underground Storage Tank Regulations, <br /> Article 5, Section 2655 <br /> 3.0. FINDINGS <br /> Ground water elevation, flow direction and gradient were determined from field data collected on <br /> 26 April 2001, the contaminant impact to ground water was quantified by the ground water sample <br /> • laboratory analytical data <br /> Advanced GeoEnvironmental,Inc <br /> I it <br />