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20 July 2001 <br /> AGE-NC Protect No 97-0300 <br />' Page 2 of 4 <br />' ground water was contalnenzed In 55-gallon drums and was stored on-site In an area lacking general <br /> public access <br />' 2 2 GROUND WATER SAMPLING <br />' Following well purging, ground water levels In the monitoring wells were allowed to achieve a <br /> minimum of 80 percent recharge prior to sample collection Ground water samples were collected <br /> from each of the purged wells utilizing new, disposable polyethylene bailers, one 1-liter amber bottle <br />' without a preservative and three 40-m1 EPA-approved VOA vials containing 0 5 ml 18% <br /> hydrochloric acid as a sample preservative Care was taken to ensure that visible air bubbles were <br /> not present In the vials after filling and capping Ground water sample containers were labeled with <br />' the well designation, date, time, and 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 a DHS-certified laboratory for analysis for <br /> • Total petroleum hydrocarbons quantified as gasoline and diesel (TPH-g and TPH-d, <br />' respectively) by EPA Methods 3550/5030/8015 Modified, <br /> • Volatile aromatic compounds - benzene, toluene, ethylbenzene and xylenes (BTEX) and <br />' methyl tertiary butyl ether(MTBE) by EPA Method 8020, <br /> • Fuel oxygenated compounds - methanol, ethanol, tert-butanol (TBA), di-isopropyl ether <br />' (DIPE), ethyl tertiary butyl ether(ETBE), tertiary amyl methyl ether(TAME) and MTBE by <br /> EPA Method 8260 Modified <br />' Ethylene dlbromlde (EDB) and 1,2-dlchloroethane (1,2-DCA) by EPA Method 8260 <br /> Modified <br />' 3.0. FINDINGS <br />' Ground water elevation, flow direction and gradient were determined from field data collected on <br /> 22 March 2001, the contaminant Impact to ground water was assessed from the ground water <br />' laboratory data <br /> Advanced GeoEnviron mental,Inc <br />