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10 January 2001 AGE-NC Project No 98-0521 ' Page 4 of 7 - 3 3 COLLECTION OF GROUND WATER SAMPLES Prior to collection of ground water-samples, the depth to ground water was again measured in each well to ensure that a minimum of 80% of the well volume had recharged Water samples were collected from each well using a new disposable plastic bailer and were transferred into three chilled 40-m1 volatile organic analysis (VOA)vials containing 0 5 ml hydrochloric acid (18%) as a sample preservative The samples were then labeled and placed in a chilled container for transportation under chain-of-custody to MAI _ 3 4 WELL ELEVATION SURVEYING ' - The casing elevation of monitoring well MW-4 was surveyed relative to well MW-I to the nearest - 0 01 foot on 07 November 2000 by representatives of AGE ' 3 5 SOIL AND GROUND WATER ANALYSIS All ground water samples and two soil samples were analyzed for the following • Total petroleum hydrocarbons quantified as gasoline (TPH-g ) in accordance with EPA ' Method 8015 Modified,' • Volatile aromatic hydrocarbons - benzene, toluene, ethyl benzene and total xylene (BTEX) - in accordance with EPA-methods 8020, • Oxygenated compounds - di-isopropyl ether (DIPE), ethyl tertiary-butyl ether (ETBE), ' methyl tertiary-butyl ether (MTBE), tertiary-amyl methyl ether (TAME), tertiary butanol (TBA), ethylene dibromide (EDB) and 1,2-dichloroethane (1,2-DCA) in accordance with EPA Method 8260 ' One ground water sample was analyzed for methanol and ethanol in accordance with EPA Method 8260 40 FINDINGS _ Trace concentrations of petroleum hydrocarbons were detected by laboratory analysis in soil samples _ collected from the former UST area and significant dissolved petroleum hydrocarbons were detected in the ground water samples collected from within the former UST area • - Advanced CeoEw ironmental,Inc