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14 May 2004 AGE-NC Project No 96-0235 Page 5 of 5 concentrations of 11,000 µg/1, 19,000 µg/1 and 190 pg/l, respectively TPH-d was detected in the samples collected from MW-1 and MW-2 at concentrations of 4,100 µg/1 and 23,000µg/l,respectively Various BTEX compounds were detected 1n the samples collected from MW-1, MW-2 and EW-2 The detected benzene concentrations in MW-1 and MW-2 exceeded the MCL for drinking water,the toluene and ethylbenzene concentrations detected in sample MW-2 exceeded the respective MCLs for drinking water • MTBE was not detected in any of the ground water samples collected from the former UST No 3 excavation area However, 1,2-DCA was detected in water samples MW-1,MW-2 and EW-2 at a concentration exceeding the MCL for drinking water • The vertical extent of the contamination plume, as well as the lateral extent to the south, are not well defined 5.0. RECOMMENDATIONS Based on the findings of the environmental activities recounted in this report, AGE recommends a Continued quarterly ground water, and • Preparation of a work plan for vertical definition of fuel additives and interim remediation of ground water at the UST Cluster area 6.0. LIMITATIONS Our professional services were performed using that degree of care and skill ordinarily exercised by environmental consultants practicing In this or similar localities The findings were based upon analytical results provided by an independent laboratory Evaluation of the hydrogeologzc conditions at the site for the purpose of this investigation was made from a limited number of available subsurface data points (i e ground water samples from ground water monitoring wells) and subsurface conditions may vary away from these data points No other warranty, expressed or implied, is made as to the professional interpretations, opinions and recommendations contained in this report Advanced GeoEnvt ron mental,Inc