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30 March 2005 <br /> • AGE-NC Project No 95-0130 <br /> IPage 13 of 13 <br /> be adequate to monitor ground water impact at these wells and should be re-evaluated on a <br /> semi-annual basis <br /> • The most Intense hydrocarbon-impact was reported in the ground water samples collected <br /> from soil vapor extraction wells VW-11213 with TPH-g as high as 230,000 µg/1, benzene as <br /> high as 35,000 µg/1 and MTBE as high as 3,100 µg/l Furthermore, the site recently <br /> underwent building demolition, and the site Is temporarily wide open with no building or <br /> surface obstructions Therefore, AGE recommends installing two-Inch diameter pneumatic <br /> ground water pumps In VW-lC (48-63 feet),VW-2A(43-63 feet) and VW-3A(43-63 feet) <br /> to augment interim ground water remediation efforts, extracted ground water from wells <br /> IVW-I C,VW-2A and VW-3A would be routed to the existing ground water pump-and-treat <br /> system <br /> I <br /> 7.0. LIMITATIONS <br /> Our professional services were performed using that degree of care and skill ordinarily exercised by <br /> . environmental consultants practicing In this or similar localities The findings were based mainly <br /> upon analytical results provided by an Independent laboratory Evaluations of the hydrogeologic <br /> conditions at the site for the purpose of this Investigation are made from a limited number of <br /> available data points (soil vapor samples, ground water samples), and subsurface conditions may <br /> vary away from these data points No other warranty, expressed or Implied, is made as to the <br /> professional Interpretations, opinions and recommendations contained In this report <br /> Advanced GeoEnvironmentai,Inc <br />