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' 06 November 2002 <br /> AGE-NC Project No 95-0142 <br />' Page 4 of 4 <br /> TPH-g and BTEX concentrations have steadily declined in the samples collected from the <br />' deep screened well MW-6 (screened 70 to 80 feet bsg) Presently, MW-6 is screened <br /> approximately 45 feet below the surface of first-encountered ground water <br />' - Monitoring wells MW-6, MW-7 and MW-8 are screened approximately 45 feet below the <br /> surface of first-encountered ground water MTBE has been detected in the samples collected <br /> from well MW-7 for five consecutive quarters, but has not been detected in the samples <br />' collected from well MW-6, beneath the former UST area The distribution of MTBE <br /> suggests that the MTBE plume has migrated, laterally and vertical, towards well MW-7 <br /> 1 <br /> 5.0. RECOMMENDATIONS <br /> Based upon the data collected to date, AGE recommends <br /> - Continued quarterly monitoring of monitoring and deep vapor wells at the site, the next <br /> quarterly ground water sampling and monitoring event should be scheduled for <br /> September 2002 <br />'• - Implementation of the AGE-prepared Final Remediation Plan, dated 23 April 2002 <br />' 6.0. 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 upon <br /> analytical results provided by an independent laboratory Evaluations of the hydrogeologic <br />' conditions at the site for the purpose of this investigation were made from a limited number of data <br /> points(i a monitoring-well ground water samples) and subsurface conditions may vary away from <br /> these data points No other warranty, expressed or implied, is made as to the professional <br />' interpretations, opinions, recommendations contained in this report <br /> 1 r <br />' Advanced GeoEnvironmental,Inc <br /> 1 <br />