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' 30 March 2004 <br /> AGE-NC Protect No 02-0962 <br /> Page 7 of 7 <br /> r <br /> r <br />' Minor concentrations of MTBE and xylenes were detected in soil samples collected from <br /> boring B3 at 15 feet bsg <br /> - fi • ' No other target analytes were detected at-or above laboratory detection limits in either the <br />' soil or "grab" ground water samples analyzed This data suggests that the initial mass of <br /> hydrocarbon impacted soil detected during the piping and dispenser upgrades was minor in <br /> nature, The clayey and silty nature of the soil may have retarded the migration of <br />' hydrocarbons through the vadose zone <br />' 7.0. RECOMMENDATIONS ` <br />' Based upon the findings of this investigation, AGE recommends <br /> • Performance of additional as to delineate the lateral and vertical extent ofpetroleum <br />' hydrocarbon-impacted ground water north and east of borings B2 and B3 <br /> • Performance of additional assessment to delineate the lateral and vertical extent of petroleum <br /> • hydrocarbon-impacted soil in the area south of borings B3 and B7 <br /> These objectives can be achieved through additional borings on the site and the installation <br /> of ground water monitoring wells <br /> 8.0. LIMITATIONS T <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 Evaluation of the geologic/hydrologic <br /> conditions at the site for'the purpose of this investigation was made from a limited number of <br /> I available data points(soil and 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 and recommendations contained in this report <br /> Advanced GeoEnvironmental,Inc <br />