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' 28 April 2004 � a <br /> AGE-NC Project No 99-0570 <br /> Page 6 of 6 + l <br /> The vertical extent of petroleum hydrocarbon-impacted ground water has been defined for <br />' BTEX and fuel additives The lateral extent of petroleum hydrocarbon-impacted ground <br /> water has not been defined in the area north of MW-4 or CPT2 <br /> I + <br /> S 0. RECOMMENDATIONS <br />' Based on the results of this and previous investigations, AGE recommends <br />' • Continued quarterly ground water monitoring of the site <br /> • Additional lateral assessment of the extent of hydrocarbon-impacted ground water north of <br />' wells MW-2 and MW-4 <br /> • Once the impact to soil and ground water impact has been delineated,a work plan should be <br />' prepared for feasibility testing to evaluate various remedial alternatives`at the site r <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 on <br /> 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 (i a soil and ground water samples) and subsurface conditions may vary away <br /> from 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 />' 7.0. REFERENCES <br /> Maxey, G B , 1964, Hydrostratigraphic units Journal of Hydrology, v 2, pp 124-129 <br /> Robertson,P K , Campanella,R G , Gillespie,D and Greig, J , 1986,Use ofpiezometer cone data <br /> Proceedings of the ASCE Specialty Conference in Situ 86, Use of In Situ Tests in <br /> Geotechnical Engineering, Blacksburg, p 1263-1280 <br /> Sanders, L L,, 1998, A manual of field hydrogeo logy Prentice-Hall, Inc , New Jersey, 381 p <br /> 1 / <br /> IAdvanced GeoEnvironmental,Inc <br /> I <br />