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' 12 January 2005 <br /> AGE-NC Project No 97-0326 <br />' Page 1 I of 11 <br /> • The vertical extent of ground water contamination may be influenced by downward, vertical <br /> ground-water flow between HU1 and HU2, HU2 and HU4, and HU4 and HU6 <br /> • The vertical extent, and possibly the lateral extent towards the east, of petroleum <br />' hydrocarbon-impacted soil have been defined, the lateral and vertical extent of petroleum <br /> hydrocarbon-impacted ground water have not been defined <br /> 5.0. RECOMMENDATIONS <br />' Based on the findings of this investigation, AGE recommends continuation of the quarterly ground <br /> water monitoring program The next monitoring event was performed in June 2004 <br />' To date, AGE has installed three of the eight monitoring wells proposed in the AGE-prepared <br /> Additional Monitoring Wells Work Plan,dated 26 July 2002,these three were on-site wells Off-site <br />' monitoring wells will be installed pending resolution of permitting and bond issues <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 Evaluation of the geologic/hydrogeologic <br /> conditions at the site for the purpose of this investigation was made from a limited number of <br /> available data points(e g ,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 ofplezometer 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 offaeld hydrogeology, Prentice-Hall, Inc , New Jersey, 381 p <br />' Advanced GeoEnvironmental,Inc <br />