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1014 February 2006 <br /> !{ AGE-NC Project No 95-0141 <br />' Page 5 of 5 <br />' S.O. RECOMMENDATIONS <br /> Based on the results of this and previous investigations, AGE recommends <br />' 0 Continued quarterly monitoring of the ground water monitoring network <br /> • Performance of a ground water aquifer extraction study as approved in the Work Plan <br /> Addendum, 09 April 2002 approved by the SJC EHD by letter dated 07 May 2002 <br /> • Preparation of a work plan for interim remediation of petroleum hydrocarbon-impacted <br /> ground water at the site and vertical definition of the dissolved hydrocarbons and additives <br /> in the source area as previously proposed The western area,under the main office building, <br /> appears to cover the highest dissolved mass at the site, therefore limited access technology <br /> may be required to assess hydrocarbon-impact in this area <br /> • Preparation of a work plan for additional soil borings and/or monitoring wells to define the <br />' contaminant plume to the east of the on-site building, ensuring that it has not commingled <br /> with contamination from the adjacent Lopez property <br /> 10) <br /> G.O. 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 have been made from a limited number of available data points(i a monitoring <br /> wells and ground water samples)and subsurface conditions may vary away from these data points <br />' No other warranty,expressed or implied, is made as to the professional interpretations,opinions and <br /> recommendations contained in this report <br /> 1 <br /> 1 <br /> 1 <br />' Advanced GcoEnvnronmental,Inc <br /> 1 <br />