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09/07/2004 14:41 2094671118 AGE STOCKTON PAGE 10/10 <br /> 07 June 2001 <br /> AGE-NC Project No. 950103 <br /> Page 6 of 6 <br /> 5.0. RECOMMENDATIONS <br /> Based on the ground water aquifer pumping test results,AGE recommends remediation by extracting <br /> petroleum-impacted ground water from a network of wells, at approximately 5 GPM total flow. <br /> Based on the site's estimated radius of influence of at least 35 feet and site specific aquifer <br /> characteristics inferred from the pumping test,AGE believes that ground water extraction.from four <br /> on site wells and three proposed installed ground water extraction wells will effectively stabilize the <br /> ground water plume and inhibit further migration of petroleum-impacted ground water off-site; <br /> further reducing the overall mass of dissolved hydrocarbons at the site. <br /> Extracted ground water should be treated through an on-site ground water pump-and-treat system. <br /> The ground water pump and treat system would utilize granular activated carbon(GAC)to address <br /> TPH-g,and BTEX in extracted ground water. Following treatment,water could then.be discharged <br /> into the City of Stockton under a Municipal Utility District permit. <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 mainly <br /> upon analytical results provided by an independent laboratory. Evaluation of the geologic/hydro- <br /> geologic conditions at the site for the purpose of this investigation are made from a limited number <br /> ofavailable data points(Solinst Lcvelogger data.;ground water data),and subsurface conditions may <br /> vary away from these data points. No other warranty, expressed or implied, is made as to the <br /> professional recommendations contained in this report. <br /> Advanced GeoEnvironmenfsll.Inc. <br />