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09 October 2001 <br /> AGE-NC Project No 95-0144 <br /> Page 5 of 5 <br /> 4.0. RECOMMENDATIONS <br /> Based on the 24 May 2001 ground water aquifer pumping test results,AGE recommends extracting <br /> ' petroleum-impacted ground water EW�-1 at approximately 6 gpm,based on the site's estimated <br /> radius of influence of at least eet and site specific aquifer characteristics inferred from the <br /> pumping test, AGE believes that ound water extraction from well EW 1 at 6 gpm will effectively <br /> ' address the contaminated ground water plume in the shallower interval hydrologic unit and should <br /> inhibit further migration of petroleum-impacted ground water off-site <br /> ' Extracted groundwater from EW-1 could be pumped directly through an on-site groundwater pump- <br /> and-treat system. The ground water pump-and-treat system would utilize granular activated carbon <br /> (GAC)to address TPH-g, TPH-d and BTEX in extracted ground water Following treatment,water <br /> could then be discharged into the City of Stockton sewer system under a City of Stockton Public <br /> Works permit <br /> 5.0. 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 /> of available data points(Solinst water level meter,ground water samples),and subsurface conditions <br /> ' may 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 Geoftvironmental,Inc <br /> 1 _ <br />