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• southwest No soil or groundwater contamination was detected south or east of the site, only minor <br /> groundwater contamination was detected to the north Hydraulic conductivity of the shallow <br /> groundwater-bearing zone proved to be very low indicating that a pump and treat method for <br /> groundwater remediation may not be feasible Data collected during the soil vapor extraction test <br /> indicated that flow and contaminant recovery rates were adequate for using soil vapor extraction as <br /> a method for vadose zone remediation <br /> Based on information collected during our field operations, SEACOR recommends that a secondary <br /> aquifer pump test and an interim air sparging feasibility study be conducted at the site and that a soil <br /> vapor extraction system design be completed prior to commencing site remediation work <br /> Sincerely, <br /> Science &Engineering Analysis Corporation <br /> 4� Jeffrey A Clayton, R G,REA �0 <br /> 4 �.X97 � <br /> Senior Geologist EqL Wa/,�S <br /> JAC jb <br /> cc Mr Harlin Knoll (SJCEHD) CAL1� <br /> Ms Beth Thayer (RWQCB) <br /> i <br /> I <br /> sEACOR 014-01-1 par lli <br />