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i <br /> GROUND ZERO ANALYSIS, INC. <br /> o The vapor concentrations observed during the test suggest that <br /> thermal oxidation would provide the most cost effective off <br /> ' gas treatment during the initiation of vapor extraction I <br /> Ground Zero will study the cost effectiveness of soil vapor <br /> ' extraction as a remedial technique for gasoline hydrocarbons in <br /> soil beneath the site The conclusions will be presented in the I <br /> Corrective Action Plan Due regard will be given to establishing <br /> site specific cleanup levels for gasoline impacted soil <br /> Please contact us if you have any questions regarding this report <br /> Sincerely, <br /> Grou d Zero Analysis, Inc <br /> Justin M Power <br /> Project Manager GREGORY P. <br /> STAH* <br /> Nao.. 50 5423 � <br /> Gregory P Stahl 0� CALIF <br /> CA Registered Geologist No 5023 <br /> I <br /> I <br /> I <br /> 9 <br />