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Cherokee Truck Stop -3- September 2, 2010 <br /> Claim No. 8109 k <br /> B. In-Situ Soil/ Groundwater Remediation: { <br /> • METHOD 1: soil vapor extraction pilot test, 8 hour <br /> • INITIAL EXTRACTION CONCENTRATION: 34,000 ppmv (TPH-G) <br /> • RATE OF HYDROCARBON REMOVAL: 40 pounds/8hours <br /> METHOD 2: ozone.bench scale pilot test .. .. <br /> C. Groundwater Trends:` 1`,2 DCA trends are shown below, .source area and down <br /> gradient, respectively. <br /> 1,2 DIChiLOF20ETHANE`Results for4MW1 r `3; a <br /> 35G- <br /> 300. <br /> 50 300 <br /> � <br /> i r <br /> -250 <br /> 200. <br /> 150 <br /> 1000. <br /> ; <br /> .. ( -- — <br /> �. 1 2�DIEHLORQETHANE <br /> 1;2 DIBROMOETHANE Results f6CzMW6 <br /> i. <br /> I <br /> i 1 <br /> O 4., <br /> M A <br /> ------- - - <br /> 0 s:c: :max< Sac cy <br /> F-- <br /> ccz. 1 2-DIBROMOETHANE <br /> VII. COMMENTS AND JUSTIFICATION FOR RECOMMENDED ACTION <br /> A. 'Site Description: truck refueling <br /> B. Site History: the extent of groundwater contamination is defined <br /> California EnYlronmental Protection Agency <br /> P.d RecydedPaper <br /> 1 <br />