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Best California Gas <br /> -3 <br /> Claim Na. 1May 5, 2009.3729 ,� �� � - <br /> !I <br /> B. In-Situ Soil Remediation: <br /> • METHOD: soil vapor extraction 0. <br /> • DURATION. Jun 99 through present . i <br /> • MASS REMOVED: 165,168 pounds of TPH�'G (Oct 08) <br /> 1 • RATE OF REMOVAL: 3.9 pounds/hr (Oct 0$) <br /> t • MASS REMOVED IN OCT 08: 803 pounds of TPH-G <br /> C. Groundwater Remediation: none identified <br /> f D. Groundwater.Trends.- <br /> MTBE <br /> rends:MTBE trends are shown below � <br /> f i <br /> METHYL TERT BUTYL ETHER;(MT.BE.} Results:for EW-SS <br /> 4500 <br /> 31 _ - <br /> _ 350'0. <br /> 39 <br /> XD_ <br /> _2500` 41 '_ <br /> °° <br /> 2000° - <br /> i500 } -LAI <br /> � — O <br /> 5007745 <br /> . 47 <br /> 51 - <br /> M <br /> I i 49 <br /> p is <br /> METHYL-TERT BUTYL El-HER-(MTBE) * ■ Depth to Water <br /> sib <br /> I� <br /> VII. SENSITIVE RECEPTOR SURVEY: two wells identified within % mile of the site <br /> Vlll. COMMENTS AND JUSTIFICATION FOR RECOMMENDED ACTION <br /> A. Site Description: active retail gasoline station <br /> B. i <br /> S to History' the extent of groundwater contamination is defined <br /> li <br /> C. Groundwater Monitoring Summary: strong monitoring history . <br /> D. -Remediation Summary: soil vapor extraction <br /> 3� <br /> E. Contaminant Exposure Pathway Evaluation: unknown <br /> .i. <br /> California Environmental Protection Agency_ <br /> *RBCVCIed PBD2r <br />