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Raymond Greer -3- May 7, 2009 <br /> Claim No. 8525 <br /> B. In-Situ Soil Remediation: none identified <br /> • METHOD: soil vapor extraction, rebound testing <br /> • DURATION: Sep 05 through Dec 08 <br /> • MASS REMOVED: 16,508 pounds of TPH-G (Q308) <br /> C. Groundwater Remediation: <br /> D. Groundwater Trends: <br /> • Benzene and 1,2 DCA trends are shown below <br /> Results for MW6 <br /> 700 - --- - ---_ - -66 <br /> 600 — - .__.- . . :.__. 68 <br /> 70 <br /> 500 -- - -- -- ,; T <br /> D 400 74 c <br /> ---76 o <br /> m I I <br /> 200-4 -_...-- — . . — — - ----�78 <br /> 100 ! 80 <br /> 82 <br /> W+^eLL 1,2-DICHLOROETHANE BENZENE Depthto Water <br /> VII. SENSITIVE RECEPTOR SURVEY: one well identified within '/2 mile of the site <br /> VIII. COMMENTS AND JUSTIFICATION FOR RECOMMENDED ACTION <br /> A. Site Description: agriculture <br /> B. Site History: the extent of groundwater contamination is poorly defined vertically <br /> C. Groundwater Monitoring Summary: strong monitoring history <br /> D. Remediation Summary: soil vapor extraction, in rebound testing <br /> E. Contaminant Exposure Pathway Evaluation: unknown <br /> California Environmental Protection Agency <br /> Zd Kecyc/ed Paper <br />