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Weldon Church -3- September 2, 2010 <br /> Claim No. 8502 <br /> B. In-Situ Soil/ Groundwater Remediation: <br /> • METHOD: in-situ chemical oxidation has been proposed <br /> C. Groundwater Trends: <br /> • Benzene trends are shown below, source area and down gradient, <br /> respectively. <br /> BENZENE Results for MW1 <br /> T <br /> 300 <br /> 250-{ _..�------- ----------- -- -------------�---- --- --- <br /> I <br /> 3 200 - <br /> C7 i <br /> 1501. ---- ---,- - ----- - -- <br /> iv <br /> 1001 - - - ------- --- -------- ---. <br /> i <br /> 50]0 <br /> BENZENE] <br /> BENZENE Results for MW4 <br /> 1201 1 <br /> 100 --- !- -� - ± ----- --1 <br /> 80 <br /> 60 <br /> •, i <br /> (D <br /> i <br /> 2 0 <br /> 0 . <br /> - BENZENE <br /> VII. COMMENTS AND JUSTIFICATION FOR RECOMMENDED ACTION <br /> A. Site Description: house <br /> B. Site History: the extent of groundwater contamination is weakly defined to the <br /> north <br /> C. Groundwater Monitoring Summary- strong monitoring history <br /> D. Remediation Summary: none to date <br /> E. Contaminant Exposure Pathway Evaluation: unknown <br /> California Environmental Protection Agency <br /> (r.fl <br /> 4 Recycled Paper <br />