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Super Center Mart -3- May 18, 2009 <br /> Claim No. 12741 <br /> V. FREE PRODUCT: none identified <br /> VI. SOIL AND GROUNDWATER REMEDIATION <br /> A. Soil Excavation: unknown volume <br /> B. In-Situ Soil/ Groundwater Remediation.- <br /> METHOD- <br /> emediation:METHOD: dual phase extraction has been approved by the San Joaquin <br /> County LOP <br /> D. Groundwater Trends: <br /> • Benzene trends are shown below: <br /> BENZENE Results for MW3 <br /> 120000 26 <br /> __ .-- - 28 <br /> 100000 -- <br /> 30 <br /> �3 80000 _ _. <br /> � 32 <br /> 60000-- -- — — - ------- 34 c <br /> 36 <br /> 40000 —_ __- _ a <br /> 38 <br /> 20000 — - — 40 <br /> 0-I 42 <br /> r�°,-- BENZENE �� Depth to Water <br /> F -- i <br /> VII. SENSITIVE RECEPTOR SURVEY: one well identified within Y2 mile of the site <br /> VIII. COMMENTS AND JUSTIFICATION FOR RECOMMENDED ACTION <br /> A. Site Description: active retail gasoline station <br /> B. Site History: the extent of groundwater contamination is undefined to the <br /> southeast <br /> C. Groundwater Monitoring Summary: strong monitoring history <br /> D. Remediation Summary: dual phase extraction expected to begin by June 2009. <br /> E. Contaminant Exposure Pathway Evaluation: assessment is underway <br /> California Environmental Protection Agency <br /> Cj Recycled Paper <br />