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Jerry and Marleta Castro • <br /> Claim No. 12325 _q September 2, 2010 <br /> C. Groundwater Trends: benzene trends are shown below, source area and down <br /> gradient, respectively. <br /> BENZENE Results for MW2 <br /> 7000 <br /> soon <br /> I <br /> 5000 <br /> I— <br /> 4000 .._-.__.... __..._.. - <br /> R 3000 --- <br /> �_-- -- <br /> 2000 <br /> 10le I <br /> 00 <br /> 4e 0'0 <br /> —1:— BENZENE <br /> BENZENE Results for MW6 <br /> 3500 <br /> i <br /> 3000 _. <br /> 2500 <br /> 2000L <br /> - --I <br /> 1500 <br /> — J <br /> 1000-�— <br /> I <br /> � 1 - <br /> 500�----- -�—. <br /> `•^`++ BENZENE <br /> VII. COMMENTS AND JUSTIFICATION FOR RECOMMENDED ACTION <br /> A. Site Description: car wash, active retail gasoline station <br /> B. Site History: the extent of groundwater contamination is largely defined <br /> C. Groundwater Monitoring Summary: strong monitoring history <br /> D. Remediation Summary: batch extraction, soil vapor extraction and groundwater <br /> extraction approved. <br /> E. Contaminant Exposure Pathway Evaluation: unknown <br /> F. Recommendation: The San Joaquin County LOP has directed the Responsible <br /> Party to conduct active remediation to achieve Water Quality Objectives in a <br /> Caiiibrnia EnvironmentaiProtectron Agency <br /> A <br /> �.a RecydedPap,, <br />