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I A <br />{ <br /> T&T Trucking -3- May 6, 2010 <br /> Claim No. 10934 <br /> r <br /> B. In-Situ Soil/ Groundwater Remediation <br /> METHOD: soil vapor extraction and air sparging ` i ' <br /> DURATION: Apr 08 through present <br /> INITIAL INFLUENT TPH-G CONENTRATION.i 816.ppmv <br /> • CURRENT INFLUENT TPH-G CONENTRATION'. 101 ppmv <br /> MASS OF TPH-G REMOVED: 6,173 pounds (Mar 2010) <br /> C. Groundwater Trends: <br /> MTBE trends are shown below <br /> METHYL TERT BUTYL ETHER (MTBE) Results for MW1� (a, <br /> ♦ rJ <br /> 140000 43v <br /> 120000 .r xg <br /> 80000 <br /> 1 '. <br /> a��60000 i <br /> r <br /> s, 40000 h <br /> 20000 <br /> 3.''+asa. METHYL TERT BUTYLSETHER(MTBE) � t - nt - <br /> VII. SENSITIVE RECEPTOR SURVEY: seven wells identified within'/2 mile of the site <br /> VIII. COMMENTS AND JUSTIFICATION FOR RECOMMENDED'ACTION <br /> A. Site Description: former truck service station <br /> B. Site History: the extent of groundwater contamination is defined <br /> C. Groundwater Monitoring Summary: strong monitoring history <br /> D. Remediation Summary: soil vapor extraction and air sparging are underway <br /> j E. Contaminant Exposure Pathway Evaluation: unknown <br /> F. Recommendation: <br /> i <br /> In May 2008, the Fund made the following recommendation, that the San <br /> Joaquin County LOP should direct the Responsible Party to implement active <br /> I remediation to achieve Water Quality Objectives in a timely manner. The Fund <br /> concurs with this action and will review this site next year to track progress. <br /> i <br /> 3 <br /> Ca6lornia Environmental Protection Agency <br /> C4 Recycled Paper <br />