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Food and Liquor -3- May 4,-2009 <br /> Claim No. 17179 <br /> C. Groundwater Trends: <br /> • Benzene and MTBE trends are shown below: <br /> k Results for N1W 4 <br /> Ue - <br /> ,900 — { 0 4 <br /> k Zl <br /> -000 2 z <br /> a <br /> .700 <br /> 1 <br /> :500 I 6 <br /> `8 <br /> A�400 <br /> 0 - R :.'^ <br /> n 12 <br /> e <br /> � ^ 1 <br /> d .. <br /> a <br /> METHYL TERT-BUTYL ETHER.(MTBE) « 'BENZENE `+*+ ++ Depth to Water <br /> . - .... .... >. s <br /> VII. SENSITIVE RECEPTOR SURVEY: four 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 west <br /> C. Groundwater Monitoring Summary: strong monitoring history <br /> D. Remediation Summary: none identified <br /> E. Contaminant Exposure Pathway Evaluation: unknown <br /> F. Recommendation: <br /> In May 2008, the'Fund made the following recommendation: The San Joaquin <br /> County LOP has directed the Responsible Party to define the extent of <br /> contamination west of the site.. The Fund concurs and will review this site next <br /> year to track progress. <br /> UPDATED, May 2009: Based on the following criteria, the Fund recommends . <br /> this site be considered for closure providing a health hazard risk assessment is <br /> conducted and determined safe for prescribed .site activities, public participation <br /> and fee title notifications are conducted, and the monitoring wells are <br /> appropriately abandoned. <br /> • The source of the UST release has been identified-and removed. <br /> . 4 <br /> I <br /> California Environmental Protection Agency <br /> ;Ra Recycled Paper <br />