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Mohammed Mater -3- May 912008 <br /> Claim No . 14840 <br /> D . Groundwater Trends : <br /> • MTBE trends are shown below: <br /> Claim 14840 <br /> 25000 <br /> 20000 <br /> 3 15000 -1 <br /> W —F MW-2 <br /> H 10000 <br /> MW-3 <br /> 5000 <br /> 0 fK <br /> Off` Off` Off` 00 00 Oy OHO 00 00 01 01 O� <br /> Tim e <br /> VII . SENSITIVE RECEPTOR SURVEY: no wells identified within % mile of the site <br /> VIII . COMMENTS AND JUSTIFICATION FOR RECOMMENDED ACTION <br /> A. Site Description : former retail gasoline station <br /> B. Site History: the extent of groundwater contamination is defined <br /> C. Groundwater Monitoring Summary: strong monitoring history <br /> D . Remediation Summary: hone conducted <br /> E . Contaminant Exposure Pathway Evaluation : unknown <br /> F: Recommendation : The Fund recommends that the San Joaquin Valley LOP <br /> direct the Responsible Party to implement soil vapor extraction and assess the <br /> efficacy of air sparging to achieve Water Quality Objectives more rapidly. The <br /> Fund will review this site next year to track progress . <br /> Kirk Larson , P . G . Date Robert Trommer, C . H . G . Date <br /> Technical Review Unit Chief, Technical Review Unit <br /> (916 ) 341 -5663 (916) 341 -5684 <br /> CalifornraEnvironmentalProteclion Agency <br />