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Three Palms Grocery -3- May 10, 2010 <br /> Claim No. 13455 <br /> D. Groundwater Trends: <br /> • 1,2 DCA trends are shown below: <br /> 1,2-DICHLOROETHANE Results for MW1 <br /> 45 - <br /> I <br /> 40 - --- -- <br /> i <br /> 35 — ---- i -- <br /> 3 30 - ----- -- -- -- -- ---� ---- - ----- <br /> 25 -- --- ---- <br /> 10- <br /> 5- <br /> 0 <br /> 0 - - --- -- - ----- ------ --- <br /> _ t <br /> olie + as 14e ^rte <br /> vwww 1,2-DICHLOROETHANE <br /> VII. SENSITIVE RECEPTOR SURVEY: five wells identified within 1/2 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: San Joaquin County LOP has directed the <br /> Responsible Party to submit a Corrective Action Plan by 27 May 2008. The <br /> Responsible Party conducted a vapor extraction pilot test in Sep 07 yielding <br /> approximately 174 pounds/day of TPH-G. <br /> E. Contaminant Exposure Pathway Evaluation: unknown <br /> F. Recommendation: <br /> In May 2008, the Fund made the following recommendation, that the San <br /> Joaquin County LOP direct the Responsible Party submit a Corrective Action <br /> Plan. The Fund will review this site next year to track progress. <br /> UPDATED, May 2009, by letter on 4 December 2008, the San Joaquin County <br /> approved soil vapor extraction. The Fund concurs and will review this site next <br /> year to track progress. <br /> California Environmental Protection Agency <br />