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Del Monte Foods -4- May 6, 2010 <br /> Claim 2612 <br /> D. Groundwater Trends: <br /> • 1,2 DCA trends are shown below <br /> 1,2-DICHLOROETHANE Results for NP1-80 <br /> 3500- <br /> 3000- <br /> 2 <br /> 500 3000-2 <br /> 2000- <br /> 1500- <br /> 1000- <br /> 500 <br /> 00015001000500 <br /> 1 - <br /> 4ce 4e <br /> ® 1,2-DICHLOROETHANE"'=--- Trend' <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: 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: soil vapor extraction, air/ oxygen sparging <br /> E. Contaminant Exposure Pathway Evaluation: unknown <br /> F. Recommendation: In March 2008, the Fund made the following <br /> recommendation, the San Joaquin County LOP consider this site for closure. <br /> UPDATED, March 2009,the Fund continues to recommend that the San Joaquin <br /> County LOP consider this site for closure. <br /> UPDATED, May 2010, by letter on 8 April 2010, the San Joaquin County LOP <br /> has directed the Responsible Party to abandon monitoring wells in preparation <br /> for closure. The Fund concurs with these actions. <br /> z2,ot <br /> Ki kr 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 /> California Environmental Protect(on Agency <br /> .o - - -- <br />