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BP Products + -4- March 24, 2009 <br /> Claim No. 2413 <br /> D. Groundwater Trends: " <br /> • MTBE and TBA trends are shown below <br />' a` -=�° '`• �' �r r Results fior4M1/1/ 7 7 <br /> 250000 ;'k`;v K ' <br /> s; a �7' 7' <br /> t•. <br /> r 200000 <br /> .150000: 13 y. ..: <br /> c <br /> 100000 7 Q <br /> .7 50000 1 9 <br /> ,ti+# :-Y Q �':.e3F 1n,Fi.•... -r'lA�' .WR. .� <br /> 2. <br /> ..f X:2.'.:..sem•-•i7,k.'K< - '' <br /> .C py..�" �:" .4 qA F <br /> .. j. J. x - <br /> J. <br /> S+• 71. <br /> ,---!--r?ERT-BUTYL-ALOOHOL;(TBA) ,-METHYL-T.ER.T-BUTYL'..ETHER�(MTBE)+*-Wm,"Deptt to:Water_- <br /> VII. SENSITIVE RECEPTOR SURVEY: no wells identified within '/2 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 defined horizontally, <br /> some vertical component may be poorly defined. <br /> C. Groundwater Monitoring Summary: strong monitoring history <br /> D. Remediation Summary: ozone sparging and batch extraction <br /> E. Contaminant Exposure Pathway Evaluation: unknown <br /> F. Recommendation: <br /> In April 2008, the Fund made the following recommendation: The Fund <br /> recommends that the San Joaquin County LOP direct the Responsible Party to <br /> continue to operate the existing remediation systems, maximized as necessary to <br /> achieve Water Quality Objectives in a timely manner. The Fund will review this <br /> site next year to track progress. <br /> California Environmental Protection Agency <br /> 0 Recycled Paper <br />