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a"OGLt-N-Go Mart -3- May 5, 2010 <br /> � Claim No. 13850 <br /> F <br /> C. Groundwater Trends: <br /> • MTBE trends are'`shown below: <br /> METHYL-TERT-BUTYL'ETHER (MTBE) Results for MVV-2 <br /> 1400 <br /> 7200 !' I <br /> 1000 <br /> B00 <br /> 600- <br /> CD _. ... <br /> -- <br /> � <br /> 400-- <br /> 200-- <br /> 0 <br /> 00 -20D 0 <br /> METHYL—TERTVBUTYL ETHER{(MTBE) <br /> VII. SENSITIVE RECEPTOR SURVEY: two wells identified within 1/2 mile of the site <br /> VIII. COMMENTS AND JUSTIFICATION FOR RECOMMENDED ACTION <br /> I's <br /> A. Site Description: active 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: ozone sparging, discontinued. <br /> E. Contaminant Exposure Pathway Evaluation: unknown, station is active <br /> F. Recommendation: <br /> In May 2008, the Fund made the following recommendation: The Fund concurs <br /> with the San Joaquin County LOP that ozone sparging continue and to maximize <br /> the treatment system'as necessary to achieve Water Quality Objectives in a <br /> timely manner. The Fund will.review the site next year to track progress. <br /> UPDATED, May 2009: the Fund recommends that the San Joaquin County LOP' <br /> consider reviewing-thissite for closure. t <br /> f <br /> UPDATED, May 2010; The Fund continues to recommend that the San Joaquin <br /> County LOP consider;:this site for closure. .Further investigation at this site is <br /> unlikely to benefit the people of California. <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 /> California En viranmental Protection Agency <br /> �.a Recycled Paper <br /> I� <br />