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Stephen's Marine -3- February 28, 2011 <br /> Claim No. 12858 <br /> C. Groundwater Trends: Benzene trends are shown below, source area <br /> BENZENE Results for MW8 <br /> 70 <br /> I. <br /> I <br /> 40- <br /> 30 <br /> 0 3D <br /> 20- <br /> 10 <br /> 0 i I <br /> a - I --- <br /> i;, <br /> VII. 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: no,active reme Jiation identified, monitored natural <br /> attenuation <br /> E. Contaminant Exposure Pathway Evalu tion: unknown <br /> F. Recommendation: <br /> In June 2008, the Fund concurs with the an Joaquin County LOP that the <br /> Responsible Party must define the verticE I extent of contamination, .further define <br /> the extent of groundwater contamination o the northwest, and to conduct batch <br /> extraction to reduce ,groundwater contam nation. The Fund will review this site <br /> next year to track progress. <br /> UPDATED, June 2009, the Fund recommends that the San Joaquin County LOP <br /> review this site for closure. <br /> UPDATED, March 2010, the Fund recommends that the San Joaquin County <br /> LOP review this site for closure. <br /> Kirk L rson, P.G. Date obert Trommer, C:H.G. Date <br /> Engineering Geologist Senior Engineering Geologist <br /> Technical Review_ Unit Chief, Technical Review Unit <br /> (916) 341-5663 916) 341-5684 <br /> CaAfornia Environmenta] roteetion Agency <br /> P.�Recycled A?7er <br />