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Cal Truck Lines -4- January 10, 2011 <br /> Claim No. 8489 <br /> B. Site History: the extent of groundwater contamination is defined. It is likely the <br /> contamination detected in MW-4 is from gasoline USTs located south of the site. <br /> C. Groundwater Monitoring Summary: moderate monitoring history <br /> D. Remediation Summary: free product recovery only <br /> E. Contaminant Exposure Pathway Evaluation: soil vapor survey and human <br /> health risk assessment was conducted. <br /> F. Recommendation: <br /> In December 2008, the Fund recommends that the San Joaquin County LOP <br /> direct the Responsible Party to assess remedial technologies and implement <br /> active remediation to achieve Water Quality Objectives in a timely manner. The <br /> Fund will review this site next year to track progress. <br /> UPDATED, April 2010, this site has been under investigation for 19 years and no <br /> active remediation has yet been conducted. The Fund continues to recommend <br /> that the San Joaquin County LOP direct the Responsible Party to assess <br /> remedial technologies and implement active remediation to reduce contaminant <br /> mass and achieve Water Quality Objectives in a timely manner. The Fund will <br /> review this site next year to track progress. <br /> UPDATED, January 20" 1, the Fund recommends that free phase product <br /> recovery continue until removal is no longer cost effective. <br /> 7L�11 - E 110lZcf-a/ <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 Environmental Protection Agency <br /> .b <br /> Za Recyc%d Paper <br />