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DIK Enterprises Inc. -5- 1"W March 24, 2009 <br /> Claim No. 12992 <br /> D. Groundwater Trends: <br /> Benzene trends are shown below: <br /> BENZENE Results for MW3 <br /> 100001 j <br /> 9000 <br /> soca <br /> soon � <br /> t - <br /> ' � �--y- <br /> - - . _ ' � it 4 -� <br /> 4000 — <br /> 3000 <br /> yr M EI s l V t , <br /> 2000--- <br /> 10001 000 1000-... ..... ._._.. <br /> i 0 BENZENE --- Trend <br /> VII. SENSITIVE RECEPTOR SURVEY: nine wells identified within ''Y2 mile of the site <br /> VIII. 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: none to date, soil vapor extraction and air sparging is <br /> pending <br /> E. Contaminant Exposure Pathway Evaluation: unknown <br /> F. Recommendation: <br /> In April 2008, the Fund made the following recommendation: The Fund concurs <br /> with the San Joaquin County LOP that soil vapor extraction and air sparging be <br /> implemented to achieve Water Quality Objectives in a timely manner. The Fund <br /> further recommends that the Responsible Party evaluate the necessity of each <br /> sampling point and to reduce the sampling frequency as appropriate to reserve <br /> available funds for remediation. The Fund will review this site next year to track <br /> progress. <br /> California EnvironmentaiProtection Agency <br /> p„d Recyc/ed Paper <br />