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Canepa's Car Wash -3- March 16, 2010 <br /> Claim No. 1695 <br /> VI. SOIL AND GROUNDWATER REMEDIATION <br /> A. Soil Excavation: unknown volume <br /> B. In-Situ Soil/ Groundwater Remediation: <br /> • METHOD: dual phase extraction <br /> • DURATION: pending <br /> C. Groundwater Trends: <br /> • Benzene trends are shown below <br /> BENZENE Results for MW-5 <br /> 16000- <br /> 14000 <br /> s000 14000 <br /> 12000 <br /> 10000 <br /> 8000 <br /> 6000 <br /> 4000 <br /> 2000 - <br /> � I , <br /> W� BENZENE — - Trend <br /> VII. SENSITIVE RECEPTOR SURVEY: two wells identified within 1/2 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 undefined east of site, <br /> 10 wells proposed to define extent. <br /> C. Groundwater Monitoring Summary: strong monitoring history <br /> D. Remediation Summary: none identified, high vacuum soil vapor extraction <br /> remediation plan is being prepared. <br /> E. Contaminant Exposure Pathway Evaluation: unknown <br /> F. Recommendation: <br /> In February 2008, the Fund made the following recommendation: This case has <br /> been open since 1990 and no remediation has been performed. The Fund <br /> recommends the Responsible Party assess remedial technologies and <br /> implement active remediation without delay. In addition, it should be noted that <br /> existing well screens are positioned 20 feet below the water table and the <br /> California Environmental Protection Agency <br /> �.*Recycled Paper <br />