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Canepa's Car Wash -3- February 29, 2008 <br /> Claim No. 1695 <br /> C. Groundwater Trends: <br /> • Benzene trends are shown below <br /> Claim 1695 <br /> 12000 <br /> -- 10000 <br /> 8000 <br /> 6000 �-M W 2 <br /> N 4000 -f-M W-5 <br /> c <br /> m <br /> m 2000 -- <br /> 0 <br /> 0 0 0 0 0 0 0 (0 0 0 <br /> c 3 c 5 c 5 c 5 c Z) <br /> co M a o <br /> Time <br /> VII. SENSITIVE RECEPTOR SURVEY: two wells identified within '/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 defined <br /> C. Groundwater Monitoring Summary: strong monitoring history <br /> D. Remediation Summary: none identified <br /> E. Contaminant Exposure Pathway Evaluation: unknown <br /> F. Recommendation: This case has been open since 1990 and no remediation <br /> has been performed. The Fund recommends the Responsible Party assess <br /> remedial technologies and implement active remediation without delay. In <br /> addition, it should be noted that existing well screen are positioned 20 feet below <br /> the water table and the Responsible Party should consider installing additional <br /> appropriately screened wells to determine if adequate site assessment has been <br /> conducted. The Fund will review this site next year to track progress. <br /> Kir 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 Environmenta/Protection Agency <br /> 0.ti <br /> Recycled Paper <br />