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March 24, 2008 , <br /> - - USA Petroleum -3- ' <br /> Claim No. 6090 <br /> B. in-Situ Soil Remediation: <br /> .' METHOD: soil vapor extraction <br /> DURATION: Aug 00 through ? <br /> C. Groundwater Remediation: none identified <br /> D. Groundwater Trends: <br /> • MTBE trends are shown below: <br /> 1 <br /> Claim 6090 j <br /> 120 <br /> _ <br /> 100 - <br /> 'a 80 .. -r--MW-8 i <br /> 60 S-2 <br /> 40 I <br /> 20 <br /> 0 <br /> O`5 lz ` Off` Oh Qb <br /> QQ d FQ d QQ OG vQ d d <br /> Time_ <br /> VII. SENSITIVE RECEPTOR SURVEY: two wells identified within Y2 mile of the site <br /> Vlll. COMMENTS AND JUSTIFICATION FOR RECOMMENDED ACTION <br /> A. Site Description: former retail gasoline station, car wash <br /> B. Site History: the extent of groundwater contamination is defined <br /> C. Groundwater Monitoring Summary: strong monitoring history <br /> D. Remediation Summary: soil vapor extraction <br /> E. Contaminant Exposure Pathway Evaluation: unknown <br /> F. Recommendation: Based on the following criteria, the Fund recommends this <br /> site be considered for closure providing the potential for soil vapor migration is <br /> assessed and determined safe for prescribed site activities, public participation <br /> and fee title notifications are conducted, and the monitoring wells are <br /> appropriately abandoned. <br /> • The source of the UST release has been identified and removed. <br /> camornia Environmental Protection Agency <br /> .n <br /> *Recycled Paper <br />