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f <br /> -. t. <br /> USA Petroleum <br /> March 2, 2009 <br /> Claim No. 6090 <br /> t VI. SOIL AND GROUNDWATER REMEDIATION <br /> t A. Soil Excavation- unknown volumo <br /> I <br /> I B. In-Situ Soil Remediation: <br /> • METHOD: soil vapor extraction <br /> • DURATION: Aug 00 through ? I <br /> C. Groundwater Remediation: none identified <br /> D. Groundwater.Trends: i <br /> • MTBE trends are shown below: <br /> METHYL TERT BUTYU THEIR (MTBE) Results:for MVV 8 3 <br /> G ., <br /> 120 I _ <br /> � 1 � <br /> I <br /> 1 , 1 <br /> 60 { <br /> .40 <br /> s � i <br /> 4'rYae <br /> , <br /> ! <br /> 14 <br /> I <br /> MET HYL-TERT-BUTYL ETHER(MTBE) --:Trend <br /> VII. SENSITIVE RECEPTOR SURVEY: two wells identified within Y2 mile of the site <br /> VIIL COMMENTS AND JUSTIFICATION FOR RECOMMENDED ACTION i 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 1 <br /> F. Recommendation: w <br /> In March 2008, the Fund made the following recommendation: Based on',the <br /> following criteria, the Fund recommends this site be considered for closure <br /> providing the potential for soil vapor migration is assessed and determined safe <br /> for prescribed site activities, public participation and fee title notifications are <br /> conducted, and the monitoring wells are appropriately abandoned. <br /> California Environmenta/Protection Agency 1 <br /> I <br /> <rl�Recycled Paper <br />