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Vel'e hiemann Service Statio -3 April 11, 2008 <br /> Claim No. 1978 <br /> C. Groundwater Trends: <br /> Xylenes trends are shown below <br /> Claim 1978 <br /> 5000 <br /> c 4000 <br /> -' 3000 -MW-3 <br /> y <br /> 2000 -i-MW-2 <br /> K 1000 <br /> . <br /> 0 <br /> 65 - P Off` Off` O� O� OOHO O� 01 <br /> Time <br /> VII. SENSITIVE RECEPTOR SURVEY: nine wells identified within 'h mile of the site <br /> VIII. COMMENTS AND JUSTIFICATION FOR RECOMMENDED ACTION <br /> A. Site Description: former retail gasoline station, service 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: 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 /> Free-phase product in groundwater has been removed to the full extent <br /> practicable, in accordance with.the UST Regulations (Title 23, CCR, <br /> Section 2655). <br /> Contaminants remaining in the vadose zone cannot migrate in soil vapor <br /> or leach at concentrations that would cause groundwater to exceed water <br /> quality objectives. <br /> CaJifarnia�'rwiro�zme�rtaJProtection Age�rcy <br /> - - �d RecydedPaper <br />