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Moore Petroleum -4- �`') March 14, 2008 <br /> Claim No. 889 <br /> D. Groundwater Trends: <br /> • Benzene trends are shown below <br /> Claim 889 <br /> 140 <br /> 120 - <br /> 100 ♦_MW-7 <br /> 80 <br /> a 60 —�—MW-8 <br /> N40 >x.... MW-10 <br /> m <br /> m 20 Al <br /> 0 T11 <br /> off. <br /> Time <br /> VII. SENSITIVE RECEPTOR SURVEY: two wells identified within Y2 mile of the site <br /> VIII. COMMENTS AND JUSTIFICATION FOR RECOMMENDED ACTION <br /> A. Site Description: bulk fuel plant <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, air sparing, ozone sparging <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.f&e,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 /> 3a • Free-phase product in groundwater has been removed to the full extent <br /> h, 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 /> California Environmental Protection Agency <br /> • �a Recycle d Paper <br />