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,l <br /> ­Teichert and Sore -3- April 9, 2008 ' <br /> Claim No. 51 <br /> B. In-Situ;�Soil Remediation: none identified , <br /> k - - <br /> • 'METHOD: soil vapor extraction <br /> o <br /> DURATION:, Dec 94 through 1996 • . <br /> C.. Groundwater Remediation: <br /> • METHOD: air sparging <br /> • DURATION: Dec 94 through 1996 <br /> D. Groundwater Trends: <br /> • Benzene trends are shown below: : A <br /> . . Claim 51 , <br /> 4 40 - <br /> � . <br /> 30 <br /> i 25 Ik <br /> 20 - <br /> 10 <br /> 0 10 <br /> 5 - <br /> o 0 <br /> r) r) M v rt 47 to 0 (0 ti ti t- <br /> .0 .. . <br /> 0 0 0 0 0 0 0 00 <br /> 0 0 0 0 0 0 0 <br /> a a 0 00 0 0 o a 0 0 0 0 0 0 <br /> II N N N N N N N N N. N N ,N N ;-5 <br /> N - <br /> a0 a0 a0 00 00 _W. W OMD OMD W 00 00 00 - <br /> r Time <br /> VII. SENSITIVE RECEPTOR SURVEY: no wells identified within Y2-mile of the site <br /> Vlll. COMMENTS AND JUSTIFICATION..FOR RECOMMENDED ACTION ' <br /> A Site Description: construction company. f <br /> B. Site History: the extent of groundwater contamination Is defined'- <br /> �+ <br /> C.,.Groundwater Monitoring Summary: . strong monitoring history :r <br /> D. Remediation Summary: soil vapor extraction and air 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 fee'title notifications are conducted, and the monitoring wells are <br /> appropriately abandoned. <br /> i CaliYOrnia_'nviromwenlalProlec,&wtlg Ney <br /> �.,aXecyc%dPvper ' <br />