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USA Petroleum <br /> PAGE 2 <br /> The information from 1987 on the domestic wells located near this <br /> site may be outdated. A well survey shall be conducted to <br /> identify the domestic wells in the area that may influence the <br /> groundwater flow direction and contaminant distribution at this <br /> site. <br /> The data collected from the vapor tests show vapor extraction to <br /> be a viable option for this site. Interim soil vapor extraction <br /> can be initiated during the assessment phase to expedite <br /> remediation at this site. <br /> Please submit an interim soil vapor extraction remediation plan <br /> to this office by February 25, 1993. <br /> The soil and groundwater contaminant data collected to date for <br /> this site do not support the contention that the contamination is <br /> from an off-site source. Physical data which is highly <br /> indicative of the presence of additional contaminant plumes would <br /> need to be submitted for PHS/EHD to comment on this issue. <br /> If you have any questions please contact Linda Turkatte, REHS, of <br /> my staff at (209) 468-0339 . <br /> Jogi Khanna, M.D. , M.P.H. <br /> Health Of ' c r <br /> r <br /> Laurie A. Cotulla, REHS, Program Manager <br /> vironmental Health Division <br /> LAC/LT: lb <br /> c: Beth Thayer-CVRWQCB <br /> c: Srikanth Da Sappa - USA Petroleum <br /> c: Peter Frank-Park Environmental <br /> 2140 Professional Dr. , Ste. 130 <br /> Roseville, CA 95661 <br />