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Dave Deaner <br /> Page 2 <br /> plan to proceed with excavation. At no time was reimbursement <br /> from the Cleanup Fund mentioned or I would have advised them to <br /> obtain pre-approval for the work. The extent of excavation work <br /> was their decision. It was performed as interim remedial action <br /> with PHS/EHD approval . <br /> On September 1, 1995 WHF Environmental Consultants, Inc. <br /> conducted sampling of the excavation sidewalls and bottom under <br /> the direction of Michael Infurna, PHS/EHD. <br /> This site has sandy soil which has been shown to be conducive to <br /> vapor extraction at other sites in San Joaquin County. Prior to <br /> the excavation activities, the previously installed monitoring <br /> wells were destroyed. New monitoring wells have been installed <br /> and groundwater contamination still exists, but at lower levels . <br /> Future site work will be based on new information as it is <br /> gathered. <br /> If a Corrective Action Plan is necessary, a feasibility study to <br /> evaluate at least two remedial alternatives and their cost- <br /> effectiveness will be required as specified in the California <br /> Code of Regulations, Title 23 , Division 3 , Chapter 16 . <br /> If you have any questions contact me at (209) 468-3449 . <br /> E <br /> Donna Heran, REHS, Director k <br /> Environmental Health Division <br /> Margaret Lagorio, Lead Senior REHS <br /> Site Mitigation Unit <br /> t <br /> i <br /> i <br /> t <br />