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Marlowe <br /> Page 2 1I <br /> j;r I <br /> The report also included conclusions and recommendations which indicated that additional <br /> investigation to determine the extent of groundwater contamination would be necessary. <br /> Prior to the installation of additional monitoring wells, the wells should be measured to <br /> confirm gradient and should be re-sampled to confirm the presence of petroleum <br /> hydrocarbon contaminants. Furthermore, the monitorin 'wells should be sampled quarterly <br /> rl <br /> until site closure, the next sampling event should be scheduled�by January 4, 1994. Please <br /> provide PHS/EHD 48 hours notice prior to the sampling event. The resultant quarterly <br /> report should be submitted by February 15, 1994. Q <br /> Il <br /> If you have any questions, comments or wish to schedule a site inspection, please contact <br /> Mary Meays, Senior REHS, of my staff at (209) 46$-0337. <br /> Jogi Khanna, M.D., M.P.H. 3; <br /> Health Officer <br /> ;K <br /> 3 <br /> Donna Heran, REHS, Program Manager <br /> Environmental Health Division <br /> DH/MM } <br /> c: Elizabeth Thayer, CVRWQCB �{ ' <br /> c: Michael Brady, McDonough, Holland and Allen <br /> c: Bob Marry, Geological Audit Services <br /> 14 <br /> 3 <br /> :1 <br /> 3i <br /> k <br /> 1� <br /> 1 <br /> 41l <br /> I s <br /> i <br /> I% <br /> 11 <br /> i <br /> f '3 <br />