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t� <br /> Mardee Kidd <br /> :Page 2 <br /> i_ <br /> Additionally, the TRC discussed the delineation of the contamination prior to soil <br /> remediation. No information was available to assess the extent of contamination to the <br /> north or south of the former location of underground storage tanks. Since the <br /> contamination had reached groundwater and groundwater levels have recessed, concern was <br /> expressed that contamination may have migrated with'the groundwater in a down gradient <br /> direction and may be adsorbed to the soil where groundwater previously existed. The TRC <br /> discussed the proximity of CSB-1 to the vapor extraction well and MW-1A and <br /> recommended additional confirmation sampling be done further away from these wells. <br /> Permission is granted to spread.the soil cuttings and purge water generated in January 1993 <br /> onto the unpaved portion of the property. <br /> PHS/EHD previously requested thata. work plan to perform additional confirmation soil <br /> boring be submitted by June 7, 1993. If you are unable to submit the work plan by the due <br /> date or if you wish to schedule a meeting to discuss this matter further, please contact Mary <br /> Meays, Senior REHS, of my staff at (209) 468-0337. <br /> Jogi Khanna, M.D., M.P.H. <br /> /allhl,O <br /> -- <br /> la, REHS, Program Manager <br /> Health Division <br /> LAC/MM:lb <br /> c: Elizabeth Thayer, CVRWQCB <br /> I` c: Bruce Scarbrough, SEACOR Environmental <br />�4 <br /> r <br /> E <br /> c <br /> t <br />