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.. <br /> Lori Duncan [EH] <br /> From: Lori Duncan [EH] <br /> Sent: Tuesday, March 30, 2004 3:25 PM <br /> To: 'charms@secor.com' <br /> Subject: 6100 N. Hwy 99, ARCO 595 <br /> Clint, received your phone message concerning the above referenced site. MW-1 and MW-3 both report contamination, <br /> so shallow definition has not been made upgradient or towards the east. All three deep wells have MtBE and 1,2-DCA so <br /> there is no vertical definition, or lateral definition at depth . MW-4 and MW-2 have not been providing data for a year and a <br /> half, and perhaps should be replaced (especially MW-4). The Regional Board looks for non-detect results for definition, <br /> though MCL's are an acceptable goal. <br /> I think you mentioned a reference to a figure 3, 1 do not see a comment or reference to a figure 3 in our 3/8/04 letter. <br /> Lori Duncan <br /> Senior REHS <br /> San Joaquin County Environmental Health Department <br /> Iduncan@sjcehd.com <br /> (209)468-0337 <br /> 1 <br />