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a <br /> r , <br /> S E C 0 R <br /> . Mr Harlin Knoll <br /> October 28, 2005 <br /> Page 4 <br /> years before the peak occurs in the downgradient well This is supported by similarity in <br /> trends between constituent concentrations in individual wells <br /> RECOMMENDATIONS <br /> It appears that only low concentrations of residual petroleum hydrocarbons remain in the <br /> areas of the former UST pit and downgradient of the former UST excavation In addition, <br /> benzene has not been detected in either of these wells since October 2002 MtBE has <br /> been consistently detected in both MW-3 and MW-4, but the concentrations of this <br /> constituent continues to approach its primary MCL of 13 Ng/L <br /> In light of the above information, Chevron and SECOR would like to arrange a meeting with <br /> representatives of the San Joaquin County Environmental Health Department (EHD) in <br /> early 2006 to discuss future activities at the site Specifically, Chevron and SECOR would <br /> like to consider the possibility of submitting a no further action request for the site <br /> If you have any questions or concerns regarding this report, please feel free to contact <br /> . George Forsythe at (559) 271-2650, ext 235 <br /> Sincerely, <br /> SECOR International Incorporated <br /> O'FOZ <br /> George Forsythe P G � FogsO�u' <br /> Senior Geologist '2No 13 fi "i <br /> cA��F°� <br /> N 1FileslProjectslChevron\Retadl#9-82641Periodic Morntonng1200513Q2005 QMR doc <br />