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T�2 <br /> Groundwater Analytical R is-Oxygenate Compounds <br /> Chevron Service Station#9-1848 <br /> 1257 Yosemite Avenue <br /> Manteca,California <br /> WELL W )E I ANOL TBA MTBE RIPE TAME EIRE <br /> DATE (W) (Ppb) (Ppb) (Ppb) (PP b) (Ppb) <br /> C-1 <br /> 11/20/97 <500 <100 28 <2 0 <2 0 <2 0 <br /> 05/20/98 <500 <100 59 <2 0 <2 0 <2 0 <br /> C-2 <br /> 11/20/97 <2,500 1,100 650 <10 <10 <10 <br /> 05/20/98 <715 200 190 <2 9 <2 9 <2 9 <br /> 08/10/98 <500 <100 68 <2 0 <2 0 <2 0 <br /> 11/18/98 <500 <100 54 <2 0 <2 0 <2 0 <br /> 05/23/01 -- -- 141 -- <br /> 07/12/01 -- - 110 -- -- <br /> 10/11/01 -- 400 .. _. _- <br /> C-3 <br /> 11/20/97 <500 <100 <2 0 <2 0 <2 0 <2 0 <br /> 05/20/98 <500 <100 <2 0 <2 0 <2 0 <2 0 <br /> EXPLANATIONS <br /> Groundwater laboratory analytical results prior to May 23,2001,were compiled from reports prepared by Blaine Tech Services,Inc <br /> TBA=Ternary butyl alcohol ETBE=Ethyl tertiary butyl ether <br /> MTBE=Methyl tertiary butyl ether (Ppb)(pp )=Pans per billion <br /> DIPS=Di-isopropyl ether --W Not Analyzed <br /> TAME=Tertiary amyl methyl ether <br /> i Laboratory report indicates sample was analyzed outside the EPA recommended holding time <br /> 9-1848 xls/#386392 9 As of 10/11/01 <br />