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Ta <br /> Groundwater AWtical Results • <br /> Former Chevron Service Station#9-8632 <br /> 575 Grant Line Road <br /> Tracy,California <br /> MTBE by EPA EPA <br /> WELL ID Methanol Ethanol TBA EPA 8260 DIPE ETRE TAME 8270 8010 Naphthalene Hexachloroethane Cadmium Chronuum Lead Nickel Zinc <br /> DATE (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (Ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (p b) <br /> I <br /> SUMP <br /> 01/07/97 -- - -- <0 5-<5 0 <br /> 11/19/97 -- <500 <100 <2 0 <2 0 <2 0 <20 -- -- <br /> 09/10/98 <br /> -08/10/98 <500 <100 <2 0 <2 0 <2 0 <2 0 _ <br /> 02/03/00 <500 <100 <2 0 <2 0 <2 0 <2 0 - <br /> EXPLANATIONS <br /> Groundwater laboratory analytical results prior to May 25,2001,were compiled from reports prepared by Blaine Tech Services,Inc <br /> TBA=Tertiary butyl ether <br /> MTBE=Methyl tertiary butyl ether <br /> DIPE=Di-isopropyl ether <br /> ETBE=Ethyl tertiary butyl ether <br /> TAME=Tertiary amyl methyl ether <br /> (ppb)=Parts per billion <br /> =Not Analyzed <br /> EPA 8260 indicates Isopropylbenzene,n-Propyl benzene, 1,2,4-Tnmethylbenzene and 1,3,5-Trimethylbenenzene with respective values <br /> of 42 100,520 and 93 ppb <br /> z Laboratory report indicates sample was analyzed outside the EPA recommended holding time <br /> I <br /> 9 8612 xis/#186855 8 As of 05/25/01 <br />