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Tab <br /> Groundwater Antical Results <br /> Chevron Service Station#9-8264 <br /> 3775 Tracy Boulevard <br /> Tracy,California <br /> Analytical values are in parts per billion(ppb) <br /> DATE 2,4- 2- 4- Nap Phenol Cd Cr Pb Ni Zn EPA Methanol Ethanol TBA MTBE RIPE ETBE TAME <br /> Dim MnPht MnPht 8260 (EPA 8260) <br /> MW-3 <br /> 08/27/97 -_ __ __ __ __ __ __ __ __ <2.0-<5.0 <1000 <500 <100 130 <2.0 <2.0 <2.0 <br /> 11/24/97 -- -- -- -- -- - - -- -- - -- <1200 <250 290 <5.0 <5.0 <5.0 <br /> 06/09/98 -- -- -- -- -- - -- -- - - <500 <100 120 <2.0 <2.0 2.7 <br /> 08/10/98 - -- -- -- -- -= - - - -- <500 <100 100 <2.0 <2.0 <2.0 <br /> 02/02/00 -- -- -- -- - -- -- -- - -- - <100000 <20000 14100 <200 <200 450 <br /> MW-4 <br /> 08/27/97 -- -- -- -- -- -- -- -- <2.0-<5.0 <1000 <500 <100 2.0 <2.0 5.0 <2.0 <br /> 11124197.. -- -- -- -- -- -- -- =- - - -- <500 <100 24 <2.0 2.8 <2.0 <br /> 06/09/98 -- - -- -- -- -- - -- -- - -- <2500 <500 590 <10 <10 47 <br /> 08/10/98 -- -- -- - -- -- <4150 <830 1100 <17 <17 150 <br /> 02/02100 __ __ __ _ _ __ __ - <100000 <20000 15100 <200 <200 422 <br /> EXPLANATIONS• <br /> Groundwater laboratory analytical results prior to May 18,2000,were compiled from reports prepared by Blaine Tech Services,Inc. <br /> 2,4-Dim=2,4-Dimethylphenol Cr=Chromium MTBE=Methyl tertiary butyl ether <br /> 2-MnPht=2-Methylphenol Pb=Lead DIPE=Di-isopropyl ether <br /> 4-MnPht=4-Methylphenol Ni=Nickel ETBE=Ethyl tertiary butyl ether <br /> Nap=Naphthalene Zn=Zinc TAME=Tertiary amyl methyl ether <br /> Cd=Cadmium -TBA=Tertiary butyl alcohol - =Not Analyzed <br /> Laboratory report indicates calcium was detected at 130,000 ppb. <br /> ANALYTICAL METHODS: <br /> Dissolved Metals by EPA 200 Series Methods. <br /> Volatile Organic Compounds by EPA Method 8010B. <br /> Semivolatile Organic Compound by EPA Method 8270B. <br /> 9-8264.xis1#386854 7 As of 05/18/00 <br />