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Takw <br /> Groundwater Analytical R Oxygenate Componnds <br /> Chevron Service Station#9-9840 <br /> 4344 Waterloo Road <br /> Stockton,California <br /> WELL IDI METHANOL ETHANOL TRA MTRE DIPS ETRE TAME <br /> DATE (ppb) (ppb) (PO) (PPh) (ppb) (ppb) (ppb) <br /> i <br /> MW-3(cont) <br /> 09/20/99 <1 000 <1,000 <200 <2 0 <2 0 <20 <2 0 <br /> 1210';199 <1,000 <1,000 <200 <2 0 <2 0 <20 <2 0 <br /> 01/09/00 <1,000 <1,000 <100 III <2 0 <2 0 <2 0 <br /> 06/22/00 <1,000 <500 <100 <2 0 <2 0 <2 0 <2 0 <br /> 12/14/00 <1,0002 <500 <50 <2 0 <2 0 <2 0 <2 0 <br /> 02/23/01 <1,000 <500 <50 <2 0 <2 0 <2 0 <2 0 <br /> 05/17/61 <1,000 <500 <20 <2 0 <2 0 <20 <2 0 <br /> 07/23/01 <1,000 <500 <20 <20 <2 0 <2 0 <20 <br /> EXPLANATIONS <br /> Groundwater laboratory analytical results prior to June 22 2000 were,compiled from reports prepared by Blaine,Tech Services Inc <br /> TBA=Tertiary butyl alcohol <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 /> Laboratory report indicates this sample was originally analyzed within holding time Re-analysis for confirmation or dilution was performed past the <br /> recommended holding time <br /> 2 Laboratory report indicates this sample was analyzed outside of EPA recommended hold time <br /> ANALYTICAL METHODS <br /> EPA Method 8015 Modified for Methanol <br /> EPA Method 8260 for Oxygenate Compounds <br /> 1 <br /> 9 9840 x1s1#386846 5 As of 07/21/01 <br />