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Table 2-Groundwater Chemical Analytical Data <br /> Former Unocal Service Station No 0187 <br /> 437 East Miner Avenue <br /> Stockton,California <br /> Sample Sample TPHg Benzene Toluene Ethylbenzene Xylenes MtBE Ethanol DIPE ETBE TAME TBA <br /> No Date (Ppb) (ppb) (Ppb) (ppb) (ppb) (ppb) (ppb) (Ppb) (ppb) (ppb) (ppb) <br /> U-26 4-11-02 <50 <0 50 22 <0 50 24 14/20 <500 <2 0 <2 0 <2 0 <20 <br /> Explanation: Analytical Method <br /> TPHg=Total Petroleum Hydrocarbons as gasoline TPHg and BTEX by EPA Methods 8015M/8021 <br /> BTEX=Benzene,Toluene,Ethylbenzene,Xylenes Ethanol,RIPE,ETBE,TAME,and TBA by EPA Method 8260B <br /> MtBE=Methyl tert-butyl ether MtBE by EPA Method 8021/MtBE by EPA Method 8260B <br /> DIPE=Di-isopropyl ether <br /> ETBE=Ethyl tert-butyl ether Analybcal Laboratory <br /> TAME=Tert-amyl methyl ether Sequoia Analytical(FLAP#1271) <br /> TBA=Tert-butyl alcohol <br /> bgs=below ground surface <br /> ppb=parts per billion <br /> 240042 11-1 <br />