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Table 3 - Groundwater Chemical Analytical Data <br /> Former Unocal Service Station#2859 <br /> 1665 Pacific Avenue <br /> Stockton California <br /> Sample TOC DTW OWE TPHg Benzene Toluene Ethylbenzene Xylenes MtBE Ethanol TBA DIPE ETRE TAME 12-DCA EDB <br /> Sample ID Date (feet MSL) (feet btoc) (feet MSL) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) ( b) (ppb) (ppb) (ppb) (ppb)_ <br /> MW-20 4/11/02 971 25 14 -1543 <50 <0 5 073 058 37 9 0/<2 0 <500 <20 <2 0 <2 0 <2 0 <2 0 <2 0 <br /> MW-21 4/11/02 946 2394 -14 48 <50 <0 5 091 0 55 2 I "i5/<2 0 <500 <20 <2 0 <2 0 <2 0 <2 0 <2 0 <br /> TB-LB 4/11102 ---- ---- ---- <50 <0 050 <0 050 <0 050 <0 050 <2 51---- ---- <br /> Explanation Analytical Method <br /> TPHg=Total Petroleum Hydrocarbons as gasoline EDB=Ethylene dibromide TPHg by EPA Method 8015M <br /> BTEX=Benzene,Toluene Ethylbenzene,Xylenes TQC=Top of casing elevation BTEX by EPA Method 8021 <br /> MtBE=Methyl tert butyl ether DTW=Depth to water MtBE by EPA Method 8021/MtBE by EPA Method 82608 <br /> DIPE=Di-isopropyl ether OWE=Groundwater elevation Ethanol,TBA,RIPE ETRE TAME 12-DCA,and EDB by EPA Method 9260B <br /> ETBE=Ethyl tert-butyl ether MSL=Mean sea level <br /> TAME=Tert-amyl methyl ether btoc=below top of casing Analytical Laboratory <br /> TBA=Tert-Buthyl alcohol ppb=parts per billion Sequoia Analytical(FLAP#1271) <br /> I, 2-DCA= 1 2-Dichloroethane <br /> 240072 06 <br />