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� • s <br /> Table 2 <br /> Groundwater Sample Analytical Results <br /> Former Unocal Service Station No 5098 <br /> 5606 Pacific Avenue <br /> Stockton, California <br /> Sample Sample Unit TPHg Acetone BENZENE n-BUTYL sec-BB Chloroform 1,2-DCA EB IPB MtBE NAPHT n-PB TOLUENEXYLENES METHANE <br /> (Total) <br /> ID Data (u91L) N91L) (491L) (u /L) (491L) (u91L) (ug/L) N91L) (u91L) (u91L) (ug/L) (ug/L) (u /L) (u /L) (u91L) <br /> Monitoring Well <br /> MW-31 12/09/04 C <50 <10 <0 50 <0 50 <0 50 098 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <1 0 16 <br /> MW-32 12/09/04 D <50 120 <0 50 <0 50 <0 50 10 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <10 14 <br /> EXPLANATION <br /> ug/L= Micrograms per Liter TPHg= Total Petroleum Hydrocarbons as Gasoline <br /> --= Not measured or not analyzed 1,2-DCA = 1,2-Dichloroethane <br /> < = Not detected at or above concentration limit listed 1,3,5-TMB = 1,3,5-Tnmethyl benzene <br /> EB = Ethylbenzene <br /> IPB = Isopropylbenzene <br /> MtBE = Methyl Tertiary Butyl Ether <br /> n-BUTYL = n-Butylbenzene <br /> n-PB = n-Propylbenzene <br /> NAPHT = Naphthalene <br /> sec-BB = sec-Butylbenzene <br /> 06940-293 1 of 7 ENSR Corporation <br />