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^-. ��..� .� ter■ w■ i �! � ! ! l• � ! �� I� <br /> Table 1 <br /> Groundwater Analytical Results <br /> Former Unocal Station No 5098 <br /> 5400 and 5606 Pacific Avenue <br /> Stockton, Califomia <br /> Sample ID Unit DTW TPHg BENZENE n-BUTYL sec-BB 1,2-DCA EB IPS MtBE NAPHT N-PB TOLUENE 1,2,4-TMB 1,3,5 TMB XYLENES METHANOL ETHANOL <br /> t) (u /L) (uIL) u2 u /L) (uIL u /L u /L) u /LJ v2) u /L u /L (u /L u /L -ug/L)u2 <br /> NOTES <br /> Unit =Hydrostratigraphic Unit in which the well is sereened <br /> only compounds which were detected are shown on this table <br /> 08/05/03 =p-Isopropyltoluene was detected in wells MW-2(22 9g L) -1 3gconta and <br /> M -25Dhlaroethene Welel ne(1 0 pg/L) was detected in MW 27 contained ned Tnchloroethenle 0 98 pg/L) <br /> Wells MW-18(0 52 pg/L) MW-21S(0 65 pgIL) (3 6 p91L)also <br /> NS =Not Sampled <br /> ug/L =Micrograms per Liter <br /> < =Not detected at or above concentration limit listed NA =Not Analyzed <br /> DTW =Depth to Water EB =Ethylbenzene N PB =n-Propylbenzene <br /> ro benzene NAPHT =Naphthalene ND =Not Detected <br /> 1,2,4-TMB = 1,2,4-TnIPB =Isomethylbenzene p p� NS =Not Sampled <br /> 1,2-DCA =1,2-Dichloroethane MtBE =Methyl Tertiary Butyl Ether sec-BB =sec-Butylbenzene <br /> 1,3 5-TMB = 1,35-Trimethylbenzene N-BUTYL =n-Butylbenzene TPHg =Total Petroleum Hydrocarbons as Gasoline <br /> ' Although sample contains compounds in the rentention time range associated with gasoline,the chromatogram was not consistent with the expected chromatographic pattern or <br /> fingerprint However,the reported concentration is based on gasoline <br /> 2 Samples collected on August 31,2004 following well development activities <br /> 9 of 9 ENSR Corporation <br /> 06940-293 <br />