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OEOMATRIX <br /> TABLE 1 <br /> HISTORICAL SOIL ANALYTICAL RESULTS — <br /> TOTAL PETROLEUM HYDROCARBONS AND RELATED CONSTITUENTS <br /> Roberts Property <br /> Vernalis, California <br /> Concentrations reported in milligrams per kilogram(mglkg) <br /> Sample <br /> Sample Date Depth Ethyl- <br /> IIl' Sampledz (feet bgs) TPHg TPHd TPHmo TPHc Benzene Toluene benzene Xylenes MtBE <br /> SBS-8025 7115/98 15 <1 9400 9400 NA <0.005 <0.005 <0.005 <0,005 NA <br /> SBS-R027 71I5198 20 160 7800 6300 NA <0.3 <0.3 0.6 0.6 NA <br /> S138-8028 7115198 25 270 9800 8200 NA <03 <0.3 <0.3 0.9 NA <br /> Notes: <br /> ' Designates boring location and sample number. <br /> Soil samples collected in 1998 by Radian International and analyzed by Core Laboratories of Pasadena,California,and/or American <br /> Environmental Network of Pleasant Hill,California,and analyzed for TPHd,TPHmo,and TPHg using EPA Method 8015M and far benzene, <br /> toluene,ethylbenzene,xylenes,and MtBE using EPA Method 8020. <br /> a e=Analyte was not detected above detection limit indicated. <br /> Abbreviations: <br /> feet bgs = Feet below ground surface. <br /> TPHd = Total petroleum hydrocarbons quantified as diesel. <br /> TPHmo = Total petroleum hydrocarbons quantified as motor oil. <br /> TPHg = Total petroleum hydrocarbons quantified as gasoline. <br /> MtBE = Methyl tert-butyl ether. <br /> NA = Not analyzed. <br /> woc safe15000s15011.0011reportlsod gw UsAs Page 4 of 4 <br />