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GEOMATRIX <br /> TABLE 2 <br /> HISTORICAL SOIL ANALYTICAL RESULTS: <br /> TOTAL PETROLEUM HYDROCARBONS AND RELATED CONSTITUENTS - <br /> 1998 INVESTIGATION' <br /> Roberts Property <br /> Vernalis, California <br /> Concentrations reported in milligrams per kilogram(mg/kg) <br /> Sample <br /> Sample Depth Ethvl- <br /> IDZ (feet bgs) TPHd TPHmo TPHg Benzene benzene Toluene Xvlenes MtBE <br /> MW2-RO44 5 16 130 <0.100 <0.0005 <0.0005 <0.0005 <0.0005 <0.010 <br /> MW2-RO45 10 10 120 <0.100 <0.0005 <0.0005 <0.0005 <0.0005 <0.010 <br /> MW2-RO46 15 <10 <10 <0.100 <0.0005 <0.0005 <0.0005 <0.0005 <0.010 <br /> MW2-RO47 20 <10 <10 <0.100 <0.0005 <0.0005 <0.0005 <0.0005 <0.010 <br /> MW2-RO36 25 10 <10 0.340 <0.0005 <0.0005 0.0037 0.0087 <0.010 <br /> MW2-RO37 29 13 <10 <0.100 <0.0005 <0.0005 <0.0005 <0.0005 <0.010 <br /> MW2-R038 34 <10 <10 <0.100 <0.0005 <0.0005 <0.0005 <0.0005 <0.010 <br /> MW2-RO39 35 <10 <10 <0.100 <0.0005 <0.0005 <0.0005 <0.0005 <0.010 <br /> MW2-RO40 39 <10 <10 <0.100 <0.0005 <0.0005 <0.0005 <0.0005 <0.010 <br /> MW2-RO41 42 <10 <10 <0.100 <0.0005 <0.0005 <0.0005 <0.0005 <0.010 <br /> MW2-RO42 46 <10 <10 <0.100 <0.0005 <0.0005 <0.0005 <0.0005 <0.010 <br /> MW3-RO54 5 <10 <10 <0.100 <0.0005 <0.0005 <0.0005 <0.0005 <0.010 <br /> MW3-RO55 10 <10 <10 <0.100 <0.0005 <0.0005 <0.0005 <0.0005 <0.010 <br /> MW3-RO56 15 <10 <10 <0.100 <0.0005 <0.0005 <0.0005 <0.0005 <0.010 <br /> MW3-RO58 26.5 <10 <10 <0.100 <0.0005 <0.0005 <0.0005 <0.0005 <0.010 <br /> MW3-RO59 32.5 <10 <10 <0.100 <0.0005 <0.0005 <0.0005 <0.0005 <0.010 <br /> MW3-RO60 35 <10 <10 <0.100 <0.0005 <0.0005 <0.0005 <0.0005 <0.010 <br /> MW3-RO61 40 <10 <10 <0.100 <0.0005 <0.0005 <0.0005 <0.0005 <0.010 <br /> MW4-RO49 24 <10 <10 <0.100 <0.0005 <0.0005 <0.0005 <0.0005 <0.010 <br /> MW4-RO50 30 <10 <10 <0.100 <0.0005 <0.0005 <0.0005 <0.0005 <0.010 <br /> MW4-RO51 36.5 <10 <10 <0.100 <0.0005 <0.0005 <0.0005 <0.0005 <0.010 <br /> MW4-RO52 41 <10 <10 <0.100 <0.0005 <0.0005 1 <0.0005 1 <0.0005 <0.010 <br /> MW4-RO53 45.5 <10 <10 <0.100 <0.0005 <0.0005 1 <0.0005 1 <0.0005 <0.010 <br /> Notes: <br /> 1 Soil samples collected by Radian International and analyzed by Core Laboratories of Pasadena,California,and/or <br /> American Environmental Network of Pleasant Hill,Califomia,and analyzed for TPHd,TPHmo,and TPHg using EPA <br /> Method 8015M and for benzene,toluene,ethylbenzene,xylenes,and MtBE using EPA Method 8020. <br /> Z Designates boring location and sample number. <br /> 3 <=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 /> i:\doc_safe\5000s\5011.001\tbl 2.xls Page 2 of 2 <br />