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• <br /> �?2�EE <br /> GEOMATRIX <br /> TABLE 1 <br /> HISTORICAL SOIL ANALYTICAL RESULTSt <br /> Ridgeway (formerly Burns) Property <br /> 1881 Rustan Road <br /> Tracy, California <br /> Concentrations in milligrams per kilogram(mg/kg) <br /> Sample Depth Sample Ethyl- <br /> Sample ID (feet bgs) Date TPHg TPHd TPHc Benzene Toluene benzene Xylenes MTBE PAHs' <br /> GMX-11 12.0 9/23/99 <1 <10 <50 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <br /> GMX-12 9.5 9/23/99 32 4700 9900 1 <0.005 <0.005 <0.005 <0.005 <0.005 NA <br /> GMX-20 11.5 9/24/99 <1 <10 <50 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <br /> GMX-21 11.0 9/24/99 <1 <10 <50 <0.005 <0.005 1 <0.005 1 <0.005 1 <0.005 1 <0.005 <br /> GMX-22 10.5 9/24/99 <1 <10 <50 <0.005 <0.005 <0.005 <0.005 L0.005 <0.005 <br /> Notes: <br /> 1 <br /> Samples were collected by Geomatrix Consultants,Inc.(except where noted)and analyzed by Friedman and Bruya,Inc. for total petroleum hydrocarbons <br /> (TPH)quantified as gasoline(C6-C12;TPHg),TPH quantified diesel(C10-C24;TPHd),and TPH quantified as crude oil (C10-C36;TPHc)by EPA Method <br /> 8015M;for benzene,toluene,ethylbenzene,and total xylenes(BTEX)and methyl tertiary butyl ether(MTBE)using EPA Method 826013;and for polynuclear <br /> aromatic hydro-carbons(PAHs)using EPA Method 8270SIM. <br /> 2 Only detected PAHs are shown: Nph=Naphthalene,Acn=Acenaphthene,Fir=Fluorene,Phn=Phenanthrene, <br /> Flt=Fluoranthene,Pyr=Pyrene,Chr=Chrysene,and B(a)A=Benzo(a)anthracene. <br /> 3 <br /> Samples were collected by Earth Systems Consultants and analyzed by Chromalab,Inc., for Total Extractable Petroleum Hydrocarbons(TEPH)quantified as <br /> diesel,motor oil,and crude oil using EPA Method 8015M,and BTEX using EPA Method 8020;and by Friedman and Bruya,Inc., for PAHs using EPA Method <br /> 8270SIM. No TEPH quantified as motor oil was detected. <br /> 4 NA=Not analyzed. <br /> is\doc_safe\6000s\6115.007\dec2000report\table 1-2-3.xls Page 2 of 2 <br />