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Table 1 <br /> I/ Historical Analytical Results Summary for Soilst <br /> Chevron-Historical Pipeline Portfolio <br /> Pombo Property-1755 West 11th Street. <br /> Tracy,California <br /> Concentrations in milligrams per kilogram(mg/kg) <br /> Depth <br /> Boring or Test Interval Ethyl- <br /> Pit ID Date (feet bgs) TPHg TPHd TPHc Benzene Toluene benzene Xylenes PAHsc <br /> EB7-9-9.53 7/29/1999 9-9.5 NA <50 3,400 <0.62 1.6 <0.62 0.7 A- 0,54 <br /> B(a)A 0.13 <br /> Chr 0.54 <br /> Flt 0.071 <br /> Flr 39 <br /> Phn 5.1 <br /> _ Pyr 0.27 <br /> EB9-14.5-153 7/29/1999 .14.5-15 NA <50 4,300 <3.1 7.5 <3.1 3A Acn 0.16 <br /> B(a)A 0.035 <br /> Chr 0.14 <br /> Flt 0.029 <br /> Fir 0.49 <br /> Phn 0.72 <br /> Pyr 0.093 <br /> GMX-1-11.0 9/29/1999 11.0 <1 23 <50 <0.005 1<0.005 <0.005 <0.005 <0.005 <br /> GMX-2-8.5 9/22/1999 8.5 870 6,800 18,000 <0.005 <0.005 0.035 0.07 -Aarn 0.76 <br /> (near EB9) Chr 0.43 <br /> Flt 0.098 <br /> Phn 3.7 <br /> Pyr 0.23 <br /> GMX-3-11.0 9/27/1999 11.0_ <1 36 70 <0.005 <0.005 <0.005 <0.005 <0.005 <br /> GMXA-11.0 9/22/1999 11.0 <1 22 <50 <0,005 <0.005 <0.005 <0.005 <0.005 <br /> GMX-6-11.5 9/22/1999 11.5 180 4,100 12,000 <0.005 <0.005 <0.005 <0.005 NA <br /> GMX-7-11.0 9/23/2003 11.0 150 4,700 10,000 <0.005 <0.005 <0.005 <0.005 NA <br /> (near EB7) <br /> GMX-8-12.0 9/23/2003 12.0 <I. <10 _ <50 <0.005 <0.005 <0.005 <0.005 <0.005 <br /> GMX-13-12.5 9/24/1999 12.5 1,000 400 a&0 <0.05 <0.05 13 0.55 Acn 0.034 <br /> Fir 0.095 <br /> Nph3 <br /> Ph. 3 <br /> Phn 0.053 <br /> GMX-15-12.5 9/27/1999 12.5 <1 <10 <50 <0.005 <0.005 <0.005 <0.005 <0.005 _ <br /> GMX-17-11.5 9/22/1999 11.5 <1 <10 <50 <0.005 <0.005 <0.005 <0.005 <0.005 <br /> GMX-19-13 9h4/l999 12.5 <I <10 <50 <0.005 <0.005 <0.005 <0.005 <0.005 <br /> GMX-25 5/16/2000 13.0 NA NA <50 <0.005 <0.005 <0.005 <0.005 <0.005 <br /> GMX-26 5/16/2000 8.0 NA NA 120 <0.005 <0.005 <0.005 <0.005 <0.005 <br /> GMX-27 5/16/2000 8.0 NA NA <50 <0.005 <0.005 <0.005 <0.005 _ <0.005 <br /> GMX-30 10/12/2000 8.0 NA NA <50 <0.005 <0.005 <0.005 <0.005 <0.005 <br /> GMX-31 10/12/2000 9.5 NA NA <50 <0.005 <0.005 <0.005 <0.005 <0.005 <br /> GMX-32 10/12/2000 9.0 NA NA 1,700 <0.005 <0.005 <0.005- <0.005 Chr 0.079 <br /> PST 0.057 <br /> GMX-33 10/13/2000 8.0 NA NA <50 - <0.005 <0.005 <0.005 <0.005 <0.005 <br /> Abbreviations: <br /> <=Analyte not detected above the laboratory reporting limit shown <br /> bgs=below ground surface <br /> NA=Not analyzed <br /> PAHs-Polynuclear aromatic hydrocarbons <br /> TPHc-Total petroleum hydrocarbons quantified as crude oilC <br /> ( ra-C,,) <br /> TPHd=Total petroleum hydrocarbons quantified as diesel(C 16-C,,4) <br /> TPHg=Total petroleum hydrocarbons quantified as gasoline(C6 C1=) <br /> Notes: <br /> Detected concentrations are noted in bold face type. <br /> 1. Samples were collected by Geomanix Consultants,Inc.(except where noted)and analyzed by Freidman and Bruya,Inc.for TPHg, <br /> TPHd,and TPHc by EPA Method 8015 modified;for benzene,toluene,ethylbenzene,and total xylenes(BTM by EPA Method 8026B; <br /> and for PAHs by EPA Method 8270C SIM. <br /> 2. Only Detected PNAs are shown:Acn=Acenaphthene,B(a)A=Benzo(a)anthracene,Chr=Chrysenc,Flt=Fluoranthene,Flr=Fluorene, <br /> Nph=Naphthalene,Phn=Phenanthrene,and Pyr=Pyrene <br /> 3. Samples were collected by Earth Systems Consultants and analyzed by Chromalab,Inc.for for total extractable petroleum hydrocarbons <br /> quantified as diesel,motor oil,and crude oil by EPA Method 8015modified and BTEX by EPA Method 8020;and by Friedman and <br /> Bruya,Inc.for PAHs by EPA Method 9270 SIM.No TPH quantified as motor oil was detected. <br /> Source: <br /> Geomatrix,2000.Report of Additional Soil and Groundwater Investigation,Pombo Property,Tracy,California,December. <br /> M <br />