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TABLE 1 Soil-Cumulative Analyses Chevron-Historical Pipeline Portfolio Pombo Property-1755 West 11th Street. Tracy,California Concentrations in milligrams per kilogram(mg/kg) Depth Boring or Test Interval Ethyl- Pit ID Date (feet bgs) TPHg TPHd TPHc Benzene Toluene benzene Xylenes PAHs EB7-9-9.5' 7/29/1999 9-9.5 NA <50 3,400 <0.62 1.6 <0.62 0.7 Acn 0.54 13(a)A 0.13 Chr 0.54 Flt 0.071 Fir 3.9 Phn 5.1 Pyr 0.27 EB9-14.5-15' 7/29/1999 14.5-15 NA <50 4,300 <3.1 7.5 ti. <3.1 3.4 Acn 0.16 B(a)A 0.035 Chr 0.14 Flt 0.029 Fir 0.49 Phn 0.72 Pyr 0.093 GMX-1-11V 9/22/1999 11.0 <1 23 <50 <0.005 <0.005 <0.005 <0.005 <0.005 GMX-2-8.52 9/22/1999 8.5 870 6,800 18,000 <0.005 <0.005 0.035 0.07 Acn 0.76 (near EB9) Chr 0.43 Flt 0.098 Phn 3.7 Pyr 0.23 GMX-3-11.02 9/22/1999 11.0 <1 36 70 <0.005 <0.005 <0.005 <0.005 <0.005 GMX-4-11.0'- 9/22/1999 11.0 <1 22 <50 <0.005 <0.005 <0.005 <0.005 <0.005 GMX-6-11.52 9/22/1999 11.5 180 4,100 12,000 <0.005 <0.005 <0.005 <0.005 NA GMX-7-11.02 9/23/2003 11.0 150 4,700 10,000 <0.005 <0.005 <0.005 <0.005 NA (near EB7) GMX-8-12.0 9/23/2003 12.0 <1 <10 <50 <0.005 <0.005 <0.005 <0.005 ; <0.005 GMX-13-12.52 9/24/1999 12.5 1,000 400 880 <0.05 <0.05 13 0.55 Acn 0.034 " Fir 0.095 - Nph 3.3 Phn 0.053 GMX-15-12.52 9/22/1999 12.5 <1 <10 <50 <0.005 <0.005 <0.005 <0.005 <0.005 GMX-17-11.52 9/22/1999 11.5 <1 <10 <50 <0.005 <0.005 _ <0.005 <0.005 <0.005 GMX-19-13 9/24/1999 12.5 <1 <10 <50 <0.005 <0.005 <0.005 <0.005 <0.005 GMX-252 5/16/2000 13.0 NA NA <50 <0.005 <0.005 <0.005 <0.005 <0.005 GMX-26 5/16/2000 8.0 NA NA 120 <0.005 <0.005 <0.005 <0.005 <0.005 GMX-272 5/16/2000 8.0 NA NA <50 <0.005 <0.005 <0.005 <0.005 <0.005 GMX-302 10/12/2000 8.0 NA NA <50 <0.005 <0.005 <0.005 <0.005 <0.005 GMX-312 10/12/2000 9.5 NA NA <50 <0.005 <0.005 <0.005 <0.005 <0.005 GMX-322 10/12/2000 9.0 NA NA 1,700 <0.005 <0.005 <0.005 <0.005 Chr 0.079 Pyr 0.057 GMX-332 10/13/2000 8.0 NA NA <50 <0.005 <0.005 <0.005 <0.005 1 <0.005 - SB-1-S-8' 11/5/2003 8 NA NA <4.0 <0.005 <0.005 <0.005 <0.02 Phn 0.001 Other PAHs NO SB-2-S-8' 11/5/2003 8 NA NA <4.0 <0.005 <0.005 <0.005 <0.02 B(b)F 0.0003 B(g,h,i)P 0.0006 Phn 0.0009 Pyr 0.0006 Other PAHs NO SB-3-S4 11/5/2003 8 NA NA <4.0 <0.005 0.005 <0.005 `0.02 Phn 0.0005 Other PAHs NO SB4-S-5' 11/5/2003 5 NA NA 5.6 <0.005 <0.005 <0.005 <0.02 Phn 0.001 Pyr 0.0004 Other PAHs NO {{{ SB-4-S4 11/5/2003 8 NA NA <4.0 <0.005 <0.005 <0.005 <0.02 Phn 0.0004 Other PAHs NO SB-5-S-8' 11/5/2003 8 NA NA <4.0 <0.005 <0.005 <0.005 <0.02 Phn 0.0004