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Table 6 Soil Sampling Results Former Tank Site 2 Former Heinz Facility Tracy,California ' Depth Total Location (feet bgs) Date TPH-G TPH-D Benzene Toluene Ethylbenzene Xylenes MTBE Tank Excavation Samples UST2-1 575 2/23/98 20 <10 <0 05 <0 05 015 015 <0 5 UST2-2 525 2/23/98 7,600 <50 12 120 140 620 <100 UST2-3 575 2/23/98 550 <10 <0 5 057 72 20 <5 UST2-4 575 2/23/98 2,900 <20 34 41 59 230 <12 UST2-5 10 3/9/98 66 NA 013 1 083 34 <1 ' UST2-6 65 3/9/98 1,500 NA <13 42 24 56 <13 UST2-7 6 3/10/98 14,000 NA 39 450 250 1,200 <130 Initial Soil Borings HB-1 7 4/2/98 <5 NA <0 05 <0 05 <0 05 <0 05 <0 5 H13-2 7 4/2/98 <5 NA <0 05 <0 05 <0 05 <0 05 <05 HB-3 7 4/2/98 <5 NA <0 05 <0 05 <0 05 <0 05 <0 5 HB-4 7 4/2/98 <5 NA <0 05 <0 05 <0 05 <0 05 <05 HB-5 45 4/2/98 <5 NA <0 05 <0 05 <0 05 <0 05 <0 5 HB-11 6 4/2/98 <5 NA <0 05 <0 05 <0 05 009 <05 HB-11 85 4/2/98 350 NA <0 25 12 2 10 <25 HB-12 55 4/2/98 <5 NA <0 05 <0 05 <0 05 <0 05 <0 5 HB-12 85 4/2/98 <5 NA <0 05 <0 05 <0 05 <0 05 <0 5 HB-13 25 4/2/98 52 NA <0 05 <0 05 <0 05 <0 05 <0 5 ' HB-13 5 4/2/98 69 NA <0 05 <0 05 034 042 <0 5 HB-14 35 4/2/98 <5 NA <0 05 005 <0 05 006 <05 HB-14 5 4/2/98 85 NA 011 008 1 033 <0 5 ' Monitoring Wells MW-5 10-115 11/10/98 <5 <10 <0 05 <0 05 <0 05 <0 05 <05 MW-6 10-115 11/10/98 <5 <10 <0 05 <0 05 <0 05 <0 05 <05 ' Additional Soil Borings HB-20 4 2/11/99 <5 NA <0 05 <0 05 <0 05 <0 05 NA HB-20 17 2/11/99 34 NA <0 05 <0 05 078 22 NA ' HB-20 225 2/11/99 27 NA <0 05 <0 05 052 14 NA HB-20 28 2/11/99 <5 NA <0 05 <0 05 <0 05 007 NA HB-20 38 2/11/99 <5 NA <0 05 <0 05 <0 05 011 NA Notes (1)All soil concentrations expressed in milligrams per kilogram bgs=below ground surface ' TPH-D=total petroleum hydrocarbons as diesel TPH-G=total petroleum hydrocarbons as gasoline MTBE=methyl tertiary-butyl ether NA=not analyzed r