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Table 4 <br /> Ground Water Grab Sampling Results <br />' Former Tank Site I <br /> Former Heinz Facility <br /> Tracy,California <br />' Sample Depth Total <br /> Location (feet bgs) Date TPH-G TPH-D Benzene Toluene Ethylbenzene Xylenes MTBE <br />' Tank Excavation <br /> UST1-GW1 Bottom 2/24/98 45,000 <200 130 540 1,600 3,000 <1,000 <br /> USTI-GW2 Bottom 3/10/98 75,000 NA 170 1,100 2,100 4,100 ND <br />' HydroPunch Samples <br /> HB-6 6-8 4/2/98 2,700,000 NA 1,600 <1,300 14,000 17,000 <13,000 <br /> HB-7 4-8 4/2/98 <50 NA <0 5 <05 <05 <0 5 <5 <br />' HB-8 6-8 4/2/98 <50 NA <0 5 <05 <05 <0 5 <5 <br /> HB-9 8-12 4/2/98 <50 NA <0 5 <05 <05 <0 5 <5 <br /> HB-10 10-14 4/3/98 <50 NA <0 5 <05 <05 <0 5 <5 <br /> Additional HydroPunch Samples <br />' HB-17 10-15 2/11/99 1,100,000 NA <2,500 8,000 12,000 49,000 NA <br /> HB-17 30-33 2/11/99 3,400 NA <2 5 18 49 180 NA <br />' Notes <br /> (1)All ground water concentrations expressed in micrograms per titer <br /> bgs=below ground surface <br /> TPH-D=total petroleum hydrocarbons as diesel <br /> TPH-G=total petroleum hydrocarbons as gasoline <br /> MTBE=methyl tertiary-butyl ether <br /> NA=not analyzed <br />