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Table 4 <br /> Ground Water Grab Sampling Results <br /> Former Tank Site 1 <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 /> USTl-GW1 Bottom 2/24/98 45,000 <200 130 540 1,600 3,000 <1,000 <br /> U5Tl-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 Q,300 14,000 17,000 <13,000 <br /> HB-7 4-8 4/2/98 <50 NA <0 5 <05 <0 5 <05 <5 <br />' HB-8 6-8 4/2/98 <50 NA <0 5 <0 5 <0 5 <05 <5 <br /> HB-9 8-12 4/2/98 <50 NA <05 <0 5 <05 <05 <5 <br /> HB-10 10-14 4/3/98 <50 NA <05 <0 5 <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 <25 18 49 180 NA <br />' Notes <br /> (1)All ground water concentrations expressed in micrograms per Iiter <br /> bgs=below ground surface <br /> TPH-D=total petroleum hydrocarbons as diesel <br /> TPH-G=totaI petroleum hydrocarbons as gasoline <br /> MTBE=methyl tertiary-butyl ether <br />' NA=not analyzed <br /> 1 <br /> 1 <br /> 1� <br />