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' Table 4 <br /> Ground Water Sampling Results <br />' Former UST#2 Area <br /> Former Heinz Fact lity <br /> Tracy, California <br />' <br /> Depth Total <br /> Location (feet bgs) Date TPH-G TPH-D Benzene Toluene Ethylbenzene Xylenes MTBE <br /> iTank Excavation <br /> UST2-GW1 Bottom 2/24/98 84,000 <200 890 4,700 2,900 11,000 <2,500 <br /> UST2-GW2 Bottom 3/10/98 47,000 NA 630 3,700 2,100 7,700 <1,300 <br />' HydroPunch Samples <0 5 <5 <br /> HB-1 8-9 4/2/98 <50 NA <0 5 <0 5 <0 5 <br /> HB-2 9-10 4/2/98 <50 NA <0 5 <0 5 <0 5 <0 5 <5 <br /> HB-3 9-10 4/2/98 <50 NA <0 5 <0 5 <0 5 <0 5 <5 <br /> HB4 8-9 4/2/98 39,000 NA <50 65 <50 <50 <500 <br /> H13-5 8-9 4/2/98 <50 NA <0 5 <0 5 <0 5 <0 5 <5 <br /> Monitoring Wells <br /> MW-2 - 5/1/98 31,000 NA <100 <100 1,100 3,400 <1,000 <br /> MW-2 - 6/2/98 10,000 NA <25 <25 30 850 <250 <br /> iMW-2 - 7/15/98 5,400 NA <5 <5 21 260 <50 <br /> MW-2 - 9/10/98 1,600 NA <2 5 <2 5 <2 5 16 <25 <br /> MW-2 - 11/16/98 700 <50 <0 5 062 4 17 <5 <br /> i• MW-2 - 12/16/98 620 <50 <0 5 <0 5 25 056 <5 <br /> MW-5 - 11/16/98 <50 <50 <0 5 <0 5 <0 5 <0 5 <5 <br /> MW-5 - 12/16/98 <50 <50 <0 5 <0 5 <0 5 <0 5 <5 <br /> i MW-513 - 12/16/98 <50 NA <0 5 <0 5 <0 5 <0 5 <5 <br /> MW-6 11/16/98 98,000 <50 3,600 6,500 2,900 14,000 <2,500 <br /> MW-6 - 12/16/98 90,000 <300 3,600 6,200 3,300 12,000 <2,500 <br />' February Investigation <br /> HB-20 10-15 2/11/99 280,000 NA <500 <500 6,900 20,000 NA <br /> HB-20 30-33 2/11/99 6,000 NA <10 <10 190 540 NA <br />' Notes <br /> (1)All ground water concentrations expressed in micrograms per liter <br /> ibgs=below ground surface <br /> 1 <br /> 1 <br /> • <br /> 1 <br />