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Table 3 <br /> • Ground Water Sampling Results <br />' Former UST#1 Area <br /> Former Heinz Facility <br /> Tracy, California <br />' Sample Depth Total <br /> Location (feet bgs) Date TPH-G TFH-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 /> UST1-GW2 Bottom 3/10/98 75,000 NA 170 1,100 2,100 4,100 ND <br />' Hydro Punch 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 <0 5 <0 5 <0 5 <5 <br /> HB-8 6-8 4/2/98 <50 NA <0 5 <0 5 <0 5 <0 5 <5 <br /> HB-9 8-12 4/2/98 <50 NA <0 5 <0 5 <0 5 <0 5 <5 <br /> HB-10 10-14 4/3/98 <50 NA <0 5 <0 5 <0 5 <0 5 <5 <br /> Monitoring Wells <br /> MW-1 - 5/1/98 7,400 NA 53 190 340 820 <250 <br /> MW-1 - 6/2/98 4,100 NA 44 110 180 450 <63 <br />' MW-1 - 7/15/98 4,600 NA 50 88 270 370 <50 <br /> MW-1 - 9/10/98 2,000 NA 22 30 120 140 X50 <br /> MW-1 - 11/16/98 2,600 <50 27 44 120 190 <50 <br /> MW-1 - 12/16/98 4,300 <100 49 96 230 360 <250 <br /> MW-3 - 11/16/98 <50 <50 <0 5 <0 5 <0 5 <0 5 <5 <br /> MW-313 - 11/16/98 <50 NA <0 5 <0 5 <0 5 <0 5 <5 <br />' MW-3 - 12/16/98 <50 <50 <0 5 <0 5 <0 5 <0 5 <q <br /> MW-4 11/16/98 120,000 <50 540 4,700 2,900 9,900 <2,500 <br /> MW-4 - 12/16/98 120,000 <300 490 3,600 2,500 8,500 <2,500 <br />' February Investigation <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 liter <br />' bgs=below ground surface <br /> • <br />