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TABLE 1 Summary of Results of Ground Water Monitoring and Sampling Southland Location No. 20304 455 Grant Line Road, Tracy,California Project No.30-0655 Concentrations are in parts per million (ppb) SAMPLE DATEOF CASING DEPTH GROUND FREE TPH-G B T E x Ethylene Fecal ID SAMPLING ELEVATION TO WATER PRODUCT Dibromide Lead Cowwm* WATER ELEVATION THICKNESS (E.C.) MW-8 01/24/88 28.00 3.25 22.75 0.00 3700 1300 170 18 470 NO --- MW-8 Jul 88 --- --- --- 0.00 1800 780 69 38 290 --- NO MW-8 Aug 68 --- --- --- 0.00 --- --- --- --- --- NO --- MW-8 03/21/89 26.00 3.43 22.57 0.00 NO NO NO NO NO ---- --- MW-8 06110/91 26.00 4.70 21.30 0.00 8DW 1700 94 390 480 --- --- MW-8 09/12191 28.00 4.94 21.09 0.00 1400 800 31 150 140 --- ---- <2 MW-8 12/30/91 26.00 3.95 22.05 0.00 3000 800 90 140 230 --- --- >18 MW-8 03/31/92 26.00 3.56 22.44 0.00 2800 810 95 190 250 --- --- 5 MW-8 06/19/92 26.00 4.48 21.52 0.00 5000 970 68 220 210 --- --- >16 461X1 :.. ...... , ,d 5 7a x,24 O s�C 2590 ;;: 19DG` 7D 39G tT4 MW-9 07/20/88 25.97 4.52 21.45 0.00 46000 9500 910 1900 5500 --- MW-9 03/21/89 25.97 3.87 22.10 0.00 57000 4 1100 40 1700 --- --- MW-9 Mer 91 --- --- --- 0.00 32000 8200 550 2600 9300 --- --- MW-9 08/10/91 25.97 4.25 21.72 0.00 49000 6200 430 2200 2700 --- ---- MW-9 09/12/91 25.97 5.38 20.59 0.00 37000 7000 520 2500 3600 --- --- 1600 MW-9 12/30/91 25.97 4.41 21.56 0.00 42000 6400 490 2700 3400 --- --- >16 MW-9 03/31/92 25.97 4.38 21.59 0.00 32000 5500 400 2100 3000 ---- --- <2 MW-9 08/19/92 25.97 4.84 21.13 SHEEN 66000 7600 750 880 2700 --- --- 9.2 A1N»6 Oq/21/92 25 97 a.4 k, 1956 .. . :SHEETI. ... .... .. ..... MW-10 07/20/88 25.72 4.29 21.43 0.00 74000 28000 &%W 2500 1200 --- --- MW-10 03/21/89 25.72 3.66 22.06 0.00 94000 19 2300 200 8300 --- --- MW-10 06/10/91 25.72 4.43 21.29 0.00 100000 21000 840 2900 10000 --- --- MW-10 09/12/91 25.72 5.14 20.58 0.00 7800 15000 470 2500 8500 ---- --- 4 MW-10 12/30191*** 25.72 4.13 21.59 0.00 38000 7500 300 1600 5500 --- --- >18 MW-10 12/30/91** 25.72 4.13 21.59 0.00 73000 14000 500 2700 9700 --- --- --- MW-10 03/31192 25.72 3.75 21,97 0.00 91000 21000 940 4000 13000 ---- --- <2 MW-10 08/19/9225.72 5.67 20.05 0.00 37000 8300 710 530 2600 --- --- 9.2 . MW-11 07/20/86 25.53 4.15 21.38 0.00 ND ND NO NO ND --- --- MW-11 03/21/89 25.53 3.58 21.95 0,00 NO NO ND NO ND --- ---- MW-11 08/10/91 25.53 4.3 21.23 0.00 NO ND NO NO ND --- --- MW-11 09/12/91 25.53 4.97 20,56 0.00 ND NO NO NO ND ---- --- 30 MW-11 12/30/91 25.53 3.96 21.65 0.00 ND NO NO NO ND --- --- >16 MW-11 03/31/92 25.53 3.62 21.91 0.00 NO NO NO NO ND --- --- 2 MW-11 06/19/92 25.53 4.53 21.000.00 NO NO NO NO NO --- ----- >16 Aft:' IVO::; Nf�. .;'° Np. . .- ... 13-Oct-22 Papa 3 of 5