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• TWO Pago1 18 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station#2093 <br /> 3425 Tracy Blvd,Tracy,Califomia <br /> Floating <br /> Well Depth product Groundwater Groundwater Total <br /> Date Elevation to Water thickness Elevation Elevaticn Change TPHg Benzene Toluene Ethylbenzene Xylenes MTBE DO <br /> Sampled (feet MSL) (feet,TOC) in feet (feet,MSL) (feet) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mg/1) <br /> ATR-8 07/18/96 895 3703 -051 88,000 72 220 620 2,500 <500 - <br /> (cont) 11/15/96 940 -- 3658 -045 52,000 110 130 240 1 300 <200 - <br /> 03/14/97 924 3674 016 350 42 <0 5 16 26 <2 5 0 10 <br /> 06/04/97 NP 869 - 3729 056 1,200 42 62 82 150 <2 5 003 <br /> 08/11/97 NP 910 - 3688 -041 7,800 280 75 140 710 <25 - <br /> 11/17/97 NP -- - -- -- 4,200 57 <0 5 <0 5 250 <2 5 - <br /> 03/30/98 NP 802 - 3796 -- 320 17 <0 5 <0 5 24 <5 01<2 0' 080 <br /> 06/25/98 NP 969 - 3629 -167 876 Soo 1 90 871 176 <5 0 1 40 <br /> 09/11/98 Well Paved Over -- - - <br /> 12/15/98 NP 4611 886 -- 3725 -- 456 102 0 690 612 809 <5 0 070 <br /> 03/17/99 NP 855 - 3766 -0 31 130 212 0 528 212 271 <5 0 250 <br /> 05/14/99 NP 881 - 3730 026 155 179 <0 5 241 200 <5 0 420 <br /> 09/16/99 NP 917 -- 3694 036 747 276 142 988 840 <5 0 180 <br /> 12/22/99 NP 799 -- 3812 -1 18 648 <0 5 0 586 585 536 <2 50 031 <br /> 02/29/00 NP 818 - 3793 -019 142 160 <0 5 239 1 36 <2 50 620 <br /> 06/07/00 NP 902 - 3709 -084 576 482 <0 500 843 <2 50 <12 5 - <br /> 09/25/00 NP 987 - 3624 -085 2,720 563 114 331 473 <50 0 - <br /> 12/29/00 P 838 - 3773 1 49 2,350 <5 00 <5 00 191 <5 00 <2 00" 51 <br /> 03127/01 P 966 -- 3645 -128 <50 0 <0 500 <0 500 <0 500 <0 500 <2 00` 27 <br /> ATR 9 10/16/90 4868 -- -- -- <50 <0 5 <0 5 <0 5 <0 5 - - <br /> 10/19/90 11 11 - 3767 -- - -- - " <br /> 01/10/91 1104 3764 007 <50 <0 5 <0 5 <0 5 <0 5 <br /> 04/10/91 1082 3786 022 <50 <0 5 <0 5 <0 5 <0 5 <br /> 07/10/91 1106 -- 3762 024 <50 <0 5 <0 5 <0 5 <0 5 <br /> 09/24/91 1129 -- 3739 023 -- -- - -- <br /> 09/25/91 -- - -- -- <50 <0 5 <0 5 <0 5 <0 5 <br /> 01/23192 1096 -- 3772 -- <50 <0 5 <0 5 <0 5 <0 5 <br /> 04/20/92 1088 3780 008 -- -- -- -- <br /> 04/21/92 -- -- -- <50 <0 5 <0 5 <0 5 <0 5 <br /> 07/08/92 1106 -- 3762 -- <50 <0 5 <0 5 <0 5 <0 5 <br /> 10/07/92 11 16 -- 37S2 010 <60 <0 5 <0 5 <0 5 <0 5 -- <br /> 01/18/93 W 34 -- 3834 082 <50 <0 5 <0 5 <0 5 <0 5 - <br /> 04/14/93 1070 -- 37 96 -036 <50 <0 5 <0 5 <0 5 <0 5 <br /> OB/30193 11 17 3761 047 <50 <0 5 <0 5 <0 5 <0 5 <br /> 10/27/93 1123 3746 -006 <50 <0 5 <0 5 <0 5 07 <br />