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a <br /> Page i3 of 20 <br /> Table 1 w <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station#2093 <br /> 3425 Tracy Blvd,Tracy,CA <br /> Well Depth Groundwater Groundwater Product Ethyl- Xylenes <br /> Well Data Elevation to Water Bevabon Elevation Thickness TPH9 Benzene Toluene benzene (total) MtBE DO <br /> Number Sampled (ft,MSL) (ft,TOC) (ft,MSL) Change(ft) (ft) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mg/L) <br /> ATR-8 11/17/97 NP - -- -- 4,200 57 <0 5 <0 5 250 <2 5 <br /> (cont) 3130/98 NP 802 3796 -- 320 1 7 <0 5 <0 5 2 4 <5 0/<2 0* 0 80 <br /> 6125198 NP 969 3629 -167 876 300 190 8 71 176 <5 0 140 <br /> 9/11/98 Well paved over <br /> 12!15/98 NP 4611 886 3725 456 102 0 690 612 809 <5 0 070 <br /> 3/17/99 NP 855 3756 -0 31 -- 130 212 0 528 212 2 71 <5 0 2 50 <br /> 5/14/99 NP B 81 3730 026 155 179 <0 5 241 200 <5 0 420 <br /> 9116/99 NP 9 17 3694 036 -- 747 278 142 9 88 840 <5 0 180 <br /> 12/22/99 NP 7 99 3812 -1 18 - 648 <0 5 0 586 585 536 <2 50 0 31 <br /> 2!29100 NP 818 3793 -019 142 1 60 <0 5 239 136 <2 50 620 <br /> 6£7100 NP 902 3709 -084 576 4 82 <0 500 843 <2 50 <125 -- <br /> 9/25/00 NP 987 3624 -085 -- 2,720 563 114 331 473 <50 0 -- <br /> 12J29100 P 838 3773 149 2,350 <5 00 <5 00 191 <5 00 <2 00' 5 1 <br /> 3/27/01 P 966 3645 -128 - <50 0 <0 500 <0 500 <0 500 <0 500 <2 00* 2 7 <br /> 6/20/01 P 899 3712 067 150 <1 0 <1 0 16 2 9 <2 0` -- <br /> 9/12101 P 911 3700 -012 810 13 37 44 84 <26 17 <br /> 12/19/01 P 878 3733 0 33 380, 0 81 <0 50 2 5 1 5 21* 048 <br /> 3114102 P Soo 3731 -002 -• 170' <0 50 <0 5o 0 71 <0 50 <0 50" 0 72 <br /> ATR-9 10/16/90 48 68 <50 <0 5 <0 5 <0 5 <0 5 10/19/90 11 i i 3767 -- .. .. __ <br /> 1/10191 1104 3764 0 07 <50 <0 5 <0 5 <0 5 <0 5 - -- <br /> 4/10/91 1082 3786 0 22 <50 <0 5 <0 5 <0 5 <0 5 - -- <br /> 7/10/91 1106 3762 -024 <50 <0 5 <0 5 <0 5 <0 5 - <br /> 9/24191 1129 3739 -023 <br /> 9/25191 -- <50 <0 5 <0 5 <0 5 <0 5 -- <br /> 1/23/92 1096 3772 -- <50 <0 5 <0 5 <0 5 <0 5 -- <br /> 4/20/92 1088 3780 008 <br /> 4121192 -- -- <50 <0 5 <0 5 <0 5 <0 5 -- <br /> 7/8192 1106 3762 -- <50 <0 5 <0 5 <0 5 <0 5 - <br /> 10/7/92 11 16 3762 -010 -- <50 <0 5 <0 5 <0 5 <0 5 - <br /> 1/18193 1034 3834 082 <50 <0 5 <0 5 <0 5 <0 5 - -- <br /> 4/14/93 1070 3798 -036 <50 <0 5 <0 5 <0 5 <0 5 <br /> 8/30/93 11 17 3751 -047 <50 <0 5 <0 5 <0 5 <0 5 -- <br /> 10/27/93 i 1 23 3745 -0 06 <50 <0 5 <0 5 <0 5 0 7 -- - <br /> 2/17/94 1089 3779 0 34 <br /> Prolects/ARCO/2093/Reports/Tablea/gwtables2093 As <br />