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Page i3 of 20 <br /> Table 1 <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 Date Elevation to Water Elevation 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) (mglL) <br /> ATR-8 9/16199 NP 9 17 3694 0 36 -- 747 27 8 142 988 840 <5 0 180 <br /> (cont) 12/22!99 NP 799 3812 1 18 648 <0 5 0 586 5 85 536 <2 50 0 31 <br /> 2/29/00 NP 818 3793 -019 -- 142 160 <0 5 2 39 1 36 <2 50 620 <br /> 6!7/00 NP 902 3709 -0 84 576 482 <0 500 843 <2 50 <125 <br /> 9/25/00 NP 987 36 24 -0 85 2,720 563 114 331 473 <50 0 -- <br /> 12/29/00 P 838 3773 149 -- 2,350 <5 00 <5 00 19 1 <5 00 <2 00" 51 <br /> 3127101 P 966 3645 -128 - <50 0 <0 500 <0 500 <0 500 <0 500 <2 00' 2 7 <br /> 6(20/01 P 8 99 3712 0 67 150 <1 0 <1 0 16 2 9 <2 0" <br /> 9112101 P 911 3700 -012 -- 810 13 37 44 84 <26 17 <br /> 12/19/01 P 8 78 3733 033 -- 380' 081 <0 50 2 5 15 21' 0 48 <br /> ATR-9 10/16190 4868 -- -- -- <50 <0 5 <0 5 <0 5 <0 5 <br /> 10/19/90 11 11 3757 -- <br /> 1/10/91 1104 37 64 007 <50 <0 5 <0 5 <0 5 <0 5 <br /> 4/10/91 1082 3786 022 -- <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 /> 9/24/91 1129 3739 -023 - -- -- <br /> 9/2&91 -- -- <50 <0 5 <0 5 <0 5 <0 5 - <br /> 1/23/92 10 96 3772 <50 <0 5 <0 5 <0 5 <0 5 - <br /> 4/20/92 1088 37 80 008 __ <br /> 4/21/92 _ __ __ -- <50 <0 5 <0 5 <0 5 <0 5 -. <br /> 718/92 1106 3762 -- <50 <0 5 <0 5 <0 5 <0 5 - <br /> 1017/92 11 16 37 52 -010 -- <50 <0 5 <0 5 <0 5 <0 5 - <br /> 1/18/93 1034 3834 082 <50 <0 5 <0 5 <0 5 <0 5 <br /> 4/14/83 1070 37 96 -0 36 <50 <0 5 <0 5 <0 5 <0 5 _- <br /> 8/30/93 11 17 $761 -047 <60 <0 5 <0 5 <0 5 <0 5 <br /> 10/27/93 1123 3745 -006 - <50 <0 5 <0 5 <0 5 07 <br /> 017/94 10 89 3779 0 34 __ -- - <br /> 2/i8(94 -- -- -- -- <10 <0 3 0 4 <0 3 <0 6 <br /> 5120194 1097 3771 <10 <0 3 <0 3 <0 3 <0 5 <br /> 1017/94 11 19 3749 -0 22 -- <50 <0 5 <0 5 <0 5 <0 5 <br /> 12/16/94 1091 37 77 0 211 - <50 <0 5 <0 5 <0 5 <0 5 -- <br /> 2128195 1093 3775 -002 -- <50 <0 5 <0 5 <0 5 <0 6 -' y <br /> 4/26/95 1146 3722 -0 63 <50 <0 5 <0 5 <0 5 <0 5 + <br /> 7/27195 1173 3695 -027 -- __ <br /> 10/26195 1180 3688 -007 - <50 <0 5 <0 5 <0 5 <0 5 <br /> Projects/ARCO/2093/ReportsrTables/gwtableaO93 As <br />