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Page 7 of 19 <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station 02093 <br /> 3425 Tracy Blvd,Tracy,CA <br /> Well Depth Groundwater Groundwater Product Ethyl- Xylenes <br /> Wail Data Devation to Water Elevation Elevation Thickness TPHg 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-4 12!27199 NP 1089 004 <50 <0 5 <0 5 <0 5 <0 5 857 168 <br /> (cant) 2129100 NP 1026 -- 0 63 <50 <0 5 <0 5 <0 5 <0 5 <2 5 3 1 <br /> 617/00 NP 1106 -- -080 -- <50 <0 5 <0 5 <0 5 <0 5 842 -- <br /> 9/25/00 NP 1124 -018 <50 <0 5 <0 5 <0 5 <0 5 28 0 070 <br /> 12/29/00 P 1081 -- 0 43 -- <50 0 <0 500 <0 500 <0 500 <0 500 636* 4 6 <br /> 3/27/01 P 1064 0 17 <50 0 <0 500 <0 500 <0 500 <0 500 <2 00* 3 1 <br /> 6/20/01 P 1084 - -020 <50 <0 50 <0 50 <0 50 <0 60 <2 0* -- <br /> 9112/01 P 1094 — -010 — <50 <0 50 <0 50 <0 50 <0 50 <2 5 2 4 <br /> ATR-5 3110189 48 73 -- -- -- 6,600 693 <5 0 327 7 -- -- <br /> 6129/89 1052 38 21 -- 2,200 490 24 280 13 -- <br /> 9/18/89 1098 3775 -046 - 1,000 68 1 1 63 5 8 -- <br /> 12/27/89 1076 37 97 0 22 2,200 94 2 150 <1 <br /> 4/18/90 1090 3783 -014 1,900 120 26 6 8 140 <br /> 10/16/90 — -- -- - 1,000 Is 47 79 16 -- <br /> 10/19/90 11 10 37 63 - -- -- -- -- -- - <br /> 1/10/91 1084 37 89 026 -- 350 71 12 16 2 6 -- <br /> 4/10/91 1067 3806 0 17 - 370 4 6 <0 5 7 <0 5 - <br /> 7/10/91 1102 3771 -035 -- 1,200 9 5 <0 5 18 16 -- <br /> 9/24/91 1129 3744 -027 -- <50 <0 5 <0 5 <0 5 <0 5 -- <br /> 1/23/92 1078 3795 0 51 - 180 14 15 15 <0 6 -- - <br /> 4120/92 1070 3803 008 -- -- -- -- -- -- <br /> 4/21/92 <br /> _4121/92 -- -- -- -- 290 1 6 <0 5 2 <0 5 -- - <br /> 718/92 1097 3776 -- -- 240 <0 5 <0 6 0 6 <0 5 -- <br /> 10/7/92 11 11 3762 -014 - -- -- -- __ -- <br /> 10/8192 -- -- -- - 160 <0 5 <0 5 <0 5 <0 5 -- -- <br /> 1/18/93 994 3879 -- -- -- .. _- <br /> 1119/93 -- -- -- 1,000 25 <0 6 7 9 1 3 -- - <br /> 4/14/93 1047 3826 -- -- .. .. .. .. <br /> 4/15/93 — -- — -- 810 15 <0 5 8 3 0 9 -- - <br /> 8/31/93 1116 3767 -- - 80 <0 5 <0 5 <0 5 <0 5 -- -- <br /> 10/27/93 11 11 3762 006 -- 63 <0 5 <0 5 <0 5 <0 5 -- <br /> 2118194 1073 3800 0 38 - 160 3 5 1 4 -- <br /> 6/20l94 1082 3791 -009 -- 600 <0 3 2 12 17 -- <br /> 1017/94 11 14 3759 -032 -- 660 <0 5 <0 5 <0 5 <0 5 — -- <br /> 12/16/94 1077 3796 037 -- 410 65 <0 5 <0 5 <0 5 -- - <br /> Projects(ARCO/2093/Reports/Tablestgwtables2093 xis <br /> I <br />