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Page 7 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 bate Elevation to Water sevabon 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 12115!98 NP 1075 -- 0 31 <50 <0 5 <0 5 <0 5 <0 5 <5 0 1 1 <br /> (cont) 3117199 NP 1053 0 22 - <50 <0 5 <0 5 <0 5 <0 5 <5 0 6 7 <br /> 5/14199 NP 1097 -- -0 44 -- <50 0 591 <0 5 <0 5 <0 5 8 720 20 <br /> 9/16/99 NP 1093 - 004 <50 <0 5 <0 5 <0 5 <0 5 <5 0 6 8 <br /> 12/22/99 NP 1089 004 -- <50 <0 5 <0 5 <0 5 <0 5 857 168 <br /> 2129100 NP 1026 '- 0 63 <50 <0 5 <0 5 <0 5 <0 5 <2 5 3 1 <br /> 6I7/00 NP 1106 -- -0 80 <50 <0 5 <0 5 <0 5 <0 5 842 -- <br /> 9125/00 NP 1124 -- -018 <50 <0 5 <0 5 <0 5 <0 5 28 0 070 <br /> 12/29/00 P 1081 -- 043 <50 0 <0 500 <0 500 <0 500 <0 500 636' 4 5 <br /> 3127/01 P 1064 017 <50 0 <0 500 <0 500 <0 500 <0 500 <2 00` 3 1 <br /> 6120/01 P 10 64 -- -020 - <50 <0 50 <0 50 <0 50 <0 50 <2 0' <br /> 9112/01 P 1094 -- -010 <50 <0 50 <0 50 <0 5o <0 50 <2 5 2 4 <br /> 12/19/01 P 10 7a — 016 -- <50 <0 50 <0 50 <0 50 <0 50 <2 0' 159 <br /> ATR-5 3110189 4873 -- -- 6,600 693 <5 0 327 7 -- _- <br /> 6/29189 1052 3821 — 2,200 490 2 4 280 13 <br /> 9/18/89 1098 3776 -046 -- 1,000 68 1 1 63 5 8 <br /> 12/27/89 1076 3797 0 22 2,200 94 2 150 <1 <br /> 4118190 1090 3783 -014 -- 1,900 120 2 6 6 8 140 - -. <br /> 10/16/90 -- -- -- 1,000 18 4 7 79 16 -- -- <br /> 10/19/90 11 10 37 63 <br /> 1/10/91 1084 3789 026 - 350 7 1 12 16 2 6 - -- <br /> 4/10/91 1067 3806 0 17 370 4 6 <0 5 7 <0 6 - <br /> 7/10/91 1102 3771 -035 -- 1,200 9 5 <0 5 18 15 -- -. <br /> 9124191 111129 37 44 -027 <50 <0 5 <0 5 <0 5 <0 5 _ <br /> 1/23192 1078 3795 0 51 180 14 15 16 <0 5 <br /> 4120/92 1070 38 03 008 -- -- -- -- -- -- -- <br /> 4/21/92 -- -- -- 290 16 <0 5 2 <0 5 - <br /> 718192 1097 3776 -- -- 240 <0 5 <0 5 0 6 <0 5 -- <br /> 1017/92 11 11 3762 -014 - -. -- __ <br /> 1018192 -- -- -- -- 160 <0 5 <0 5 <0 5 <0 5 -- - <br /> 1/18/93 9 94 3879 — - __ __ <br /> 1/19193 -- -- - 1,000 2 5 <0 5 7 9 13 - -- <br /> 4/14/93 1047 3826 - - __ — <br /> 4116/93 — -- -- 810 1 5 <0 5 8 3 0 9 <br /> 8/31193 1116 3757 -- 80 <0 5 <D5 <0 5 <0 5 <br /> Profects/ARCO/2093/ReportsVTables/gwtables2093 xls <br />