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Tab Paq)of 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 Elevation 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/[) <br /> ATR-1 11/15/96 1374 - 36 84 -046 -- - - - - -- <br /> (cont) 03/14/97 NP 1368 3690 006 <50 <0 5 <0 5 <0 5 <0 5 0 30 <br /> 05/04/97 1304 -- 3764 064 - -- - -- -- 022 <br /> 08/11/97 NP 1343 3715 -039 <50 <0 5 <0 5 <0 5 <0 5 23 <br /> 11/17/97 1329 - 3729 014 -- -- - - - <br /> 03/30/98 NP 1258 3800 0711 <50 <0 5 <0 5 <0 5 <0 5 <50 200 <br /> 06/25/98 1356 -- 3702 098 -- -- - - <br /> 09/11/98 NP 1320 -- 3738 0 36 <50 <0 5 <0 5 <0 5 <0 5 <2 5 104 <br /> 12/15/98 1302 3756 018 - - - 1 30 <br /> 03/17/99 NP 1279 3779 023 <50 <0 5 <0 5 <0 5 <0 5 <5 0 5`10 <br /> 05/14/99 1306 3762 027 - - - - 220 <br /> 09/16/99 NP 1336 3722 -030 <50 <0 5 <0 5 <0 5 <0 5 <5 0 330 <br /> 12/22/99 1319 -- 3739 0 17 -- - - - - 1 77 <br /> 02/29/00 NP 1245 -- 3813 074 <50 <0 5 <0 5 <0 5 <0 5 <2 5 4 90 <br /> 06/07/00 NP 1318 -- 3740 -073 -- -- -- - -- - - <br /> 09/25/00 NP 1339 -- 3719 021 <50 <0 5 <0 5 <0 5 255 <2 5 030 <br /> 12/29/00 1299 -- 37 59 0 40 -- -- - -- - -- 53 <br /> 07101 Inaccessible Well-No Sample <br /> ATR-2 04/23/87 4922 1128 -- 3794 -- <100 <0 5 0 6 <0 5 <0 5 <br /> 12!22187 1140 -- 3782 012 -- <0 5 <0 5 <0 5 <0 5 <br /> 03/24/88 1135 -- 3787 005 <0 5 <0 5 <0 5 <0 5 <br /> 06/23/88 1155 - 3767 -020 -- <0 5 <0 5 <0 5 <0 5 <br /> 09/29/88 1171 -- 3751 -016 <0 5 <0 5 <0 5 <0 5 - <br /> 02/22/89 1136 -- 3787 036 370 18 07 06 34 <br /> 06/21/89 1146 3777 -010 <50 19 <0 3 04 <0 3 <br /> 09/18/89 1165 - 3757 -020 9 19 0 9 1 1 82 <br /> 12/27/89 1150 - 3772 016 <50 3 5 <0 3 1 1 0 3 - <br /> 04/18/90 1164 3758 -014 50 29 <03 <0 3 <0 3 <br /> 10/16/90 1181 -- 3741 -017 <50 <0 5 <0 5 <0 5 <0 5 <br /> 10/19/90 1181 37 41 000 -- - - <br /> 01/10/91 1158 -- 3764 023 <50 0 8 <0 5 <0 5 <0 5 <br /> 04/10/91 1135 -- 3787 023 <50 <0 5 <0 5 <0 5 <0 5 <br /> 07/10/91 1174 -- 3748 -039 <50 <0 5 <0 5 <0 5 <0 5 - <br /> 09124191 112 02 3720 -028 <50 <0 5 <0 5 <0 5 <0 5 <br /> 01/23/92 1160 - 3762 042 <50 <0 5 <0 5 <0 6 <0 5 - <br />