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Tab <br /> Pa�ot 18 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Stabon#2093 <br /> 3425 Tracy Blvd,Tracy,California <br /> Floabng <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) (mgA) <br /> 07/18/96 1328 - 3730 038 <50 <0 5 <0 5 <0 5 <0 5 <5 <br /> ATR-1 11/15/96 1374 -- 3684 -046 -- -- -- - -- -- - <br /> (cont) 03/14/97 NP 13 68 - 3690 006 <50 <0 5 <0 5 <0 5 <0 5 - 0 30 <br /> 06/04/97 1304 -- 3754 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 071 <50 <0 5 <0 5 <0 5 <0 5 <5 0 200 <br /> 06/25/98 1356 -- 3702 098 -- -- -- -- - - -- <br /> 09/11/98 NP 1320 -- 3738 036 <50 <0 5 <0 5 <0 5 <0 5 <2 5 104 <br /> 12!15198 1302 -- 3756 018 - -- -- - -- 130 <br /> 03/17/99 NP 1279 -- 3779 023 <50 <0 5 <0 5 <0 5 <0 5 <5 0 510 <br /> 06/14/99 1306 - 3752 027 -- -- - -- -- 220 <br /> 09/16/99 NP 1336 3722 0 30 <50 <0 5 <0 5 <0 5 <0 5 <5 0 330 <br /> 12/22/99 1319 3739 017 -- - - - - -- 177 <br /> 02/29/00 NP 1245 -- 3813 074 <50 <0 5 <0 5 <0 5 <0 5 <2 5 490 <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 /> ATR-2 04/23/87 4922 1128 3794 -- <100 <0 5 06 <0 5 <0 5 -- -- <br /> 12/22087 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 1135 - 3787 036 370 18 07 0 6 34 <br /> 06121/89 1145 -- 3777 -010 <50 19 <0 3 0 4 <0 3 <br /> 09/18189 1165 3767 -020 9 19 09 1 1 82 <br /> 12/27/89 1150 -- 3772 0115 <50 35 <0 3 1 1 03 <br /> 04/18/90 1164 -- 3758 -014 50 29 <0 3 <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 -- 3741 000 -- -- -- - -- <br /> 01/10/91 1158 -- 3764 023 <50 08 <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 /> 09/24/91 1202 -- 3720 028 <50 <0 5 <0 5 <0 5 <0 5 <br />