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s • � <br /> Table 1 Page 2 of 18 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station#2093 <br /> 3425 Tracy Blvd,Tracy,California <br /> Floa4ng <br /> Well Depth product Groundwater Groundwater Total <br /> Date Elevation to Waler thickness Elevation Elevation Change TPHg Benzene Toluene Ethylbenzene Xylenes MTBE DO <br /> Sampled (feet MSL) (feet TOC) in feet (feet,MSL) (feet) b b b b b) (m I) <br /> 07/18/96 1328 3730 0 38 <50 <0 5 <0 5 <0 5 <0 5 <5 - <br /> ATR 1 11/15/96 1374 36 84 0 46 -- -- -- -- -- - <br /> (conk) 03/14/97 NP 1368 3690 006 <50 <0 5 <0 5 <0 5 <0 5 030 <br /> 06/04197 1304 3754 0 64 - -- -- -- - 022 <br /> 08/11/97 NP 1343 3715 0 39 <50 <0 5 <0 5 <0 5 <0 5 23 - <br /> 11/17/97 1329 3729 0 14 -- -- -- -- -- <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 -0 98 - -- -- -- <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 37 56 0 18 -- -- - -- - 130 <br /> 03/17/99 NP 1279 3779 023 <50 <0 5 <0 5 <0 5 <0 5 <50 510 <br /> 05/14/99 1306 3752 -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 13 19 3739 017 _ _ -- -- -- 177 <br /> 02/29/00 NP 12 45 38 13 074 <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 13 39 37 19 -0 21 <50 <0 5 <0 5 <0 5 255 <2 5 0 30 <br /> 12/29/00 1299 3759 040 -- -- — — -- -- 5 3 <br /> ATR 2 04/23/87 4922 11 28 - 3794 - <100 <0 5 0 6 <0 5 <0 5 - <br /> 12/22187 11 40 3782 -012 - <0 5 <0 5 <0 5 <0 5 -- - <br /> 03/24/88 11 35 37 87 005 <0 5 <0 5 <0 5 <0 5 <br /> 06/23/88 11 55 3767 -0 20 <0 5 <0 5 <0 5 <0 5 <br /> 09/29/88 11 71 3751 -0 16 <0 5 <0 5 <0 5 <0 5 <br /> 02/22/89 11 35 3787 036 370 1 8 0 7 0 6 3 4 <br /> 06/21/89 11 45 3777 010 <50 1 9 <0 3 04 <0 3 <br /> 09/18/89 11 65 37 57 -020 9 1 9 0 9 1 1 8 2 <br /> 12/27/89 11 50 3772 0 15 <50 3 5 <0 3 1 1 0 3 - <br /> 04/18/90 11 64 3758 -014 50 2 9 <0 3 <0 3 <0 3 <br /> 10/16/90 11 81 3741 0 17 <50 <0 5 <0 5 <0 5 <0 5 <br /> 10/19/90 11 81 3741 000 -- - - -- <br /> 01/10/91 <br /> - <br /> 01/10/91 11 58 3764 0 23 <50 0 8 <0 5 <0 5 <0 5 <br /> 04/10/91 11 35 3787 023 <50 <0 5 <0 5 <0 5 <0 5 <br /> 07/10/91 11 74 3748 -039 <50 <0 5 <0 5 <0 5 <0 5 <br /> 09/24/91 1202 3720 -0 28 <50 <0 5 <0 5 <0 5 <0 5 <br />