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i Tao Pof 17 <br /> Groundwater Elevation and Analytical Data <br /> UA <br /> ARCO Service Station#2093 <br /> 3425 Tracy Blvd,Tracy,California <br /> Floating <br /> Well Depth product Groundwater Groundwater Total <br /> Date Elevation to Water thiclmess Elevation Elevation Change TPH-G Benzene Toluene Ethylbenzene Xylenes MTBE DO <br /> Sampled (feet,MSL) (feet,TOC) in feet (feet,MSL) (feet) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mg/1) <br /> ATR-5 04/15/93 — — — - 810 1 5 <0 5 8 3 0 9 <br /> (cont) 080193 11 16 — 3757 -- 80 <0 5 <0 5 <0 5 <0 5 <br /> 10/27/93 11 11 — 3762 0 05 63 <0 5 <0 5 <0 5 <0 5 <br /> 02/18/94 1073 — 3800 038 160 3 5 1 4 - <br /> 05/20194 1082 — 3791 -009 600 <0 3 2 1 2 1 7 -- <br /> 10/07/94 11 14 — 3759 -0 32 660 <05 <05 <0 5 <0 5 <br /> 12/16/94 10 77 — 3796 037 410 6 5 <05 <0 5 <0 5 <br /> 02128/95 1080 — 37 93 -003 60 <05 0 6 <0 5 <0 5 — <br /> 04/26/95 1104 — 37 69 -024 83 4 5 <0 5 <05 <05 — — <br /> 07/27/95 1127 — 3746 -023 58 <0 5 <0 5 <05 12 — <br /> i 0126195 (c) 1051 — — -- -- — — -- <br /> 10/27/95 — — — - <520 <5 <0 5 <05 <05 - <br /> 02/12/96 960 — — -- 92 1 <0 5 <0 5 <0 5 - - <br /> 04/18/96 806 — — - 60 <0 5 <0 5 <0 5 <0 5 -- <br /> 07/18/96 1011 — -- - 280 48 <0 5 <05 <0 5 14 — <br /> 11l15196 -- -- — - - - - - - - <br /> 03/14/97 1094 — — <50 <0 5 <0 5 <0 5 <0 5 <2 5 015 <br /> 06/04/97 NP 1026 — — -- 97 27 <05 <0 5 <0 5 <2 5 017 <br /> 08/11/97 NP 1044 — — - 220 3 4 0 6 <0 5 <0 5 6 9 -- <br /> 11/17/97 NP 1050 — — 190 2 8 065 <0 5 <0 5 51 — <br /> 03/30/98 NP 9 81 88 <05 <05 <0 5 <0 5 6 2 21 <br /> 06125/98 NP 1011 — — <50 <05 <05 <0 5 <0 5 911 1 5 <br /> 09/11198 Welllnaccessable -- -- -- -- — — -- <br /> 12/15198 NP 1020 — -- - 134 <05 <05 <0 5 <0 5 8 98 1 7 <br /> 03/17/99 NP 9 81 — 38 92 -- 756 0 586 <05 0 876 102 <50 7 4 <br /> 05/14/99 NP 1034 — 3839 -053 <50 <05 <05 <0 5 <0 5 <5 8 5 <br /> 09/16/99 NP 1040 -- 38 33 -006 <50 <0 5 <05 e05 <0 5 512 2 2 <br /> 12/22/99 NP 1030 — 3843 010 <50 <0 5 <05 <0 5 <0 5 <2 50 635 <br /> 02/29100 NP 970 — 3903 060 <50 <0 5 <0 5 <0 5 <0 5 306 2 9 <br /> ATR-6 03/10189 4935 -- — — -- <200 <0 5 <0 5 <05 <0 5 -- — <br /> 06/21/89 1154 — 3781 -- <50 <0 3 <0 3 <03 0 3 — <br /> 09/18/89 1160 — 3775 -006 <50 0 5 1 3 0 3 3 8 - <br /> 12/27/89 1 l 57 — 3778 003 <50 <0 3 <0 3 <0 3 0 4 — <br /> W18190 1168 — 3767 -011 <50 19 2 4 0 6 5 - <br /> 14116190 — -- — — <50 <0 5 <0 5 <0 5 <0 5 - -- <br /> 10/19/90 1180 — 3755 — -- -- -- — <br />