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Tat P1001 18 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station#2093 <br /> 3425 Tracy Blvd,Tracy,California <br /> Floating <br /> Well Depth product Groundwater Groundwater Total <br /> Date Elevaton 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/1) <br /> 01/23/92 1160 - 3762 042 <50 <0 5 <0 5 <0 5 <0 5 - <br /> ATR 2 04/20/92 1153 -- 3769 007 <50 <0 5 <0 5 <0 5 <0 5 <br /> (cont) 07/08/92 1175 - 3747 -0 22 <50 2 8 <0 5 <0 5 <0 5 -- <br /> 10/07/92 11 83 -- 3739 -008 59 5 7 <0 5 <0 5 <0 5 <br /> 1/18/93 -- -- -- -- -- -- <br /> 04/14/93 1129 - 3793 -- 55 3 8 07 0 8 1 9 - <br /> 08/30/93 1196 -- 3726 -067 <50 <0 5 <0 5 <0 5 <0 5 <br /> 10/27/93 1195 - 3727 001 <50 <0 5 <0 5 <0 5 <0 5 -- <br /> 02/18/94 1154 -- 3768 041 <10 07 09 <0 3 07 -- <br /> 05/20/94 1161 -- 3761 -007 <10 09 <0 3 <0 3 <0 5 <br /> 10/07/94 1193 -- 3729 -032 <50 <0 5 <0 5 <0 5 <0 5 <br /> 12/16/94 1166 -- 3766 037 <50 <0 5 <0 5 <0 5 <0 6 <br /> 02/28/95 1160 -- 3762 -004 <50 <0 5 <0 5 <0 5 <0 5 -- <br /> 04/25/95 1196 -- 3727 -035 <50 <0 5 <0 5 <0 5 <0 5 <br /> 07/27/95 1291 -- 3631 -096 <50 <0 5 <0 5 <0 5 <0 5 <br /> 10/26/95 1226 -- 3696 065 <50 <0 5 <0 5 <0 5 <0 5 <br /> 02/12f96 1140 -- 3782 086 <50 <0 5 <0 5 <0 5 <0 5 <br /> 04/18/96 1190 -- 3732 -050 <250 <2 5 <2 5 <2 5 <2 5 -- <br /> 07/18/96 1210 -- 3712 -020 <50 <0 5 <0 5 <0 5 <0 5 500 <br /> 11/15/96 1270 -- 3652 -0 60 <50 <0 5 <0 5 <0 5 <0 5 750 <br /> 03/14/97 P 1270 -- 3662 000 <50 <0 5 <0 5 <0 5 <0 5 280 0 08 <br /> 06/04/97 NP 1202 -- 3720 068 <50 064 <0 5 <0 5 <0 5 480 006 <br /> 08/11/97 P 1233 - 3689 -031 <50 <0 5 <0 5 <0 5 <0 5 440 <br /> 11/17/97 P 1226 -- 3696 007 <50 <0 5 <0 5 <0 5 <0 5 98 <br /> 03/30/98 NP 1182 -- 3740 044 <50 <0 5 <0 5 <0 5 <0 5 18/20" 12 <br /> 06/25/98 NP 1206 -- 3717 -023 <50 <0 5 <0 5 <0 5 <0 5 109 16 <br /> 09/11/98 NP 1212 -- 3710 -007 <50 <0 5 <0 5 <0 5 <0 5 250 167 <br /> 12/15/98 NP 1201 -- 3721 Oil <50 <0 5 <0 5 <0 5 <0 5 <5 0 15 <br /> 03/17/99 NP 1165 -- 3757 036 <50 <0 5 <0 5 <0 5 <0 5 <5 0 23 <br /> 0$114/99 NP 1205 -- 3717 -040 <50 <0 5 <0 5 <0 5 <0 5 <5 0 190 <br /> 09/16/99 NP 1223 -- 3699 -018 <50 <0 5 <0 5 <0 5 <0 5 <5 0 37 <br /> 12/22/99 NP 1214 -- 3708 009 <50 <0 5 <0 5 <0 5 <0 5 <2 50 743 <br /> 02/29/00 NP 1150 -- 3772 064 <50 <0 5 <0 5 <0 5 <0 5 483 51 <br /> 06/07/00 NP 1211 3711 -061 <50 <0 5 <0 5 <0 5 <0 5 126 -- <br /> 09/25/00 NP 1211 — 3711 000 <50 <0 5 <0 5 <0 5 <0 5 141 0 30 <br />