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• To Pao of 17 <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 Elevation to Water thickness 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 /> 08/30/93 1117 — 37 51 -047 <50 <0 5 <0 5 <0 5 <0 5 - - <br /> 10127/93 1123 — 3745 -006 <50 <0 5 <0 5 <0 5 0 7 - <br /> 02/17/94 1089 — 3779 0 34 -- — -- -- -- <br /> 02/1 a194 <br /> -02/18/94 — _ — -- <10 <0 3 0 4 <0 3 <0 5 - - <br /> 05/20/94 1097 -- 3771 -- <10 <0 3 <0 3 <0 3 <0 5 -- — <br /> 10/07/94 11 19 — 3749 -022 <50 <0 5 <0 5 <0 5 <0 5 - <br /> 12/16/94 1091 3777 028 <50 <0 5 <0 5 <0 5 <0 5 -- - <br /> 02/28/95 1093 — 3775 -002 <50 <0 5 <0 5 <0 5 <0 5 - <br /> 04/25/95 1146 -- 3722 -053 <50 <0 5 <0 5 <0 5 <0 5 -- <br /> 07/27/95 1173 — 3695 -027 — -- -- -- -- - - <br /> 10/26/95 1180 -- 3688 -007 <50 <0 5 <0 5 <0 5 <0 5 — - <br /> 02/12/96 1090 -- 3778 090 <50 <0 5 <0 5 <0 5 <0 5 -- <br /> 04/18/96 11 30 — 3738 -040 -- -- -- -- -- <br /> 07/18196 11 68 — 3700 -038 <50 <0 5 <0 5 <0 5 <0 5 <5 - <br /> 11/15/96 1223 — 3645 -055 -- — -- -- -- <br /> 03/14/97 NP 1223 -- 3645 000 <50 <0 5 <0 5 <0 5 <0 5 -- 020 <br /> 06/04/97 1152 — 3716 0 71 -- -- — -- -- -- 040 <br /> 08/11/97 NP 11 86 — 3682 -034 <50 <0 5 <0 5 <0 5 <0 5 <2 5 -- <br /> 11/17/97 <br /> - <br /> 11/17/97 11 72 — 3696 014 -- -- -- -- -- -- -- <br /> 03/30/98 NP 11 10 — 3758 0 62 <50 <0 5 <0 5 <0 5 <0 5 <5 0/<2 0" 240 <br /> 06/25/98 1151 — 3717 -041 — -- -- -- -- -- -- <br /> 09/11/98 NP 1165 -- 3703 -014 <50 <0 5 <0 5 <0 5 <0 5 <2 5 1 81 <br /> 12115/98 1153 — 3715 012 -- -- — -- -- — 170 <br /> 03/17/99 NP 1125 — 3743 028 <50 <0 5 <0 5 <0 5 <0 5 <5 0 1 60 <br /> 05/14/99 NP 1150 — 3718 025 -- -- -- -- -- -- 240 <br /> 09/16/99 NP 1174 -- 3694 -024 <50 <0 5 <0 5 <0 5 <0 5 <50 430 <br /> 12/22/99 NP 1161 — 3707 0 13 -- -- — -- -- — 199 <br /> 02/29/00 NP 1104 — 37 64 057 <50 <0 5 <0 5 <0 5 <0 5 <2 5 430 <br /> 06/07/00 NP Welllnaccessable -- -- -- -- -- -- -- <br />