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s � <br /> Tap Page-9 of 17 <br /> Groundwater Elevation and Analytical Data <br /> i <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 /> ATR-7 03/10/89 49 65 — — — — <200 <0 5 <0 5 <0 5 17 <br /> 06/21/89 11 90 — 3775 -- <50 1 <0 3 0 6 0 5 <br /> 09118/89 11 98 — 3767 -008 <50 0 4 <03 <0 3 1 1 <br /> 12/27/89 1194 — 3771 004 90 10 09 27 7 9 <br /> 04/18/90 12 01 — 37 64 -007 <50 61 2 6 21 5 8 <br /> 10/16190 — — -- -- <50 <0 5 <05 <0 5 <0 5 <br /> 10119!90 1220 — 3745 - -- -- -- — <br /> 01110/91 — — — - <50 6 <05 1 8 41 <br /> 04110/91 -- — — -- -- - <br /> 07/10/91 — — -- <br /> 09/24/91 1234 — 3731 -- -- -- -- -- <br /> 09/25/91 -- — -- - <50 1 3 <0 5 <D5 <0 5 <br /> 01/23/92 — — -- -- -- - -- <br /> 04/20/92 <br /> 07/08/92 — -- — — — — <br /> 10/07/92 1221 — 3744 -- -- - -- -- - - <br /> 10/08/92 — — — - <50 <0 5 <0 5 <05 <0 5 <br /> 01/18/93 1133 — 3832 -- -- -- -- -- -- — <br /> 01/19/93 <50 1 <0 5 0 6 <0 5 <br /> 04114/93 11 75 -- 3790 — — -- — — -- — <br /> 04115193 — — — <50 2 9 <0 5 <0 5 <0 5 — <br /> 08/31/93 1224 — 3741 -- <50 <05 <0 5 <0 5 <0 5 <br /> 10127/93 1223 — 3742 0 01 <50 <05 <0 5 <0 5 13 <br /> 02118/94 1193 — 3772 030 <10 <03 <0 3 <0 3 <0 5 - <br /> 05/20/94 1200 — 3765 -007 <10 <0 3 <0 3 <0 3 <0 5 <br /> 10107/94 1223 — 37 42 -023 <50 <0 5 <0 5 <0 5 <0 5 <br /> 12/16/94 1194 -- 3771 029 <50 <0 5 <05 <0 5 <0 5 - <br /> 02/28/95 1200 — 3765 -006 <50 <0 5 <0 5 <0 5 <0 5 - -- <br /> 04/25/95 1241 — 3724 -0 41 <50 <0 5 <0 5 <0 5 <0 5 <br /> 07/27/95 1261 — 37 04 -0 20 <50 <0 5 <0 5 <0 5 <05 - - <br /> 10l26/95 1267 — 36 98 -006 <50 <0 5 <05 <0 5 <0 5 <br /> 02/12196 11 95 — 3770 072 <50 <0 5 <05 <05 <0 5 - -- <br /> 04/18196 1235 — 3730 -040 <50 <0 5 <05 <05 <0 5 — — <br /> 07/18/96 1245 — 3720 -010 <50 <0 5 <05 <05 <0 5 28 <br /> 11/15/96 1311 — 3654 -066 <50 <05 <0 5 <0 5 <0 5 120 -- <br /> 03114l97 1320 — 3645 -009 <50 <05 <05 <0 5 <0 5 6 3 010 <br /> 06/04/97 NP 1244 — 3721 076 <50 <05 <05 <0 5 <0 5 <2 5 013 <br />