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• Pa 1 i of 21 <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station#2093 <br /> 3425 Tracy Blvd,Tracy,CA <br /> Well Depth Groundwater Groundwater Product Ethyl Xylenes <br /> Well Date Elevation to Water Elevation Elevation Thickness TPHg Benzene Toluene benzene (total) ME DO <br /> Number Sampled (ft,MSL) (ft TOC) (ft,MSL) Change(ft) (ft) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (mg/L) <br /> ATR-7 6/21/1989 1190 3776 <50 1 <0 3 0 6 0 5 <br /> (cont) 9/18/1989 1198 3767 -008 - <50 0 4 <0 3 <0 3 1 1 - - <br /> 12/27/1989 1194 3771 004 90 10 0 9 2 7 7 9 - <br /> 4/18/1990 1201 3764 -007 <50 6 1 2 6 2 1 5 8 - <br /> 10/16/1990 - - -- - <50 <0 5 <0 5 <0 5 <0 5 <br /> 10/19/1990 1220 3745 <br /> 1/10/1991 - <50 6 <0 5 1 8 4 1 - <br /> 4/10/199, -- - - -- - <br /> 7/10/1991 -- - -_ <br /> 9/2411991 1234 3731 <br /> 9/25/1991 - - <50 1 3 <0 5 <0 5 <0 5 <br /> 1/23/1992 - - <br /> 4/20/1992 - -- - <br /> 7/8/1992 - - <br /> 10/7/1992 1221 3744 -- - - <br /> 10/8/1992 <50 <0 5 <0 5 <0 5 <0 5 <br /> 1/18/1993 1133 38 32 - - -- - - -- - <br /> 1/19/1993 - <50 1 <0 5 0 6 <0 5 -- <br /> 4/14/1993 1176 3790 - -- -- - - - - <br /> 4/15/1993 -- - <50 2 9 <0 5 <0 5 <0 5 - - <br /> 8/31/1993 1224 3741 - -- <50 <0 5 <0 5 <0 5 <0 5 - -- <br /> 10/27/1993 1223 3742 0 01 - <50 <0 5 <0 5 <0 5 13 <br /> 2/18/1994 1193 3772 030 <10 <0 3 <0 3 <0 3 <0 5 - <br /> 5/20/1994 1200 3765 -0 07 <10 <0 3 <0 3 <0 3 <0 5 <br /> 10/7/1994 1223 3742 -0 23 <50 <0 5 <0 5 <0 5 <0 5 <br /> 12/16/1994 1194 3771 029 <50 <0 5 <0 5 <0 5 <0 5 <br /> 2128(1 995 1200 3766 -006 <50 <0 5 <0 5 <0 5 <0 5 - <br /> 4/25/1995 1241 3724 -0 41 <50 <0 5 <0 5 <0 5 <0 5 - <br /> 7/27/1995 1261 3704 -020 <50 <0 5 <0 5 <0 5 <0 5 <br /> 10/26/1995 1267 3698 -006 - <50 <0 5 <0 5 <0 5 <0 5 -- - <br /> 2/12/1996 1195 3770 072 <50 <0 5 <0 5 <0 5 <0 5 - -- <br /> 4/18/1996 1235 3730 040 <50 <0 5 <0 5 <0 5 <0 5 - - <br /> 7/18/1996 1245 3720 010 <50 <0 5 <0 5 <0 5 <0 5 28 <br /> 11/15/1996 13 11 3654 066 <50 <0 5 <0 5 <0 5 <0 5 120 - <br /> 3/14/1997 1320 3645 009 <50 <0 5 <0 5 <0 5 <0 5 6 3 010 <br /> 6/4/1997 NP 1244 3721 076 <50 <0 5 <0 5 <0 5 <05 <2 5 013 <br /> 8/11/1997 NP 1272 3693 -028 - <50 <0 5 <0 5 <05 <0 5 22 -- <br /> K 1WprocesaU6 9P ARCDVD20931QuarterlyM CITH 0312093 OWMR1003 <br />