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1 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-1 4/23/1987 5058 1249 3809 <100 <0 5 <0 5 <0 5 23 -- <br /> 12/22/1987 1263 3795 -014 -- -- 5 9 <0 5 0 9 <0 5 -- - <br /> 3/24/1988 1254 3804 009 <0 5 <0 5 <0 5 <0 5 <br /> 6/23/1988 1283 3775 -029 - <0 5 1 3 4 3 2 2 -- <br /> 9/29/1988 1301 3757 -018 -- <0 5 <0 5 <0 5 <0 5 - <br /> 2/22/1989 1246 3812 055 <100 1 4 <0 5 <0 5 1 8 - <br /> 6/21/1989 1237 38 21 009 - 520 360 0 8 21 36 - - <br /> 9/18/1989 1288 3770 -0 51 27,000 250 1,200 570 7,100 -- <br /> 1212711989 1268 3790 020 -- <50 3 4 <0 3 1 3 1 4 - - <br /> 4/18/1990 1284 3774 -016 - 13 21 16 16 16 - <br /> 10/16/1990 - -- <50 1 <0 5 2 2 <br /> 10/19/1990 1310 3748 -- -- -- -- -- - <br /> 1/10/1991 1278 3780 032 -- <50 2 4 <0 5 5 7 2 3 -- <br /> 4/10/1991 1262 3806 026 73 1 3 <0 5 4 8 <0 5 -- <br /> 7/10/1991 1295 3763 -043 - 90 2 <0 5 4 7 17 -- <br /> 9/24/1991 1330 3728 -0 35 <50 <0 5 <0 5 <0 5 <0 5 - <br /> 1/23/1992 1277 37 81 0 53 <50 <0 5 <0 5 <0 5 <0 5 - <br /> 4/20/1992 1268 3800 019 - <50 <0 5 <0 5 <0 5 <0 5 -- <br /> 7/8/1992 1290 3768 -0 32 <50 <0 5 <0 5 0 6 <0 5 - <br /> i 017/1992 1309 3749 -019 <50 <0 5 <0 5 <0 5 <0 5 - <br /> 1118/93 <br /> 4/14/1993 1231 3827 - <50 <0 5 <0 5 15 <0 5 - <br /> 8/30/1993 1318 3740 087 <50 <0 5 <0 5 <0 5 <0 5 - <br /> 10/27/1993 1313 3745 005 <60 <0 5 <0 5 <0 5 <0 5 <br /> 2/18/1994 1265 3793 048 17 0 6 1 1 0 8 <br /> 5/20/1994 1271 3787 -006 27 06 0 3 14 <0 5 -- <br /> 10/7/1994 1314 3744 -043 <50 <0 5 <0 5 <0 5 <0 5 - <br /> 12/16/1994 1274 3784 040 - <50 <0 5 <0 5 <0 5 <0 5 - <br /> 2/28/1995 1265 3793 009 -- <50 <0 5 <0 5 1 <0 5 <br /> 4/26/1995 1290 37 68 -025 <50 <0 5 <0 5 <0 5 <0 5 <br /> 7/27/1995 13 22 3736 -032 -- -- - - <br /> 10/26/1995 13 40 3718 -018 - -- - -- <br /> 10/27/1995 -- - - <60 <0 5 <0 5 <0 5 <0 5 - <br /> 2/12/1996 1230 3828 - -- 120 <0 5 <0 5 2 2 <0 5 <br /> 4/18/1996 1290 3768 -0 60 -- -- -- - - -- <br /> 7/18/1996 1328 3730 0 38 <50 <0 5 <0 5 <0 5 <0 5 <5 <br /> 11/15/1996 1374 3684 046 - -- -- -- -- -- <br /> 1 <br /> K MprocessWS SP ARCQ5A20931QuaderYd QTR 0352093 GW MR1Q03 <br />