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• fg,7 of 21 <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Seance 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) MtBE DO <br /> Number Sampled (ft,MSL) (ft,TOC) (ft,MSL) Change(ft) (ft) (ug/L) (ug/L) (ug/L) (ug/L) (ugIQ (ug/L) (mg/L) <br /> ATR-4 11/15/1996 1151 -099 440 <0 5 <0 5 0 8 2 2 140 - <br /> (cont) 3/14/1997 11 57 -006 150 16 <0 5 <0 5 <0 5 870 007 <br /> 6/4/1997 NP 1093 0 64 420 8 7 1 4 12 1 3 5 4 008 <br /> 8/11/1997 NP 1055 0 38 320 2 4 1 1 <0 5 57 6 3 -- <br /> 11/17/1997 NP 1120 -0 65 420 3,3 14 <0 5 0 76 4 8 -- <br /> 3/30/1998 NP 1038 0 82 -- <50 <0 5 <0 5 <0 5 <0 5 <5 0 1 1 <br /> 6/25/1998 NP 1040 -002 658 <0 5 <0 5 <0 5 <0 6 <5 0 1 <br /> 9/11/1998 NP 11 06 - -0 66 <50 <0 5 <0 5 <0 5 <0 5 <2 5 084 <br /> 12/15/1998 NP 1075 0 31 -- <50 <0 5 <0 5 <0 5 <0 5 <5 0 1 1 <br /> 3/17/1999 NP 1063 022 <50 <0 5 <0 5 <0 5 <0 5 <5 0 6 7 <br /> 5/14/1999 NP 1097 044 - <50 0 591 <0 5 <0 5 <0 5 8,720 2 0 <br /> 9116/1999 NP 10 93 004 <50 <0 5 <0 5 <0 5 <0 6 <5 0 6 8 <br /> 12/22/1999 NP 1089 004 <50 <0 5 <0 5 <0 5 <0 5 857 1 56 <br /> 2/29/2000 NP 1026 - 063 <60 <0 5 <0 5 <0 5 <0 5 <2 5 31 <br /> 6/7/2000 NP 1106 - 0 80 <50 <0 5 <0 5 <0 5 <0 5 842 -- <br /> 9/25/2000 NP 1124 - 0 18 <50 <0 5 <0 5 <0 5 <0 5 28 0 070 <br /> 12129/2000 P 1081 - 043 <50 0 <0 500 <0 500 <0 500 <0 500 636' 4 5 <br /> 3127/2001 P 1064 - 017 <50 0 <0 500 <0 500 <0 500 <0 500 <2 00' 3 1 <br /> 6/20/2001 P 1084 -020 <50 <0 50 <0 50 <0 50 <0 50 <2 0' - <br /> 9/12/2001 P 1094 -010 <50 <0 50 <0 50 <0 50 <0 50 <2 5 2 4 <br /> 12/19/2001 P 1078 - 016 <50 <0 50 <0 50 <0 50 <0 50 <2 0` 159 <br /> 3114/2002 P 1078 - 000 <50 <0 50 <0 50 <0 50 <0 50 710` 129 <br /> 6/28/2002 P 1078 000 <60 <0 5 <0 5 <0 5 <0 5 <0 5" 3 5 <br /> 9/11/2002 P 1092 014 -- <50 <0 5 <0 5 <0 5 <0 5 <0 5' 3 3 <br /> 12/17/2002 Well inaccessible <br /> 313112003" P 1072 -- <50 <0 5 <0 5 <0 5 <0 5 <0 5 3 9 <br /> ATR-5 3/10/1989 4873 -- -- 6,600 693 <5 0 327 7 <br /> 6/29/1989 1052 3821 2,200 490 2 4 280 1 3 - <br /> 9/18/1989 1098 3775 046 1 000 68 1 1 63 5 8 <br /> 12/27/1989 1076 37 97 022 2,200 94 2 150 <1 <br /> 4/18/1990 1090 3783 -014 1,900 120 26 6 8 140 - <br /> 10/16/1990 - -- 1,000 18 47 79 16 <br /> 10/19/1990 11 10 3763 -- -- -- - -- <br /> 1/10/1991 1084 37 89 0 26 350 7 1 12 16 2 6 -- <br /> 4/10/1991 1067 3806 0 17 370 4 6 <0 5 7 <0 5 <br /> 7110/1991 1102 3771 -035 1,200 9 5 <0 5 18 1 5 <br /> K 1Wprocess\J5 6P ARC0\02093\Quaderi I QTR 0312093 OWMR1003 <br />