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Page 7 o1 16 <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station!12093 <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 (tolai) MTBE DO <br /> Number Sampled (it MSL) (k TOC) (ft MSL) Change(ft) (it) (PPP) (ppb) (ppb) (ppb) (ppb) (ppb) mg/L) <br /> ATR 5 2/29/2000 NP 9 70 0 60 <50 <0 5 <0 5 <0 5 <0 5 306 2 9 <br /> (cont) 6/7/2000 Well inaccessible <br /> 9/25/2000 NP 1057 -- <50 <0 5 <0 5 <0 5 <0 5 <2 5o 040 <br /> 12!2912000 P 1019 038 136 128 <0 500 <0 500 0 656 <2 00' 5 1 <br /> 3/27/2001 P 1004 015 806 <0 500 <0 500 <0 500 0 537 18 0' 3 5 <br /> 6/2012001 P 1023 019 150 1 7 <0 50 <0 50 0 67 220' <br /> 9/12/2001 P 1035 012 150 <0 50 <0 50 <0 50 <0 50 92 1 6 <br /> 12/19/2001 W ell Inaccessible <br /> 3/14/2002 Well inaccessible <br /> 6/28/2002 P 1038 67 <0 5 <0 5 <0 5 <0 5 83' 4 7 <br /> 911112002 P 4873 <br /> 1024 3849 014 — <50 <0 5 <0 5 <0 5 076 19' 37 <br /> ATR 6 3/10/1989 4935 <200 <0 5 <0 5 <0 5 <0 5 <br /> 6/21/1989 11 54 3781 <50 <0 3 <03 <0 3 0 3 <br /> 9/18/1969 11 60 3776 006 <50 0 5 1 3 0 3 3 8 <br /> 12/27/1989 11 57 3778 003 <br /> <50 <0 3 <0 3 <0$ 0 4 <br /> 4/18/1990 11 68 37 67 Oil <50 19 2 4 0 6 5 <br /> 10/16/1990 <50 <0 5 <0 5 <0 5 <0 5 <br /> 10/19/1990 11 60 3755 _ <br /> 1/10/1991 11 64 37 71 016 <50 <0 5 <0 5 <0 5 <0 5 <br /> 4/10/1991 11 52 3783 0 12 <50 <0 5 <0 5 <0 5 <0 5 _ <br /> 7/10/1991 11 76 $769 024 <50 <0 5 <0 5 <0 5 <0 5 <br /> 9/24/1991 11 95 3740 019 <50 <0 5 <0 5 <0 5 <0 5 <br /> 1/2311992 11 66 3769 0 29 <50 <0 5 <0 5 <0 5 <0 5 <br /> 4/2011992 11 56 3779 010 <br /> 4/21/1992 <50 <0 5 <0 5 <0 5 <0 5 <br /> 7/8/1992 11 72 3763 <50 <0 5 <0 5 <0 5 <0 5 <br /> 10/7/1992 11 82 3753 010 <50 <0 5 <0 5 <0 5 <0 5 _ ~ <br /> 1/18/1993 It 04 3831 078 <50 <0 5 <0 5 <0 5 <0 5 <br /> 4/14/1993 11 42 3793 0 38 310 7$ <0 5 <0 5 <0 5 <br /> 8/31/1993 _ <br /> 10/27/1993 11 84 37 51 -- <50 <0 5 <0 5 <0 5 <0 5 <br /> 2/17/1994 _ <br /> 5/20/1994 _ <br /> 10/7/1994 11 85 3750 <50 <0 5 <0 5 <0 5 <0 5 <br /> 12/16/1994 11 54 37 81 0 31 <50 <0 5 <0 5 <0 5 <0 5 <br /> 2/28/1995 11 65 37 70 Oil <50 <0 5 <0 5 <0 5 <0 5 <br /> 4/26/1995 <br /> 7/27/1995 <br /> 10/26/1995 12 18 3717 <50 <0 5 <0 5 CO 5 <0 5 <br /> 2/12/1996 11 57 3778 0 61 <50 <0 5 <0 5 <0 5 <0 5 ^ <br /> 4/18/1996 11 91 37 44 034 _ <br /> 7/16/1996 1201 3734 010 <50 <0 5 <0 5 <0 5 <0 5 10 <br /> 11/15/1996 1263 38 72 0 62 — <br /> 3/14/1997 _ <br /> 6/4/1997 12 01 3734 _ _ _ <br /> 8/11/1997 NP 1223 37 12 022 — 0 14 <br /> c50 <0 5 <0 5 <0 5 <0 5 56 <br /> 1111711997 1224 3711 0 01 <br /> K1,6 eP ARGQ4020035Qwt6rtA3 OTR 021T"1 2 3 oda <br />