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0 <br /> e2of16 <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station#2093 <br /> 3425 Tracy Blvd Tracy CA <br /> Well Copih Groundwater Groundwater Product Ethyl Xylenes <br /> Well Date Elevation to Water Elevatfon Elevation Thickness TPI-Ig Benzene Toluene benzene (lotal) MtBE DO <br /> Number Sampfed (11 MSL) it TOC) (1t MSL) Change(ft) (ft) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mglL) <br /> ATR 1 12/22/1999 1319 3739 017 — 1 77 <br /> (cont) 2/2912000 NP 1245 38 13 074 <50 <0 5 <0 5 <0 5 <0 5 <2 5 4 90 <br /> 6/7/2000 NP 1318 37 40 073 <br /> 9/25/2000 NP 13 39 3719 0 21 <50 <0 5 <0 5 <0 5 2 55 <2 5 0 30 <br /> 12129!2000 1299 37 59 040 — 5 3 <br /> 3/27/2001 Well Inaccessible ~ <br /> 6/20/2001 1301 3757 0 02 <br /> 9/12/2001 Well Inaccessible « <br /> 12119/2001 W ell Inaccessible <br /> 3114!2002 Well inaccessible <br /> 6128!2002 Well Inaccessible <br /> 9/11/2002 Well Inaccessible <br /> ATR 2 4123/1987 4922 11 28 37 94 — <100 <05 0 6 <0 5 <0 5 <br /> 12122/1987 11 40 3782 012 <0 5 <0 5 <0 5 <0 5 — <br /> 3/24/1988 11 35 3787 005 <0 5 <0 5 <0 5 <0 5 <br /> 6/23/1988 11 55 3767 -020 » <0 5 <0 5 <0 5 <0 5 <br /> 9/29/1988 11 71 37 51 016 — <0 5 <0 5 <0 5 <0 5 _ <br /> 2/22/1989 11 35 3787 0 36 370 1 B 0 7 0 6 3 4 _ <br /> 6/21/1989 11 45 3777 010 <50 1 9 <0 3 0 4 <0 3 _ <br /> 9/18/1989 11 65 37 57 020 9 1 9 0 9 1 1 8 2 <br /> 12/27/1989 11 50 37 72 015 <50 3 5 <0 3 1 1 0 3 <br /> 4/18/1990 11 64 37 58 014 50 2 9 <0 3 <0 3 <0 3 <br /> 10/16/1990 It 81 3741 017 <50 <0 5 <0 5 <0 5 <0 5 <br /> t 0/19/1990 11 81 37 41 000 <br /> 1/10/1991 11 68 37 64 023 <50 0 8 <0 6 <0 5 <0 5 — <br /> 4110l1991 11 35 3787 023 <50 <0 5 <0 5 <0 5 <0 5 <br /> 7/10/1991 11 74 3748 -0 39 <50 <0 5 <0 5 <0 5 <0 5 _ <br /> 9/24/1991 12 02 37 20 028 <50 <0 5 <0 5 <0 5 <0 5 — <br /> 1l2311992 11 60 37 62 0 42 <50 <0 5 <0 5 <0 5 <0 5 <br /> 4/20/1992 11 53 3769 007 <50 <0 5 <0 5 <0 5 <0 5 <br /> 7/8/1992 11 76 3747 022 <50 2 8 <0 5 <0 5 <0 5 <br /> 10/7/1992 It 83 3739 008 59 5 7 <0 5 <0 5 <0 5 <br /> 1118193 _ <br /> 411419 993 11 29 3793 55 3 8 0 7 0 8 1 9 w <br /> 8/30/1993 11 96 3726 0 67 <50 <0 5 <0 5 <0 5 <0 5 — <br /> 10/27/1993 11 95 3727 0 01 <50 <0 5 <0 5 <0 5 <0 5 _ <br /> 211 B11994 11 54 3768 0 41 <10 0 7 0 9 <0 3 0 7 — — <br /> 6/20/1994 11 fit 3761 007 <10 0 9 <0 3 <0 3 <0 5 <br /> 1017/1994 11 93 3729 0 32 <50 <0 5 <0 5 <0 5 <0 5 <br /> 12/16/1994 11 56 37 66 0 37 — <50 <0 5 <0 5 <0 5 <0 5 <br /> 2128!1995 11 60 37 62 004 <50 <0 5 <0 5 <0 5 <0 5 <br /> 4/25/1995 11 95 3727 0 35 <50 <0 5 <0 5 <0 5 <0 5 <br /> 7/27/1995 12 91 3631 096 — <50 <0 5 <0 5 <0 5 <0 5 <br /> 10/26/1995 1226 3696 0 65 <50 <0 5 c0 5 <0 5 <Q 5 <br /> 2/12/1996 11 40 3782 0 86 <50 <0 5 <0 5 <0 5 <0 5 <br /> 4/18/1996 11 90 3732 -0 50 <250 <2 5 <2 5 <2 6 <2 5 <br /> 7118/1996 1210 37 12 020 -- <50 <0 5 <0 5 <0 5 <0 5 500 <br /> K W 8P ARQ017zo434oinna"QTR CZT"1 2_3#s <br /> - - 1 <br />