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Table 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station No 2093 <br /> 3425 Tracy Boulevard Tracy Caldomia <br /> Well Depth Groundwater Groundwater Product Ethyl- Xylenes <br /> Well Date Elevation to Water Elevation Elevation Thickness TPHg Benzene Toluene benzene (total) MISE DO <br /> Number Sampled (ft,MSL) (ft,TOG) (ft,MSL) Change(ft) (ft) (yg/L) 4pg/1-) (a9/L) ) 409/1-) (0g/L) (mg/L?_ <br /> ATR 8 8/25/1991 4598 — — — 2 700 110 <0 5 130 98 — <br /> 9/25/1991 8 85 3713 — 1 400 95 <0 5 51 97 —1/2311992 8 29 3769 056 <50 25 <0 5 <0 5 <0 5 — — <br /> 4/20/1992 ell 3787 0 i 8 — — — _ - <br /> 4/21/1992 — — — — 140 14 09 14 9 3 — <br /> 7/8/1992 8 48 3750 — — 87 40 <0 5 9 2 08 <br /> 10!7/1992 8 69 3729 0 21 — — — — -- — — <br /> 10/8/1992 — -- — 140 78 32 11 8 6 —1118/1993 709 3889 — — — - — — — — <br /> 1/19/1993 » — — — 980 140 1 7 11 34 <br /> 4/14/1993 7 80 3818 — — - -- — — - <br /> 4/15/1993 — -- — — 110 42 <0 5 46 4 9 — — <br /> 8/31/1993 981 3617 — — 700 150 15 41 71 — — <br /> 10/27/1993 8 68 37 30 1 13 -- 52 000 620 2 100 2 800 8 700 <br /> 2/17/944 825 3784 054 014 — — - — — — — <br /> 5/20/94A 855 3754 -030 014 — — — — — — — <br /> 10/7/94A 8 70 3739 015 014 -- — — — <br /> 12/16/1994 8 21 3777 038 sheen — — — — — — <br /> 2/28/954 8 45 37 55 0 22 002 — — — — — — — <br /> 4/25/95A 8 51 3786 031 050 — — — — — <br /> 7/27/95A 985 3622 1 63 012 <br /> 10/26/95A 9 28 3672 0 50 003 — — — — — — <br /> 2/12/96A 7 87 3813 140 002 — — — <br /> 4/18/964 845 3755 058 002 - - — -- — » <br /> 7/18/1996 8 95 37 03 -0 52 — 88 000 72 220 620 2 500 <5D0 <br /> 11/15/1996 9 40 3658 -045 — 52 000 110 130 240 1 300 <20D <br /> 3/14/1997 924 36 74 016 — 350 4 2 <0 5 1 6 26 <2 5 01 <br /> 6/4/1997 NP 8 69 3729 0 55 — 1200 42 5 2 82 150 <2 5 003 <br /> 8/11/1997 NP 910 3688 041 — 7 80D 280 75 140 710 125 — <br /> 11/17/1997 NP — — — — 4,200 57 <0 5 <0 5 250 <2 5 - <br /> 3/30/1998 NP 802 3796 320 1 7 <0 5 <0 5 2 4 <5 0112 0 08 <br /> 6/25/1998 NP 9 69 3629 -167 — 876 300 1 90 871 176 <60 1 4 <br /> 9/11/1998 Well paved over <br /> 12/15/1998 NP 4611 8 Be 3725 - 456 102 0 690 6 12 809 <50 07 <br /> 3/17/1999 NP 8 55 3756 -031 130 212 0 528 212 2 71 <5 0 25 <br /> 5/14/1999 NP 8 81 37 30 026 — 155 1 79 <0 5 241 2 00 <50 42 <br /> 9/16/1999 NP 917 3694 0 36 747 278 1 42 988 840 <60 1 8 <br /> 12/22/1999 NP 799 3812 118 — 648 <0 5 0 586 585 536 12 50 031 <br /> 2/29/2000 NP 818 3793 -019 — 142 1 60 <0 5 239 1 36 <2 50 62 <br /> 6/7)1000 NP 902 3709 -0 84 — 576 4 82 <0 500 843 <2 50 <125 — <br /> 9/25/2000 NP 9 87 3624 -085 — 2,720 563 11 4 331 473 <50 0 — <br /> 12/29/2000 P 8 38 3773 1 49 — 2 350 <5 00 <5 00 191 <5 00 <2 00' 51 <br /> 3/27/2001 P 966 3645 -1 28 <50 0 <0 500 <0 500 <0 500 <0 500 <2 00' 27 <br /> 6/20/2001 P 899 3712 067 — 150 <1 0 <1 O 1 5 2 9 <2 0' -- <br /> 9/12/2001 P 911 3700 -012 810 1 3 37 4 4 8 4 <2 5 1 7 <br /> 12/19/2001 P 8 78 3733 O 33 380' 081 <0 50 2 5 1 5 21' 048 <br /> 3/14/2002 P 880 37 31 -002 — 170 <0 So <0 50 071 <0 50 <0 50' 0 72 <br /> 6/28/2002 P 910 3701 -0 30 260 O 79 0 56 2 7 <0 5 0 82' 1 O <br /> 9/11/2002 P 914 3697 -0 04 150 3 0 07 4 2 1 4 0 73' 23 <br /> 12/17/2002 P 8 33 3778 081 — 420 12 0 <2 0 6 4 76 1 T 1 4 <br /> 3131/2003' P 8 75 37 36 -042 — 260 <0 50 <0 5 056 <0 50 1 1' 08 <br /> 6/9/2003 P 8 81 3730 -006 220 <0 50 0 61 J 1 9 <0 50 <0 50' 43 <br /> 9/18/2003 P 892 3719 -011 — 230 0 58 <0 5 05 <0 5 23' 1 6 <br /> 12125/2007 P 8 78 3733 014 — 140 <05 <0 5 <0 5 <0 5 3 0' 1 9 <br /> 9 lwptoc US BP ancao2O a�0tmtarV4 QTR Oa2093 GvrtW aqua Page 8 of 14 <br />