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image 12 of 16 <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 10 Water Elevation Elevation Thickness TPHg Benzene Toluene benzene (total) WEE DO <br /> Number Sam led (11 MSL) (fl TOC) (f1 MSL) Change(ft) (h) (ppb) (ppb) b) (ppb) (ppb) b (m IL <br /> ATR 10 7/8/1992 1017 3790 <50 <0 5 <0 5 <0 5 <0 5 <br /> (cont) 10/7/1992 1023 37 84 006 <50 <05 <0 5 <0 5 <0 5 H <br /> 1/18/1993 9 61 3846 0 62 <50 <0 5 <0 5 <0 5 <0 5 _ <br /> 4/14/1993 994 3813 -033 — <50 <0 5 <0 5 <0 5 <0 5 <br /> 8/30/1993 1023 37 84 029 -- <50 <0 5 <0 5 <0 5 <0 5 <br /> 10/27/1993 1024 37 83 0 01 <50 <0 5 <0 5 <0 5 <0 5 <br /> 2/18/1994 10 02 38 05 022 <10 <0 3 0 4 <0 3 <0 5 <br /> 5/20/1994 1009 3798 007 <10 <0 3 <0 3 <03 <05 <br /> 10/7/1994 1024 3783 015 <50 <0 5 <0 5 <0 5 <0 5 <br /> 12/16/1994 997 3810 027 <50 <0 5 <0 5 <0 5 <0 5 <br /> 2/28/1995 10 15 3792 016 <50 <0 5 <0 5 <0 5 <05 _ <br /> 4/25/1995 1027 3780 012 <50 <0 5 <0 5 <0 5 <0 5 — <br /> 7/27/1995 1038 3769 -011 <br /> 10/26/1995 1041 3766 003 _ <br /> 2/12/1996 1001 3806 040 <50 <0 5 <0 5 <0 5 <0 5 <br /> 4/18/1996 1023 3784 0 22 <br /> 7/16/1996 1040 37 67 0 17 <50 <0 5 <0 5 <0 5 <0 5 <5 <br /> 11/16/1996 1093 3714 0 53 _ <br /> 3/14/1997 _ <br /> 6/4/1997 <br /> 811 111997 NP 1056 3751 <50 <0 5 <0 5 <0 5 <0 5 <2 5 <br /> 11/17/1997 1047 3760 009 <br /> 3/30/1998 NP 1005 3802 0 42 — <50 <0 5 <0 5 <0 5 <0 5 <60 2 3 <br /> 6/25/1998 1025 3782 020 <br /> 9111/1998 NP 10 35 3772 010 <50 <0 5 <0 5 <0 5 <0 5 <2 5 1 43 <br /> 12115/1998 1021 3786 0 14 — — 0 6 <br /> 3/17/1999 NP 10 11 37 96 010 <50 <0 5 '05 <0 5 <0 5 <5 0 1 30 <br /> 5/14/1999 1031 3776 020 — _ _ 1 70 <br /> 911611999 NP <br /> 1044 3763 013 <50 <0 5 <0 5 <0 5 <0 5 <5 0 3 9 <br /> 12/22/1999 1035 3772 009 1 54 <br /> 2 12 912 0 0 0 NP 1003 3804 0 32 <50 <0 5 <0 5 <0 5 <0 5 <2 5 5 1 <br /> 6/7/2000 NP 1035 3772 0 32 _ <br /> 9/25/2000 NP 1045 37 62 -010 <50 <0 5 <0 5 <0 5 <0 5 <2 5 0 60 <br /> 12/21/2000 1030 3777 015 7 1 <br /> 3/27/2001 P 1022 3785 008 <50 0 <0 500 <0 500 <0 500 <0 500 <2 00' 2 3 <br /> 6/20/2001 1081 3726 0 59 <br /> 9112/2001 Well Inaccessibfe <br /> 12/19!2001 Well Inaccessible <br /> 3/14/2002 Well inaccessible <br /> 6/22/2002 <br /> 9/11/2002 Well inaccessible <br /> ATR 11 8125/1991 46 84 — <50 <0 5 <0 5 <0 5 <0 5 <br /> 9/24/1991 9 50 3734 <br /> 9/25/1991 <50 <0 5 <0 5 <0 5 <0 5 <br /> 1/2311992 895 3789 — — <50 <0 5 <0 5 <0 5 <0 5 <br /> 4/20/1992 8 78 3806 017 _ — <br /> 412111992 — <50 <0 5 <0 5 <0 5 <0 5 _ <br /> K VA OP ARCQ%0249310vy1pry13 oTR QZT"1_2_3* <br />