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0 <br /> Page 6 of 20 <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 to Water Elevation Elevation Thickness TPHg Benzene Toluene benzene (total) MtBE DO <br /> Number Sampled (ft,MSL) (ft,TOC) (ft,MSL) Change(ft) (ft) (Ppb) (ppb) (ppb) (ppb) (ppb) ( b) (mg/L) <br /> ATR 4 4/10/1991 1099 3804 017 500 8 4 <0 5 <0 5 24 <br /> (cont) 7/10/1991 11 32 3771 -0 33 190 39 <0 5 3 7 3 <br /> 9/24/1991 1157 3746 025 70 22 <05 4 2 15 <br /> 1/23/1992 11 16 3787 0 41 1200 300 5 2 49 72 <br /> 4/20/1992 11 12 3791 004 -- -- -- -- -- -- <br /> 4/21/1992 <br /> - <br /> 4/21/1992 -- -- 560 150 <5 36 29 <br /> 7/8/1992 11 31 3772 -- 590 150 2 1 36 39 <br /> 10/7/1992 11 45 3758 014 - -- - -- -- <br /> 10/8/1992 -- -- 1,200 240 4 8 62 97 - <br /> 1/18/1993 1046 3858 - -- .- - - - ._ <br /> 1/19/1993 -- -- -- 1,200 240 5 5 44 90 -- <br /> 4/14/1993 1087 3816 - - - -- .- <br /> 4/15/1993 -- - 810 160 4 2 47 63 -- <br /> 8/31/1993 (a) 1098 -- -- 100 33 <0 5 6 13 <br /> 10/27/1993 1098 - 000 200 12 12 7 9 16 <br /> 2/18/1994 1031 -- 067 - 950 140 5 73 30 - <br /> 5/20/1994 1071 -040 8,100 590 59 190 220 <br /> 10/7/1994 1100 -- -029 1,100 30 1 16 7 3 -- <br /> 12/16/1994 1061 - 0 39 1,600 310 2 3 350 200 <br /> 2(28/1995 10 68 -- -007 4,600 180 <5 750 100 <br /> 4/26/1995 1094 026 1,100 19 <1 110 8 3 <br /> 7/27/1995 1111 - 017 1,700 12 <26 170 84 <br /> 10/26/1995 11 18 -- 007 -- -- -- -- <br /> 10/27/1995 -- -- -- 600 7 <1 30 2 -- -- <br /> 2/12/1996 10 43 -- -- 6,300 <0 5 <0 5 340 150 -- <br /> 4/18/1996 1077 -- -034 -- 770 <1 0 <1 0 41 19 -- <br /> 7/18/1996 1052 -- 025 - 2,600 12 <5 52 <5 560 -- <br /> 11/15/1996 1151 -- -099 440 <0 5 <0 5 0 8 2 2 140 - <br /> 3/14/1997 1157 -006 150 1 5 <0 5 <0 5 <0 5 870 007 <br /> 6/4/1997 NP 1093 -- 0 64 420 8 7 14 12 1 3 5 4 008 <br /> 8/11/1997 NP 1055 0 38 - 320 24 1 1 <0 5 57 6 3 -- <br /> 11/17/1997 NP 1120 -0 65 420 3,3 14 <0 5 076 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 - 65 8 <0 5 <0 5 <0 5 <0 5 <5 0 1 <br /> 9/11/1998 NP 1106 - -066 - <50 <0 5 <0 5 <0 5 <0 5 <2 5 0 84 <br /> 12/15/1998 NP 1075 031 -- <50 <0 5 <0 5 <0 5 <0 5 <5 0 1 1 <br /> 3/17/1999 NP 1053 -- 0 22 <50 <05 <0 5 <0 5 <0 5 <5 0 6 7 <br /> K V5 8P ARC010209TCftrtedN QTR 027able 1_2_3 As <br />