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• 0 17 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) (ppb) (mg1L) <br /> ATR-i 1 12/15/1998 919 3765 021 - -- -- -- -- 1 1 <br /> (cont) 3/17/1999 P 896 3788 023 <50 <0 5 0 821 <0 5 <0 5 <5 0 3 7 <br /> 5/14/1999 920 3887 0 99 -- -- -- -- -- 280 <br /> 9/16/1999 P 952 3855 -0 32 <50 <0 5 <0 5 <0 5 <0 5 <5 0 3 4 <br /> 12/22/1999 9 32 3752 -103 - - - - -- 044 <br /> 2/29/2000 P 860 3824 072 - 114 <0 5 0 678 <0 5 1 63 <2 5 3 2 <br /> 61712000 NP 935 3749 075 - -- -- -- -- -- -- - <br /> 9/25/2000 NP 1021 3663 086 <50 <0 5 <0 5 <0 6 <0 5 893 0 5 <br /> 12/21/2000 915 3769 106 - -- - -- -- 4 5 <br /> 3/27/2001 P 906 3776 009 - <50 0 <0 500 <0 500 <0 500 <0 500 <2 00' 3 7 <br /> 6/20/2001 925 3759 -019 -- -- -- -- -- - <br /> 9/12/2001 P 1031 3653 -106 - <50 <0 50 <0 50 <0 50 <0 50 <2 5 1 5 <br /> 12/19/2001 914 3770 1 17 -- -- -- - <br /> 3/14/2002 P 9 18 3766 -004 - <50 <0 50 <0 50 <0 50 <0 50 <2 5 1 60 <br /> 6/2812002 — _ -- .. .- .- _ -- -- .- <br /> ATFL-12 10/16/1990 4708 - - <50 <0 5 <0 5 <0 5 <0 5 <br /> 10/19/1990 933 3775 -- - -- -- -- -- -- <br /> 1/10/1991 916 37 92 017 <50 <0 5 <0 5 <0 5 <0 5 - <br /> 4/10/1991 898 3810 018 <50 <0 5 <0 5 <0 5 <0 5 <br /> 7/12/1991 928 3780 -030 <50 <0 5 <0 5 <0 5 <0 5 - - <br /> 9/24/1991 9S2 3756 -024 -- - -- -- - <br /> 9/25/1991 -- -- -- <50 <0 5 <0 5 <0 5 <0 5 - -- <br /> 1/2311992 906 3802 -- -- <50 <0 5 <0 5 <0 5 <0 5 - <br /> 4/20/1992 900 3808 006 -- -- -- -- -- -- <br /> 4/21/1992 -- - -- <50 <0 5 <0 5 <0 S <0 5 -- <br /> 7/8/1992 9 21 3787 -- - <50 <0 5 <0 5 <0 5 <0 5 - - <br /> 10/7/1992 932 3776 0 1 t <50 <0 5 <0 5 <0 5 <0 5 - -- <br /> 1/18/1993 832 3876 100 <50 <0 5 <0 5 <0 5 <0 5 <br /> 4/14/1993 879 38 29 -047 <50 <0 5 <0 5 <0 5 <0 5 - -- <br /> 8/31/1993 939 3769 -060 <50 <0 5 <0 5 <0 5 <0 5 - <br /> 10/27/1993 936 3772 003 <50 <0 5 <0 5 <0 5 <0 5 -- -- <br /> 2/18/1994 902 3806 034 <10 0 4 0 5 <0 3 <0 5 -- <br /> 5l2011994 906 3802 -004 -- <10 <0 3 <0 3 <0 3 <0 5 -- - <br /> 1/21994 - -- -- <br /> 12/16/1994 -- - -- -- <br /> 2/28/1995 <br /> K U5 BP AAC010209310uarterVQ QTR 021Teble 1_2_3)da <br />