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Page 14 of 17 <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station#2093 <br /> 3425 Tracy Boulevard 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 (P MSL) (ft,TOC) (1t MSL) Change(ft) (fl) (ug/L) (ug/L) (ug1L) (ug/L) (ug/l-) (ug/L) mg/L) <br /> ATR 11 3/14/1997 NP 986 3698 0 09 <50 <0 5 <0 5 <0 5 <0 5 — 015 <br /> (coni} 6/411997 9 24 3760 0 62 006 <br /> 8111/1997 NP 9 63 3721 039 <50 <0 5 <0 5 <0 5 <0 5 <2 5 <br /> 11/17/1997 947 3737 016 — .- -- <br /> 3/30/1998 NP 8 66 3818 0 81 <50 <05 <0 5 <0 5 <0 5 <5 0 1 5 <br /> 6/25/1998 992 36 92 1 26 — — — <br /> 9/11/1998 P 9 40 3744 0 52 <50 <0 5 <0 5 <0 5 <0 5 <2 5 1 61 <br /> 12/15/1998 919 37 65 0 21 — — — 1 1 <br /> 3/17/1999 P 8 96 3788 0 2$ <50 <0 5 0 821 <0 5 <0 5 <5 0 3 7 <br /> 5/14/1999 920 38 87 0 99 — — — — 2 80 <br /> 9!1611999 P 952 3855 032 <50 <0 5 <0 5 <0 5 <0 5 <5 0 3 4 <br /> 12/22/1999 932 37 52 1 03 — — 0 44 <br /> 2/29/2000 P 8 60 38 24 0 72 114 <0 5 0 678 <0 5 1 63 <2 5 3 2 <br /> 6/7/2000 NP 935 3749 0 75 <br /> 9/25/2000 NP 1021 36 63 086 <50 <0 5 <0 5 <05 <0 5 893 0 5 <br /> 12/2112000 915 3769 1 06 -- 4 5 <br /> 3/27/2001 P 906 3778 009 <50 0 <0 500 <0 500 <0 500 <0 500 <2 00 3 7 <br /> 6/20/2001 9 25 3759 019 _ <br /> 9/12/2001 P 1031 3653 106 <50 <0 50 <0 50 <0 50 <0 50 <2 5 1 6 <br /> 12/19/2001 914 3770 1 17 — <br /> 3/14/2002 P 918 3766 0 04 <50 <0 50 <0 50 <0 50 <0 50 <2 5 1 60 <br /> 6/28/2002 <br /> 9/11/2002 P 942 3742 <50 <0 5 <0 5 <0 5 <0 5 <0 5 2 0 <br /> 12/17/2002 — — <br /> 3/31/2003 P 910 3774 <50 <0 5 <0 5 <0 5 <0 5 <0 5 1 9 <br /> 6/9/2003 908 3776 002 — Noll Sampled <br /> ATR 12 10/16/1990 4708 — — <50 <0 5 <0 5 <0 5 <05 <br /> 10/19/1990 9 33 3775 — — _ <br /> 1110/1991916 3792 017 <50 <05 <05 <0 5 <0 5 <br /> 4/10/1991 898 3810 016 <50 <0 5 <D5 <0 5 <05 <br /> 7/12/1991 928 37 80 030 <50 <0 5 <0 5 <0 5 <05 <br /> 9!2411991 952 3756 0 24 — <br /> 9/25/1991 — <50 <0 5 <0 5 <05 <105 <br /> 1/23/1992 9 06 3802 — <50 <0 5 <0 5 <05 <05 — <br /> 4/20/1992 900 3808 006 — -- — _ <br /> 4/21/1992 -- <50 <0 5 <0 5 <05 <0 5 — <br /> 7/8/1992 9 21 3787 — <50 <0 5 <0 5 <0 5 <0 5 — <br /> 10/7/1992 9 32 3776 Oil <50 e05 <05 <0 5 <0 5 — <br /> 1/18/1993 8 32 3876 1 00 <50 <05 <0 5 <0 5 <0 5 -_ <br /> 4/14/1993 879 3829 047 <50 <0 5 <05 <0 5 <0 5 -- <br /> 8/31l1993 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 <05 -- <br /> 5/20/1994 906 3802 0 04 -- <10 <0 3 <03 <0 3 <05 <br /> 10/7/1994 -- -- — — — <br /> 12I16/1994 <br /> 2128!1985 — -. - — <br /> x�Wprooe W5 aP ARM0M31Qw Wytx o-M anzoae QWMR ZQ03 <br />