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i 0 <br /> Onagofl(3 <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 (it MSL) {fl TOC) {fl MSL) Change(it) (it) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (m /L <br /> ATR 6 3/30/1998 NP 11 69 3766 0 55 <50 <0 5 <0 5 <0 5 <0 5 41 1 9 <br /> (cont) 6/25/1998 11 97 37 38 028 — _ <br /> 9/11/1998 NP 1208 3727 Oil <50 <0 5 <0 5 <0 5 <0 5 c5 0 1 27 <br /> 12/15/1998 11 95 3740 0 13 — — 0 9 <br /> 3/17/1999 NP 11 86 3749 0 09 <50 <0 5 <0 5 <0 5 <0 5 <5 0 1 9 <br /> 5/14/1999 12 01 37 34 015 — — — 2 4 <br /> 9/16/1999 NP 1217 3718 016 <50 <0 5 <0 5 <0 5 <0 5 <5 0 5 3 <br /> 12/22/1999 1206 3729 Oil — 2 2 <br /> 2/2912000 NP 11 65 37 70 0 41 <50 <0 5 <0 5 <0 5 <0 5 10 7 5 0 <br /> 8/7/2000 NP 12 10 3725 045 — — — <br /> 9/25/2000 NP 1222 3713 0 12 <50 <0 5 <0 5 <0 5 <05 <2 50 070 <br /> 12/29/2000 1200 3735 022 51 <br /> 312712001 P 11 93 3742 007 <50 0 <0 500 <0 500 c0 500 <0 500 52 1* 4 1 <br /> 6/20/2001 1204 3731 0 11 <br /> 9/12/2001 P 1203 3732 0 01 <50 <0 50 <0 50 <0 50 <0 50 12 18 <br /> 12/19/2001 11 95 3740 006 <br /> 3/14/2002 P 11 97 3738 -0 02 <50 <0 50 <0 50 <0 50 <0 50 1 8* 086 <br /> 6/27/2002 <br /> 911112002 P 12 37 35 — — <50 <0 5 <0 5 <0 5 <0 5 0 68* 1 4 <br /> ATR 7 3/10/1989 4965 — — <200 <0 5 <0 5 <0 5 1 7 — <br /> 6/21/1989 11 90 3775 <50 1 <0 3 0 6 0 5 <br /> 9/18/1989 11 98 3767 008 -- <50 0 4 <0 3 <0 3 1 1 <br /> 12/27/1 969 11 94 3771 0 04 90 10 0 9 2 7 7 9 <br /> 4/18/1990 1201 37 64 007 60 61 2 6 2 1 5 8 <br /> 10116/1990 <50 <0 5 <0 5 <0 5 <0 5 <br /> 10/19/1990 12 20 3745 — _ <br /> 1/1011991 <50 6 <0 5 1 8 4 1 <br /> 411011991 <br /> 7/10/1991 — <br /> 9/24/1991 1234 37 31 _ — <br /> 9/25/1991 -- — — <50 1 3 <0 5 <0 5 <0 5 — <br /> 1/23l1992 <br /> 4120/1992 <br /> 701992 — — <br /> 10/7/1992 12 21 3744 <br /> 10/811992 <50 <0 5 <0 5 <0 5 <0 5 <br /> 1/18/1993 11 33 36 32 _ _ — <br /> 1/19/1993 <50 1 <0 5 O fi c0 5 <br /> 4/14/1993 11 75 37 90 <br /> 4/15/1993 — <50 2 9 <0 5 <0 5 <0 5 — <br /> 8/31/1993 1224 37 41 <50 <0 5 <0 5 <0 5 <0 5 <br /> 10/27/1993 12 23 37 42 0 01 <50 <0 5 <0 5 <0 5 1 3 <br /> 2118/1994 11 93 3772 030 <to <0 3 <0 3 <0 3 <0 5 <br /> 5/20/1994 1200 37 65 007 <10 <0 3 <0 3 <0 3 <0 5 <br /> 10/7/1994 1223 3742 023 <50 <0 5 <0 5 <0$ <0 5 <br /> 12/16/1994 11 94 3771 029 <50 <0 6 <0 5 <0 5 <0 5 _ <br /> 2/28/1995 1200 3765 -006 <50 <0 5 <0 5 <0 5 <0 5 — <br /> K UA SP AR00%0z0PMwt.*3 OTR ozTams 123 Ida <br />