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0 <br /> e 6 c1 16 <br /> Tablo 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 (fl MSL) (fl TOC) (it MSL) Change(fl) (tt) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) {mg/L) <br /> ATR 5 3/10/1989 4873 6 600 693 <5 0 327 7 » _ <br /> 6/29/1989 1052 3821 2200 490 2 4 280 1 3 <br /> 9/1811 989 10 98 3776 046 1 000 68 1 1 63 5 B — — <br /> 12/27/1989 1076 3797 022 2200 94 2 150 <1 <br /> 4/18/1990 1090 37 63 0 14 1 900 120 2 6 68 140 » <br /> 10/16/1990 — — 1 000 18 47 79 16 — <br /> 10/19/1990 11 10 3763 <br /> 1/10/1991 1084 3769 0 26 350 7 1 1 2 16 2 6 — <br /> 4/10/1991 1067 3806 017 — 370 4 6 <0 5 7 <0 5 <br /> 7!1011991 1102 37 71 035 1 200 9 5 <0 5 18 1 5 — <br /> 9l2411991 11 29 3744 027 <50 <0 5 <0 5 <0 5 <0 5 <br /> t123/1992 1078 3795 0 51 180 1 4 1 5 1 5 <0 5 <br /> 4/20/1992 1070 3803 008 <br /> 4/21/1992 290 1 6 <0 5 2 <0 5 — <br /> 7/8/1992 1097 3776 240 <0 5 <0 5 0 6 <0 5 » <br /> 10/7/1992 11 11 37 62 0 14 — <br /> 10/8/1992 - 160 <0 5 <0 5 <0 5 <0 5 <br /> 1/18/1993 9 94 38 79 <br /> 1/19/1993 — 1 000 2 5 <0 5 7 9 1 3 <br /> 4/14/1993 10 47 3826 _ <br /> 4/15/1993 — — 810 1 5 <0 5 8 3 09 <br /> 8/31/1993 11 16 3757 80 <0 5 <0 5 <0 5 <0 5 <br /> 10/27/1993 11 11 3762 006 63 <0 5 <0 5 <0 5 <0 5 » <br /> 2/18/1994 1073 3800 038 160 3 5 1 4 <br /> 5/20/1994 1082 37 91 009 600 <0 3 2 1 2 1 7 — <br /> 10/7/1994 11 14 37 59 032 660 <0 5 <0 5 <0 5 <0 5 <br /> 12/16!199410 77 3796 0 37 410 6 5 <0 5 <0 5 <0 5 _ <br /> 2/28/1995 ,080 3793 003 60 <0 6 0 6 <0 5 <0 5 <br /> 4/26/1995 11 04 37 69 0 24 83 <0 5 <0 5 <0 5 <0 5 — <br /> 7/27/1995 11 27 37 46 023 58 <0 5 <0 5 <0 5 1 2 — <br /> 1 0/2 611 99 5 (a) 1051 <br /> 1 012711 99 5 <520 <5 <0 5 <0 5 <0 5 <br /> 2/12/1996 9 60 — 92 1 <0 5 <0 5 <0 5 <br /> 4/18/1996 806 1 54 60 <0 6 <0 5 <0 5 <0 5 » <br /> 7/18/1996 1011 205 280 4 8 <0 5 <0 5 <0 5 14 <br /> 1 111 511 996 <br /> 3!14/1997 1094 <50 <0 5 <0 5 <0 5 <0 5 <2 5 015 <br /> 6/4/1997 NP 1026 0 68 97 2 7 <0 5 <0 5 <0 5 <2 5 017 <br /> 8/11/1997 NP 10 44 018 220 3 4 0 6 <0 5 <0 5 6 9 <br /> 11/1711997 NP 1050 006 190 2 8 066 <0 5 <0 5 51 <br /> 313011998 NP 9 81 — 0 69 88 <0 5 <0 5 <0 5 <0 5 6 2 2 1 <br /> 6/25/1998 NP 1011 0 30 <50 <0 5 <0 5 <0 5 <0 5 911 1 5 <br /> 9/11/1998 Well inaccessible <br /> 1211611998 NP 1020 — 134 <0 5 <0 5 <0 5 <0 5 8 98 1 7 <br /> 3/17/1999 NP 9 81 0 39 756 0 586 <0 5 0 876 1 02 <5 0 7 4 <br /> 5/14/1999 NP 10 34 0 53 <50 <0 5 <0 5 <0 5 <0 5 <5 8 5 <br /> 9/16/1999 NP 1040 — 006 — <50 <0 5 <0 5 <0 5 <0 5 512 2 2 <br /> 1 212 211 999 NP 1030 0 10 <50 <0 5 <0 5 <0 5 <0 6 <2 50 6 35 <br /> K U5 SP ARM20031Qtwt,rtA3 QTR 02%TWAa 1_2 3 At <br />