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} <br /> Page 16 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 TPH9 Benzene Toluene benzene (total) MtBE DO <br /> Number Sampled (ft MSL) (ft,TOC) (ft MSL) Change(fl) (tt) T (ug/-) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (mg/L) <br /> SMW 1 8/11/1997 _ — .- <br /> (cont) 11/17/1997 NP 12 96 <50 <0 5 <0 5 <0 5 <0 5 290 <br /> 3/3011998 NP 1215 0 81 910 4 6 <0 5 <0 5 1 1 110 1 6 <br /> 6/25/1998 NP 1270 -- 0 55 — 692 0 666 <0 5 <0 5 <0 5 765 1 6 <br /> 9/11/1998 NP 1290 — -020 <50 <0 5 <0 5 <0 5 <0 5 290 1 7 <br /> 12/15//1998 <br /> tr monitored or sampled <br /> TEX 1 10/26/1995 (a) 1286 — <350 <5 <0 5 <0 5 <05 -- — <br /> 2/12/1996 1090 1 96 — — -- <br /> 4/18/1996 11 35 -045 — <50 <0 5 <05 <0 5 <0 5 <br /> 7/18/1996 It 52 — -0 17 -- — — — <br /> 11/15/1996 1230 078 — <br /> 3/14/1997 -- » <br /> 6/4/1997 <br /> 6/11/1997 _11/17/1997 <br /> _ » <br /> 3/30/1998 11 00 <br /> 6/25/1998 100 1000 — _ _ <br /> 9/11/1998 <br /> 12/15/1998 11 47 — 0 1 <br /> 5/14!1999 11 50 003 — 4 8 <br /> 9/16/1999 11 70 020 24 <br /> 12/22/1999 1156 — 014 183 <br /> 2/29/2000 1098 0 58 4 0 <br /> 6/7/2000 - <br /> 9/2512000 — _ <br /> 12/21/2000 11 88 — <br /> 3/27/2001 11 34 0 54 <br /> 6/20/2001 11 53 019 — <br /> 9/12/2001 11 62 009 1 6 <br /> 12/19/2001 11 42 020 <br /> 3/14/2002 11 45 -0 03 — -- — <br /> 6/28/2002 11 67 0 22 — — <br /> 9/11/2002 11 64 003 — — — — <br /> 12/17/2002 1096 068 — -- — <br /> 3/3112003 11 40 0 44 — -- — <br /> 619/2003 11 26 — -014 Not Sampled <br /> TB 1 12/19/2001 — <50 <0 50 <0 50 <0 50 <0 50 — <br /> QTCB 311412002 <50 <0 50 <0 50 <0 50 <0 50 <br /> K 1 WprwmW6 BP ARC0%=31Quw11erW QTR=2093 OWMR 2003 <br />