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• Pa 10 of 21 <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) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (mg/L) <br /> ATR 6 10/7/1994 1185 $750 - <50 <0 5 <0 5 <0 5 <0 5 <br /> (cont) 12/16/1994 11 54 3781 0 31 <50 <0 5 <0 5 <0 5 <0 5 -- <br /> 2/28/1995 1165 3770 -011 - <50 <0 5 <0 5 <0 5 <0 5 <br /> 4/26/1995 -- - - -- - -- . <br /> 7/27/1995 - -- - -- <br /> 10/26/1995 1218 3717 -- - <50 <0 5 <0 5 <0 5 <0 5 - <br /> 2J 121 i 996 1157 3778 0 61 <60 <0 5 <0 5 <0 5 <0 5 - - <br /> 4/18/1996 1191 3744 -034 - - -- -- -- <br /> 7/18/1996 1201 37 34 -010 - <50 <0 5 <0 5 <0 5 <0 5 10 <br /> 11/15/1996 1263 3672 -062 -- -- -- -- - <br /> 1 1997 -- - -- - -- -- -- <br /> -- - -- <br /> 6/4/1997 1201 3734 -- - -- -- -- -- 014 <br /> 8/11/1997 NP 1223 3712 -0 22 <50 <0 5 <0 5 <0 5 <0 5 56 11/17/1997 1224 3711 -001 -- -- -- -- -- -- <br /> 3/3011998 NP 1169 3766 056 <50 <0 5 <0 5 <0 5 <0 5 41 1 9 <br /> 6/25/1998 1197 3738 -028 -- -- -- <br /> 9/11/1998 NP 1208 3727 -011 <50 <0 5 <0 5 <0 5 <0 5 <5 0 1 27 <br /> 12/15/1998 1195 37 40 0 13 - -- - - -- 0 9 <br /> 3/17/1999 NP 11 86 3749 009 <50 <0 5 <0 5 <0 5 <0 5 <5 0 1 9 <br /> 5/14/1999 1201 3734 -0 15 - -- -- -- -- -- 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 /> 2/29/2000 NP 1165 3770 041 <50 <0 5 <05 <0 5 <0 5 107 5 0 <br /> 6/7/2000 NP 1210 3726 045 -- -- -- -- -- <br /> 9/25/2000 NP 1222 3713 -012 -- <50 <0 5 <0 5 <0 5 <0 5 <2 50 070 <br /> 12/29/2000 1200 3735 022 -- -- -- -- -- - 5 1 <br /> 3/27/2001 P 1193 3742 007 <50 0 <0 500 <0 500 <0 500 <0 500 52 1* 4 1 <br /> 6/20/2001 1204 3731 -011 -- -- -- -- -- -- -- <br /> 9/12/2001 P 1203 37 32 0 01 <60 <0 50 <0 50 <0 50 <0 50 12 1 8 <br /> 12/19/2001 1195 3740 008 -- -- - -- -- - -- -- <br /> 3/14/2002 <br /> - <br /> 3/f4/2002 P 11 97 3738 -002 -- <50 <0 50 <0 50 <0 50 <0 50 1 8" 0 86 <br /> 6/27/2002 -- -- -- -- -- -- - <br /> 9/11/2002 P 1200 3735 -- <50 <0 5 <0 5 <0 5 <0 5 0 68* 14 <br /> 101712002 -- -- - - -- - <br /> 3/31/2003* P 1192 3743 — -- <50 <0 5 <0 5 <0 5 <0 5 1 2 0 9 <br /> ATR-7 3/10/1989 4965 -- -- <200 <0 5 <0 5 <0 5 17 -- -- <br /> K\WprcmsIJ5 BP ARM02093Quarteflym <br /> -K1WprcrosU5BPARM020931Quartedym QTR 0352093 OWMR1003 <br />