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Table 1 <br /> Groundwater Elevation and Analytical Date <br /> ARCO Service Station No 2093 <br /> 3425 Tracy Boulevard Tracy California <br /> Well Depth Groundwater Groundwater Product Ethyl- Xylenes <br /> Wel! Date Elevation to Water Elevation Elevation Thickness TPHg Benzene Toluene benzene (total) M1BE DO <br /> Number Sampled (ft,MSL) (ft TOC) (ft MSL) Change(ft) (ft) (pg/L) Ws&) 4198-) (ug/L) (yg/L) WWI- mglL <br /> SMW-1 10!7/1994 5024 12 86 3738 - 2 200 250 110 <0 5 360 - <br /> 12/16/1994 1254 3770 032 5200 740 210 330 600 <br /> 2/28/1995 1240 3784 014 8 300 1 000 330 450 790 - <br /> 4/26/1995 1271 37 53 031 5 100 470 110 270 480 - <br /> 7/27/1995 1300 3724 029 - 7 400 410 42 360 630 -10/26/1995 (a) 1303 -- -- -- -- -- - - <br /> 10/27/1995 - - - 7 600 640 33 440 410 - <br /> 2/12/1996 1200 - - - 3 800 390 <0 5 220 98 - - <br /> 4/18/1996 1258 0 58 500 60 <0 5 20 74 - - <br /> 7/18/1996 1285 -027 3 400 200 <5 0 130 56 60 - <br /> 11/15/1996 1340 -055 - 2 500 180 C2 5 62 21 590 -- <br /> 3/14/1997 NP 1335 005 1 700 130 <0 5 <0 5 <0 5 230 013 <br /> 6/4/1997 NP 1273 062 - 520 36 31 1 4 1 5 47 005 <br /> 8/11A997 - - - -11/17/1997 NP 1296 - - - <50 <0 5 <0 5 <0 5 <0 5 290 -- <br /> 3/30/1998 NP 12 15 081 910 4 6 <0 5 <0 5 11 110 1 6 <br /> 6/25/1998 NP 1270 055 - 69 2 0 666 <0 5 <0 5 <0 5 765 1 6 <br /> 9111/1998 NP 1290 - -020 - <50 <0 5 <0 5 <0 5 <0 5 290 1 7 <br /> 12/15/1998 _ - _ - - _ .- _ <br /> Well no longer monitored or sampled <br /> TEX-1 M26/1995 (a) 1286 - - <350 <5 <0 5 <0 5 <0 5 - - <br /> 2/12/1996 1090 - 1 96 - - - - <br /> 4/18/1996 11 35 -0 45 - <50 <0 5 <0 5 <0 5 <0 5 » <br /> 7/18/1996 11 52 017 - - - - - - -11/15/1996 1230 -078 - - - - - - <br /> 3114/1997 - -- - <br /> 6/4/1997 - - - - -8111/1997 - - - - - - <br /> 11/17/1997 - - - - <br /> 3130/1998 11 00 - - - - - <br /> 6/25/1998 1 00 1000 <br /> 9/11/1998 <br /> 12/15/1998 11 47 -- - - - - 01 <br /> 5/14/1999 11 50 -003 - - - - 48 <br /> 9/16/1999 11 70 -020 - - - w -- 24 <br /> 12/22/1999 11 56 - 014 - - - - - 1 83 <br /> 2/29/2000 1098 0 58 - - 40 <br /> 6!7/2000 __ _ _ _ _ _ - <br /> 9/25,2000 - - - <br /> 12/21/2000 11 88 -- - <br /> 3/27P2001 11 34 - 0 54 - - <br /> 6/2012001 11 53 -019 - - - - <br /> 9/12P1001 11 62 „ -009 - - 1 6 <br /> 12/19/2001 11 42 - 020 - - - - - - <br /> 3/14/2002 11 45 -003 - - - <br /> 6/282002 11 67 -022 <br /> 9/1112002 11 64 003 - - - - - <br /> 12/17/2002 1096 - 068 -3131/2003 11 40 -044 - » <br /> 6/9/2003 11 26 -014 Not Sampled <br /> 9/18!2003 11 64 - 038 <50 <0 5 <0 5 <05 <0 5 <0 5 31 <br /> 12/24/2003 11 55 - -009 - Not Sampled <br /> TB 1 12/19/2001 - - <50 <0 5 <0 5 <0 5 <0 5 - <br /> QTCB 3/1412002 <50 <0 5 <0 5 <0 5 <0 5 - <br /> K 1Wproceea JS 9P AR0002093%0ua'tee04 Wn 0312093 GWNR 4(703 Page 13 of 14 <br />