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i <br /> Page 15 of 16 <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 H,MSL H,FOG N,MSL Change tt H u /t u v / (ug/L (ug/L (ug/L) (Mg/LL- <br /> ATR-12 <br /> m 2ATR-12 6/7/2000 Well inaccessible <br /> (cont.) 9/25/2000 Well inaccessible <br /> 12/21/2000 Well inaccessible <br /> 3/27/2001 P 9.26 37.82 -0.33 <50.0 <0.500 <0,500 <0.500 <0.500 <2.00' 2.3 <br /> 6/20/2001 P 9.96 37.12 -0.70 <50 <0.50 <0,50 <0.50 <0.50 <2.0' -- <br /> 9/12/2001 P 9138 37.70 0.58 <50 <0.50 <0.50 <0.50 <0.50 <2.5 2.0 <br /> 12/1912001 P 9.28 37.80 0.10 - <50 <0.50 <0.50 <0.50 <0.50 <2.0' 2.32 <br /> 3/14/2002 P 9.29 37.79 -0.01 - <50 <0.50 <0.50 <0.50 <0.50 <0.50 1.B4 <br /> 6/28/2002 P 9.43 $7,65 -0.14 - <50 <0.5 <0.5 <0.5 <0.5 <0.5' 4.5 <br /> 9/11/2002 P 9.38 3770 0.05 <50 <0.5 <0.5 <0.5 <0.5 <0.5' 3.3 <br /> 12117/2002 P 8.78 38.30 0,60 - <50 <04 <0.5 <0.5 <0.5 <0.5' 4.2 <br /> SMW-1 10/7/1994 50.24 12.86 37.38 - -- 2,200 250 110 <0.5 360 - -- <br /> 12/16/1994 12.54 37.70 0.32 - 5,200 740 210 330 600 <br /> 2/2811995 12.40 37.84 0,14 -- 8,300 1,000 330 450 790 <br /> 4/26/1995 12.71 37.53 -0.31 5,100 470 110 270 480 <br /> 7127!1995 13.00 37.24 0.29 7,400 410 42 360 630 <br /> 10/26/1995 (a) 13.03 -- -- - -- _ _ _ <br /> 10/27/1995 - 7,600 640 33 440 410 - <br /> 2/12/1996 12.00 - - 3,800 390 <0.5 220 98 - <br /> 4/18/1996 12.58 -0,58 - 500 60 <0.5 20 7,4 - <br /> 7/18/1996 12.85 -0,27 3,400 200 <5 130 56 60 <br /> 11/15/1996 13.40 -0.55 - 2,500 180 <2.5 62 21 590 -- <br /> 3/14/1997 NP 13.35 0.05 - 1,700 130 <0.5 <0.5 <0.5 230 0.13 <br /> 6/4/1997 NP 12.73 - 0.62 520 36 3.1 1.4 1.5 47 0.05 <br /> 8/11/1997 <br /> 1 111 711 997 NP 12.96 - -- <50 <0,5 <0.5 <0.5 <0.5 290 -- <br /> 3/30/1998 NP 12.15 - 0.81 910 4.6 <0.5 <0.5 1.1 110 1.6 <br /> 6/25/1998 NP 12.70 -0.55 - 69.2 0.666 <0.5 <0.5 <0.5 76.5 1.6 <br /> 9/11/1998 NP 12.90 - -0.20 <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 10/26/1995 (a) 12.86 -- - <350 <5 <0.5 <0.5 <0.5 <br /> 2/12/1996 10,90 1.96 -- -- _ _ <br /> 4118/1996 11.35 -- -0.45 - <50 <0.5 <0.5 <0.5 <0.5 <br /> 7118/1996 11.52 - -0.17 - - <br /> 11115/1996 12.30 -- -0.78 - <br /> 3/14/1997 - - - <br /> 6/4/1997 <br /> 8/11/1997 <br /> 11/17/1997 - <br /> 3/30/1998 11.00 <br /> 6/25/1998 1.00 10.00 <br /> 9/11/1998 <br /> 12/15/1998 11.47 - _ _ _ _ 0.1 <br /> 5/14/1999 11.50 -0.03 - - - - 4.80 <br /> 9116!1999 11.70 -0.20 - - - 2.4 <br /> K.'U8 8P ARCO0MMQ"CerbA4 OTR 09Table <br />