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J <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station No. 2130 <br /> 7906 N. EL Dorado Street, Stockton, CA <br /> TOC Depth to Water Level Ethyl- Total <br /> Well Date PI Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (pg1L) (pg/L) (pgIL) (pg/L) (pg/L) (pg/L) (pg/L) (mg/L) Comments <br /> VW-2 09/1112005 P -- 46.11 -- 64 -- 0.95 <0.50 <0.50 <0.50 <0.50[21 1.0 <br /> VW-3 12/99/2002 -- - 41.58 - <50 - 0.99 <0.50 3.8 1 8.9[2] -- <br /> 03/06/2003 P - 39.23 - 120 - 1.2 <0.50 4.0 3.1 14[2] 1.40 <br /> 06/11/2003 P - 38.76 - <50 -- <0.50 <0.50 <0.50 <0.50 2.6[2] 4.56 <br /> 09/24/2003 P - 42.74 -- <50 -- <0.50 <0.50 <0.50 <0.50 5.4[2] -- <br /> 12/10/2003 P -- 49.60 -- 78 - 1.1 <0.50 <0.50 <0.50 5.0[2] -- <br /> 03/08/2004 P -- 39.30 - 580 - 0.56 J <0.50 6.6 J 37 J 19[2]J 1.76 <br /> 06/24/2004 NP - 44.15 - <50 -- <0.50 <0.50 <0.50 <0.50 <0.50[2] 2.19 Water levels taken on <br /> 6123104 <br /> 09/20/2004 P - 48.33 -- 160 - 0.98 <0.50 2.4 1.1 4.4[2] 0.80 <br /> 12/20/2004 P -- 44.91 - 370 J -- 1.0 <0.50 3.8 1.4 0.69[2] 0.73 <br /> 03/28/2005 P - 41.68 - 150 -- <0.50 <0.50 1.0 0.62 1.9[2] 0.30 <br /> 06/19/2005 P - 41.86 -- 220 J -- 0.58 J <0.50 2.5 J 2.1 1.4[2]J 0.10 <br /> 09/11/2005 P - 46.52 - 370 -- 1.0 <0.50 7.1 3.7 1.0[2] 0.40 <br /> VW-4 12/19/2002 - -- 41.30 - 110 - 0.93 <0.50 <0.50 <0.50 <0.50[2] - <br /> 03/06/2003 P - 39.08 - 280 - 1.7 <0.50 0.56 1.9 <0.50[2] 1.20 <br /> 06/11/2003 P -- 38.43 - <50 <0.50 <0.50 <0.50 <0.50 <0.50[2] 2.50 <br /> 09/24/2003 P -- 47.45 -- <50 - 0.50 <0.50 <0.50 <0.50 4.5[2] - <br /> 12/10/2003 P - 41.33 -- 120 -- 20 22 4.4 29 <0.50[2] - <br /> 03/08/2004 P -- 39.13 -- 1,200 - 36 <0.50 7.7 <0.50 4.6[2] 1.84 <br /> 06/24/2004 P - 43.96 -- <50 <0.50 <0.50 <0.50 <0.50 <0.50[2] 2.44 Water levels taken on <br /> 6/23104 <br /> 09/20/2004 P - 48.13 - 110 -- <0.50 <0.50 <0.50 <0.50 <0.50[2] 1.50 <br /> 12/20/2004 P - 44.59 -- 190 J <0.50 <0.50 <0.50 <0.50 <0.50[2] 2.40 <br /> 03/27/2005 P -- 41.31 - 150 - 0.50 <0.50 <0.50 <0.50 <0.50[2] 1.60 <br /> 06/19/2005 P - 41.83 - 220 J - <0.50 <0.50 <0.50 <0.50 <0.50[2] 1.40 <br /> .09111/2005. P -- 46.31 -- 210 -- <0.50 <0.50 <0.50 <0.50_]__ <0.50[2] 1.20 <br /> VW-5 12/19/2002 - - 41.11 - 110 - 4 1.1 0.76 0.75 6.0[2] - <br /> 03/06/2003 P -- 39.61 -- 570 - 3.0 0.65 <10 <10 5.1[2] 5.60 <br /> 06/11/2003 P - 38.77 - <50 - <0.50 <0.50 <0.50 <0.50 <0.50[2] 3.12 <br /> 09/24/2003 P - 42.80 - 110 -- 0.91 <0.50 <0.50 <0.50 <0.50[2] - <br /> 12/10/2003 P - 41.15 -- 260 - 1.2 <0.50 <0.50 <0.50 <0.50[2] -- <br /> Report Date:October 21,2005 Page 19 of 24 <br />