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Table 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station No. 2130 <br /> 7906 N. EL Dorado Street, Stockton, CA <br /> TO 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) (,ug1L) (dug/L) W/L) (Ng1L) (1rg/L) (pg/L) (Erg/L) (mg/L) Comments <br /> VW-2 0312712005 P -- 41.13 - 110 -- <2.5 <2.5 <2.5 <2.5 <2.5[2] 2.5 <br /> VW-3 12/19/2002 -- -- 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] 1.4 <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 /> 1 211 0/20 0 3 P - 41.60 - 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] 0.8 <br /> 12!2012004 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] 0.3 <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] 1.2 <br /> 06/11/2003 P -- 38.43 -- <50 - <0.50 <0.50 <0.50 <0.50 <0.50[2] 2,5 <br /> 09/24/2003 P - 47.45 - <50 -- 0.50 <0.50 <0.50 <0.50 4.5[2]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 /> 6123/04 <br /> 09/20/2004 P -- 48.13 - 11 D - <D.SD <D.50 <Q.50 <0.50 <0.5D[2] 1.5 <br /> 12/20/2004 P - 44.59 - 190 J - <0.50 <0.50 <0.50 <0.50 <0.50[2] 2.4 <br /> 03/27/2005 P -- 41.31 - 150 -- 0.50 <0,50 <0.50 <0.50 <0.50[2] 1.6 <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] 5.6 <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 /> 1211012003 P - 41.15 - 260 -- 1.2 <0.50 <0.50 <0.50 <0.50[2] - <br /> 03/08/2004 P -- 39.67 -- 150 -- 1.0 <0.50 <0.50 <0.50 <0.50[2] 3.08 <br /> 06/24/2004 NP -- 44.68 -- 110 -- <2.5 <2.5 <2.5 <2.5 <2.5[2] 1.57 Water levels taken on <br /> 6123/04 <br /> 09/20/2004 P -- 48.68 -- 150 -- <5.0 <5.0 <5.0 <5.0 <5.0[2] 1.1 <br /> Report Date.,April 25,2005 Page 18 of 23 <br />