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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 /> 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) (pg/L) (pg/L) (pg/L) (pg/L) (pglL) (pg/L) (pg/L) (mglL) Comments <br /> VW 12 03/06/2003 P 3827 440 R <0 50 <0 50 <050 <0 50 0 98[2] <br /> 06/11/2003 P 3761 <50 <0 50 <0 50 <0 50 <050 <0 50[2] <br /> 09/24/2003 P 4171 -- <50 <0 50 <050 <0 50 <0 50 <0 50[2] <br /> 12/10/2003 P 4131 210 -- <25 <25 <2 5 <25 9 5[2] <br /> 03/08/2004 P 3834 <50 - <0 50 <0 50 <050 <0 50 <0 50[2] 201 <br /> 06/24/2004 P 4322 <50 <050 <050 <050 <050 <0 50[2] 222 Water levels taken on <br /> 6/23/04 <br /> 09/20/2004 P 4738 230 <25 <2 5 <2 5 <25 <2 5[2] 1 0 <br /> 12/20/2004 P 4457 - 330 J <0 50 <0 50 <050 <0 50 0 82[2] 235 <br /> 03/28/2005 P 4155 310 23 <50 65 <5 0 <5 0[2] 1 6 <br /> 06/20/2005 P 41 86 210 J 38 1 <0 50 1 2 J <0 50 1 5[2)J 13 Water level taken 6/19/05 <br /> 09/1212005 P 4637 160 - 1 0 <050 <050 <0 50 0 81[2] 1 6 Water levels taken on <br /> 9/11/05 <br /> 12/11/2005P — 4288 - 420 ' — <0 50 <0 50 <0 50 059 1 0]2]J 108 <br /> Report Date January 25,2006 Page 24 of 25 <br />