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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) (Erg/L) (pg1L) (pg/L) (mg/L) Comments <br /> VW-5 12/21/2004 P - 45.15 -- 380 - <2.5 <2.5 <2.5 <2.5 3.8[2] 0.7 Water Level Data 12/20/04 <br /> 03127/2005 P -- 42.07 - 150 - <5.0 <5.0 <5.0 <5.0 <5.0[2] 2.1 <br /> VW-6 03/06/2003 - __ _ _ _ _ _ _ - - _ _ <br /> 12110/2003 - - - - - - - - - -- - Well Dry <br /> 03/08/2004 -- - - -- -- _ _ _ __ _ _ - Well Dry <br /> 06/23/2004 NP -- - - - - - - - -- - -- Well Dry,Not Sampled <br /> 09/20/2004 -- - - - - - - -- - Weil Dry,Not Sampled <br /> 12120/2004 - 1 Not Sampled,Well Dry <br /> 103128120051. -- -- -- -- -- - -- -- -- - -- -- Well Dry,Not Sampled <br /> VW-7 5/20/1997 -- -- 45.05 - 56 - 0.6 <0.5 <0.5 0.8 4 -- No FP,No S <br /> 9/1/9998 - -- 41.63 - NA NA NA NA NA NA - <br /> 12/2/1998 - - 38.95 - NA - NA NA NA NA NA - <br /> 3/31/1999 -- -- 38.86 - NA - NA NA NA NA NA - <br /> 6/4/1999 - - 36.63 -- NA -- NA NA NA NA NA - <br /> 9/2/1999 -- -- 41.22 - NA - NA NA NA NA NA -- <br /> 11/29/1999 - -- -- -- -- -- -- -- -- - - Well inaccessible <br /> 3/16/2000 - -- -- - - - - - - - -- Well inaccessible <br /> 6/26/2000 - - 36.82 -- NA -- NA NA NA NA NA - <br /> 9/28/2000 -- 41.13 -- NA -- NA NA NA NA NA -- <br /> 12/19/2002 -- -- 41.69 -- 160 - <0.50 <0.50 1.3 <0.50 11.0[2] -- <br /> 03/06/2003 P - 39.41 -- 440 - 0.59 <5.0 <5.0 <5.0 11[2] 1.1 <br /> 06/1112003 P -- 39.00 - <50 -- <0.50 <0.50 <0.50 <0.50 0.54[2] 4.12 <br /> 09/24/2003 P - 42.99 -- <50 -- <0.50 <0.50 <0.50 <0.50 <0.50[2] -- <br /> 12/10/2003 P -- 41.73 - 210 -- 3.0 <2.5 <2.5 4.8 9.1[2] -- <br /> 03/08/2004 P - 39.45 -- 59 - <2.5 <2.5 <2,5 <2.5 6.3[2] 1.55 <br /> 06/24/2004 P 44.39 -- <50 -- <0.50 <0.50 <0.50 <0.50 1.1[2] 3.06 Water levels taken on <br /> 6/23/04 <br /> 09/20/2004 P -- 48.56 -- <50 -- <0.50 <0.50 <0.50 <0.50 1.2[2] - <br /> 12/20/2004 P - 45.48 - 300 J -- <0.50 <0.50 <0.50 <0.50 13[2] 1.87 <br /> 03/2812005 P -- 42.48 - 280 -- <5.0 <5.0 <5.0 <5.0 9.5[2] 1.4 <br /> VW-8 5/20/1997 -- - 44.81 - 25,000 -- 480 290 260 3,900 <120* - No FP,No S <br /> 9/1/1998 - -- 40.23 - NA -- NA NA NA NA NA -- <br /> Report Date.April 25,2005 Page 19 of 23 <br />