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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 /> TOG Depth to Water Level Ethyl- TotaI <br /> Well Date P/ Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet ms]) Wg1L) (pglL) (pg/L) (ugIL) (pg/L) (pg/L) (pglL} (mg/L) Comments <br /> MW-10 06/11/2003 -- - -- - - - - -- -- - -- - Well Covered <br /> 09/25/2003 - - - -- -- - -- - - - - -- Well Destroyed <br /> VW-1 5/20/1997 - -- 44.16 -- 340,000 - 330 540 2,100 13,000 <1,200* - No FP, No S <br /> 9/1/1998 -- -- 41.75 -- NA - NA NA NA NA NA - NA <br /> 12/2/1998 -- - 38.43 - NA -- NA NA NA NA NA - NA <br /> 3/31/1999 - - 38.91 - NA -- NA NA NA NA NA -- NA <br /> 6/4/1999 - -- 35.78 -- NA - NA NA NA NA NA - NA <br /> 9/2/1999 - 40.30 -- NA - NA NA NA NA NA NA <br /> 11/29/1999 -- -- 38.49 - NA - NA NA NA NA NA - NA <br /> 3/16/2000 - 34.52 - NA -- NA NA NA NA NA - NA <br /> 6/26/2000 -- 37.08 - NA -- NA NA NA NA NA -- NA <br /> 9/28/2000 -- -- 41.34 - NA - NA NA NA NA NA - NA <br /> 12/19/2002 - -- 41.59 - 810 -- <5.0 <5.0 59 130 6.4[2] -- <br /> 03/06/2003 P -- 38.69 - 350 - 0.92 <0.50 2.1 6.8 25[2] - <br /> 06111/2003 P - 37.95 -- <50 -- <0.50 <0.50 <0.50 <0.50 8.4121 3.46 <br /> 09/24/2003 P -- 41.98 - 51 -- <0.50 <0.50 <0.50 <0.50 8.7[2] -- <br /> 12/10/2003 P -- 40.97 - 170 - 1.8 <0.50 6.8 1.5 13[2] - <br /> 03/08/2004 P -- 38.75 - 770 -- 0.63 J <0.50 5.9 J 33 J 19[21J 2.11 <br /> 06/24/2004 NP - 43.01 -- 100 -- <5.0 <5.0 <5.0 <5.0 <5.0[2] 1.61 Water levels taken on <br /> 6/23104 <br /> 09/20/2004 P -- 47.76 - 12,000 J <25 <25 110 570 27[2] - <br /> 12/20/2004 P - 44.37 - 10,000 J -- 0.94 <0.50 96 J 140 13[2] 0.5 <br /> 03128/2005 P -- 41.11 -- 18,000 J -- <0.50 <0.50 22 85 9.8[2] 0.9 <br /> VW-2 12119/2002 - 41.00 -- 120 1.2 <0.50 <0.50 <0.50 <0.50[2] - <br /> 03/06/2003 P 38.75 -- 220 - 1.3 <0.50 <0.50 <0.50 <0.50[2] 1.15 <br /> 06/11/2003 P - 38.08 -- 53 - <0.50 <0.50 <0,50 <0.50 <0.50[2] 3.01 <br /> 09/24/2003 P -- 42.12 - 110 - 0.92 <0.50 <0.50 <0.50 <0.50[2] - <br /> 12/10/2003 P - 40,98 - 300 -- 1.3 <0.50 <0.50 <0.50 <0.50[2] -- <br /> 03/08/2004 P - 38.83 -- 93 - 0.78 <0.50 <0.50 <0.50 <0.50[2] 2.49 <br /> 06/24/2004 P -- 43.88 - <50 -- <0.50 <0.50 <0.50 <0.50 1.0[2] 1.17 Water levels taken on <br /> 6123/04 <br /> 09/20/2004 P - 47.85 -- 180 - 1.5 <0.50 <0.50 <0.50 <0.50[2] 0.9 <br /> 12/21/2004 P - 44.41 - 260 - 1.1 <0.50 <0.50 <0.50 <0.50[2] 1.5 Water Level Data 12!20/04 <br /> Report Date:April 25,2005 Page 17 of 23 <br />