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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) (pglL) (pglL) WgIL) (f g1L) (pglL) (pg1L) (mg/L) Comments <br /> VW-1 3/31/1999 - -- 38.91 - NA - NA NA NA NA NA -- NA <br /> 6!411999 -- 35.78 - NA -- NA NA NA NA NA -- NA <br /> 9!211999 - - 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 - 8,10 - <5.0 <5.0 59 930 6.4[2] - <br /> 03I06l2003 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 8.4[2] 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[2]J 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 /> 6/23/04 <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] 0.50 <br /> 03/28/2005 P - 41.11 -- 18,000 J -- <0.50 <0.50 22 85 9.8[2] 0.90 <br /> 06/19/2005 P -- 41.96 -- 5,400 J - <2.5 <2.5 35 J 130 4.8[2]J 0.90 <br /> 09112/2005 P - 45.94 -- 24,000 J <10 <10 220 790 J <10[2] 9.70 Water levels taken on <br /> 9111105 <br /> VW-2 12/19/2002 - 41.00 -- 120 -- 1.2 <0.50 <0.50 <0.50 <0,5012] - <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 1.0121 1.17 Water levels taken on <br /> 6/23/04 <br /> 09/20/2004 P -- 47.85 -- 180 - 1.5 <0.50 <0.50 <0.50 <0.50[2] 0.90 <br /> 12/21/2004 P -- 44.41 - 260 - 1.1 <0.50 <0.50 <0.50 <0.50121 1.50 Water Level Data 12/20/04 <br /> 03/27/2005 P I - 41.93 -- 110 -- <2.5 <2.5 <2.5 <2.5 <2.5[2j 2.50 <br /> 06/19/2005 P I - 41.55 - 120 J - 0.62 J <0.50 <0.50 <0.50 <0.50[2) 0.90 <br /> Report Date:October 21, 2005 Page 18 of 24 <br />