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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 P/ Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (1rg1L) (1rg1L) (pg1L) (Frg1L) (4ig1L) (erg/L) WIL) (mg1L) Comments <br /> VW-8 12/10/2003 P -- 4160 — 81 -- 1 1 <0 50 <0 50 <0 50 4 9[2] — <br /> 03/08/2004 P -- 3936 -- 1 500 -- 120 <2 5 64 <2 5 <2 5[2] 106 <br /> 06/24/2004 NP — 4411 — 130 -- 26 <2 5 <2 5 <2 5 2 8[2] 217 Water levels taken on <br /> 6123104 <br /> .09120120041 P 1 4840 1 — 51,000 J — 2,400 110 340 200 <50[2] 04 <br /> VW-9 03/06/2003 — — — — — -- — — — -- -- -- <br /> 12/10/2003 — -- — - — — — -- — — — -- Well Dry <br /> 03/08/2004 — -- — — - — — — — -- Well Dry <br /> 06/23/2004 NP — -- — — — — -- — — -- — Well Dry,Not Sampled <br /> 0912012004 — — — -- -- — — — — — — -- Well Dry,Not Sampled <br /> VW-10 12/19/2002 -- — 4159 — 14,000 — 2,800 890 890 3,600 <10 0[2] - <br /> 03/06/2003 P — 3913 — 20,000 — 2,600 260 1,300 4,900 <50[2] 23 <br /> 06/11/2003 P — 3866 — 14,000 -- 1,600 39 1,100 3,300 <25[2] 392 <br /> 09/24/2003 P — 4270 — 2,800 -- 180 74 270 480 <5 0[2]12/1012003 P — 4161 — 20 000 — 3,200 J 720 J 2 100 J 6,800 J <5 0[2] -- <br /> 03/08/2004 P — 3919 — 1,500 — 110 <25 62 <2 5 <2 5[2] 276 <br /> 06/24/2004 NP 4402 — 150 - <25 <2 5 <2 5 <2 5 2 8[2] — Water levels taken on <br /> 6123/04 <br /> 09/20/2004 P -- 4815 — 640 — 84 76 37 140 <2 5[2] 08 <br /> VW-11 12/19/2002 — — 41 28 -- 55 — 51-- <0 50 064 <0 50 0 98[2] — <br /> 03/06/2003 P -- 3904 -- 110 -- 12 <0 50 051 1 8 <0 50[2] 18 <br /> 06/1112003 P — 3857 -- <50 — <0 50 <0 50 <0 50 <0 50 <0 50[2] 396 <br /> 09/24/2003 P - 4261 — 74 -- <0 50 <0 50 <0 50 <0 50 8 0[2] — <br /> 12/1012003 P — 4132 — 180 — 13 1 <0 50 21 1 3 12[2] — <br /> 03/08/2004 P -- 3911 — 460 -- 0 55 J <0 50 1 6 J 90 J 20[2]J 251 <br /> 06/23/2004 P — 4400 — <50 — <0 50 <0 50 <0 50 <0 50 <0 50[2] 141 <br /> 09/20/2004 P -- 4816 .. 420 — 27 <0 50 32 13 0 63[2] 10 <br /> VW-12 5/20/1997 -- — 4378 — 1,500 -- 150 1 58 <i' <6` -- No FP,No S <br /> 9/1/1998 -- — 4065 -- NA -- NA NA NA NA NA — <br /> 12/2/1998 — — 3766 -- NA — NA NA NA NA NA -- <br /> 3/31/1999 — 3757 -- NA — NA NA NA NA NA — <br /> 6/4/1999 — — 3536 — NA - NA NA NA NA NA — <br /> Report Date October 25,2004 Page 19 of 21 <br />