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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) {1rgIL) (pg/L) (pg/L) (,ig/L) (pg1L) (pg1L) (pg/L) (mg/L) Comments <br /> MW-10 9/11/2002 -- -- - — -- -- — -- -- -- -- Well Covered <br /> 12/18/2002 -- -- - - -- — — — -- -- Well Covered <br /> 06/11/2003 -- - -- -- -- __ _ .. -- Well Covered <br /> 09/25/2003 -- -- -- - — -- — _ - -- Well Destroyed <br /> VW-1 5/20/1997 -- - 4416 — 340,000 330 540 2100 13,000 <1,200* No FP No S <br /> 9/1/1998 - -- 4175 -- NA NA NA NA NA NA NA <br /> 12/2/1998 -- — 3843 -- NA — NA NA NA NA NA -- NA <br /> 3/31/1999 — - 3891 -- NA -- NA NA NA NA NA — NA <br /> 6/4/1999 — — 3578 -- NA - NA NA NA NA NA - NA <br /> 9/2/1999 — 4030 — NA -- NA NA NA NA NA — NA <br /> 11/29/1999 — — 3849 — NA - NA NA NA NA NA — NA <br /> 3/16/2000 -- - 3452 — NA — NA NA NA NA NA — NA <br /> 6/26/2000 — 3708 -- NA -- NA NA NA NA NA NA <br /> 9/28/2000 — - 4134 -- NA -- NA NA NA NA NA -- NA <br /> 12/19/2002 — 4159 — 810 -- <50 <50 59 130 6 4[2] <br /> 03/06/2003 P - 3869 -- 350 -- 092 <0 50 21 68 25[2] -- <br /> 06/11/2003 P - 3795 -- <50 -- <0 50 <050 <0 50 <0 50 8 4[2] 346 <br /> 09/24/2003 P — 41 98 — 51 -- <0 50 <0 50 <0 50 <0 50 8 7(2] -- <br /> 12/10/2003 P — 4097 — 170 -- 18 <0 50 68 15 13[2] — <br /> 03/08/2004 P -- 3875 -- 770 -- 063 J <0 s0 59 J 33 J 19[2]J 211 <br /> VW-2 12/19/2002 -- - 4100 — 120 — 12 <0 50 <0 50 <0 50 <0 50[2] -- <br /> 03/06/2003 P 3875 — 220 1 3 <0 50 <0 50 <0 50 <0 50[2] 115 <br /> 06/1112003 P 3808 — 53 <0 50 <0 50 <0 50 <0 50 <0 50[2] 301 <br /> 09/24/2003 P -- 4212 — 110 — 092 <0 50 <0 50 <0 50 <0 50[2] -- <br /> 12/10/2003 P — 4098 — 300 -- 13 <0 50 <0 50 <0 50 <0 50[2] — <br /> 03I0812004 P -- 3883 -- 93 -- 078 <0 50 <0 5o <0 50 <0 50[2] 249 <br /> VW-3 12/19/2002 -- 4158 -- <50 - 099 <0 50 38 1 8 9[2] -- <br /> 03/06/2003 P - 3923 — 120 1 2 <0 50 4 0 31 14[2] 1 4 <br /> 06/11/2003 P 3876 -- <50 -- <0 50 <0 50 <0 50 <0 50 2 6[2] 456 <br /> 09/24/2003 P — 4274 <50 -- <0 50 <0 50 <0 50 <0 50 5 4[2] — <br /> 12/10/2003 P -- 41 60 -- 78 11 <0 50 <0 50 <0 50 5 0[2] - <br /> 03/0812004 P -- 3930 -- 580 -- 056 J <0 50 66 J 37 J 19[2]J 176 <br /> VW-4 12/19/2002 -- — 41 30 — 110 — 093 <0 50 <0 50 <0 50 <0 50[2] -- <br /> Report Date May 12,2004 Page 15 of 19 <br />