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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 /> I <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) (pg/L) (prg1L) WL) WIL) (ug1L) (pg/L) U,9/L) (mg1L) Comments <br /> MS-1A 12/19/2002 — -- 4239 — NA — NA NA NA NA NA -- <br /> 03/06/2003 P — 3886 - 240 — 22 66 17 12 <0 50[2] 1 9 <br /> 06/11/2003 P 3812 — 110 — 16 64 16 10 0 55[2] 686 <br /> 09/24/2003 P — 4215 — <50 — <0 50 <0 50 <0 50 <0 50 0 51[2] — <br /> 12/10/2003 P — 4243 — 120 — 16 18 37 24 0 58[2] -- <br /> 0310912004 P -- 3894 — 170 — 22 <0 50 <0 50 <0 50 7 7[2] 211 <br /> 06/24/2004 P — 4345 — <50 — 28 22 <0 50 20 <0 50[2] 101 Water levels taken on <br /> 6123104 <br /> 0912012004 P -- 4758 — <50 -- <0 50 <0 50 <0 50 <0 50 <0 50[2] 08 <br /> MS-113 12/19/2002 — — 4196 -- 82 — 10 <0 50 1 8 <0 50 <0 50[2] — <br /> 03/06/2003 P — 3900 — 510 — 93 10 46 21 <0 50(2] 1 3 <br /> 06/11/2003 P — 3833 — 130 — 27 16 J <0 50 069 J <0 50[2] 315 <br /> 09/24/2003 P -- 4230 — <50 -- <0 50 <0 50 <0 50 <0 50 0 62[2] — <br /> 12/10/2003 P - 41 99 — 120 - 14 15 31 20 0 57[2] — <br /> 03/09/2004 P — 3907 -- 430 — 25 <0 50 <0 50 <0 50 8 9[2] 296 <br /> 06/24/2004 P — 4338 — <50 UJ — 26 22 <0 50 1 9 <0 50[2] 1 Water levels taken on <br /> 6123104 <br /> 09120/20D4 P — 4759 — <50 — 39 J 056 J <0 5D <0 50 <0 50[2] 34 <br /> MS-2A 12/19/2002 — — 41 38 — <50 - <0 50 <0 50 <0 50 <0 50 0 79[2] — <br /> 03/06/2003 P -- 3920 -- 62 — 14 059 12 55 0 61[2] 40 <br /> 06/11/2003 P — 3880 — <50 - <0 50 <0 50 <0 50 <0 50 <0 50[2]UJ 312 <br /> 09/24/2003 P — 4281 — <50 — <0 50 <0 50 <0 50 <0 50 0 62[2] -- <br /> 12/10/2003 P — 4141 — 150 — 18 20 37 25 0 60[2] — <br /> 03/09/2004 P — 3926 — 1,000 — 33 <050 71 <0 50 3 8[2] 1 07 <br /> 06/23/2004 P - 4404 — <50 — 052 <050 <0 50 <0 50 <0 50[2] 202 <br /> 09/20/2004 P — 4808 — <50 I -- 070 <0 50 <0 50 <0 50 <0 50[2] 27 <br /> MS-213 12/19/2002 - — 4142 -- 170 — 065 <0 50 <0 50 <0 50 <0 50[2] — <br /> <0 50 0 99 4 6 <0 50 <br /> 03/06/2003 P — 3916 — 87 — 11 [2] 31 <br /> 06/11/2003 NP — 3869 - <50 — <0 50 <0 50 <0 50 <0 50 <0 50[2]UJ 419 <br /> 09/24/2003 — — 4261 <50 — <0 50 <0 50 <0 50 <0 50 0 65[2] -- <br /> 12/10/2003 P — 4145 — 110 — 13 15 3 0 19 0 60[2] — <br /> 03109120D4 P — 3923 — 1 100 — 29 <0 50 64 <0 50 5 0[21 — <br /> Report Date October 25, 2004 Page 1 of 21 <br />