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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) (pglL) (pg1L) (pglL) WIL] (pglL) (ug1L) (ugIL) (mg/L) Comments <br /> VW-1 03/08/2004 P I -- 3875 — 770 — 063 J <0 50 59 J 33 J 19[2]J 211 <br /> 06/24/2004 NP — 4301 — 100 -- <50 <50 <50 <50 <5 0[2] 161 Water levels taken on <br /> 6/23104 <br /> 09/20/2004 P I -- 1 4776 1 12,000 J — <25 <25 110 570 1 27[2] 1 — <br /> 12120/2004 P I — I 44 37 1 — 10,000 J j 094 <0 50 96 J 140 13[2] 0 5 <br /> VW-2 12/19/2002 — — 41 00 — 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] 1 15 <br /> 06/11/2003 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 /> 03/08/2004 P — 3883 — 93 -- 078 <0 50 <0 50 <0 50 <0 50[2] 249 <br /> 06/24/2004 P — 4388 — <50 — <0 50 <0 50 <0 50 <0 50 1 0[2] 117 Water levels taken on <br /> 6123/04 <br /> 09/20/2904 P — 4785 — 180 — 15 <0 50 <0 50 <0 50 <0 50[2] 0 9 <br /> 12/21/2004 P — 4441 — 260 — 1 1 <0 s0 <0 50 <0 5o <0 50[2] 15 Water Level Data <br /> 12/20/04 <br /> VW-3 12/19/2002 -- — 4158 — <50 — 0 99 <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 — 4160 — 78 -- 11 <0 50 <0 50 <0 50 5 0(2) — <br /> 03/08/2004 P -- 3930 — 580 — 0 56 J <0 50 66 J 37 J 19[2]J 176 <br /> 06/24/2004 NP — 44 15 -- <50 — <0 50 <0 50 <0 50 <0 50 <0 50[2] 219 Water levels taken on <br /> 6123/04 <br /> 09/20/2004 P -- 4833 -- 160 — 0 98 <0 50 24 1 1 4 4[2] 0 8 <br /> 12!2012004 P — 4491 — 370 J — 10 1 <0 50 38 14 0 69[2] 073 <br /> VW-4 12/19/2002 -- — 41 30 — 110 - 0 93 <0 50 <0 50 <0 50 <0 50[2] — <br /> 03/06/2003 P — 3908 - 280 — 17 <0 50 056 19 <0 50[2] 12 <br /> 06/11/2003 P — 3843 — <50 — <0 50 <0 50 <0 50 <0 50 <0 50[2] 25 <br /> 09/24/2003 P — 4745 — <50 — 050 <0 50 <0 50 <0 50 4 5[2] — <br /> 12/10/2003 P — 41 33 — 120 -- 20 22 44 29 <0 50[2] — <br /> 0310&20041 P -- 3913 — 1,200 — 36 <0 50 77 <0 50 4 6[2] 184 <br /> Report Date January 31,2005 Page 17 of 22 <br /> f <br />