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i i • <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station No 2130 <br /> 7906 N EL Dorado Street, Stockton, CA <br /> TQC 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 msi) (gg/L) (/rg/L) (,vg/L) WL) (pg/L) (Mg1L) (gg/L) (mg/L) Comments <br /> MW-4 9/18/1996 — 1457 5180 -3723 <50 — <05 <0 5 <0 5 <0 5 <3 — No FP No S <br /> 11/26/1996 — 1457 4884 -3427 <50 — <05 <0 5 <05 <0 5 <3 -- No FP,No S <br /> 3/24/1997 -- 1457 4364 -2927 <50 -- <05 <0 5 <05 <0 5 <3 -- No FP,No S <br /> 5/20/1997 -- 1457 4434 -2977 <50 — <05 <0 5 <0 5 <0 5 <3 — No FP,No S <br /> 8/19/1997 -- 1457 4789 -3332 <50 -- <05 <0 5 <05 <0 5 <5 — No FP No S <br /> 11/19/1997 -- 1457 4601 -3144 <50 -- 1 1 0 68 <05 0 54 <5 — <br /> 3/4/1998 — 14 57 41 64 -2707 <50 — <0 5 <05 <05 <0 5 <5 — No FP,No S <br /> 6/26/1998 -- 1457 3916 -2459 <50 -- 141 <05 <05 <0 5 <5 -- <br /> 9/1/1998 — 1457 4183 -2726 <50 — <05 <0 5 <0 5 <0 5 <5 -- <br /> 12/2/1998 -- 1457 382-2 -2365 <50 -- <05 <0 5 <05 <0 5 <5 <br /> 3/31/1999 -- 1457 3477 -2020 <50 -- <05 <05 <0 5 <0 5 <5 — <br /> 6/4/1999 — 1457 3586 -2129 <50 — <0 5 <0 5 <0 5 <0 5 <5 — <br /> 9/2/1999 — 1457 4059 -2602 <50 -- <0 5 <0 5 <0 5 <0 5 <5 <br /> 11/2911999 — 1457 3878 -2421 <50 — <05 <0 5 <0 5 <0 5 <25 — <br /> 31%12000 — 1457 3475 -2018 <50 — <0 5 1 <0 5 <0 5 <0 5 <2 5 -- <br /> 6/26/2000 -- 1457 3721 -2264 <50 — <0 5 <0 5 <0 5 <05 <2[2] -- <br /> 9/28/2000 -- 1457 4158 -2701 <50 — <0 5 <0 5 <0 5 <0 5 <2[2] -- <br /> 12/19/2000 -- 1457 3720 -2263 <50 — <0 5 <0 5 <0 5 <0 5 <25 — <br /> 3/15/2001 - 1457 3503 -2046 <50 — <2[4] <2[4] <2[4] <2[4] <2[2] -- <br /> 6/20/2001 — 1457 3833 -2376 <50 — <2[4] <2[4] <2[4] <2[4] <2[2] — <br /> 9/12/2001 — 1457 4261 -2804 <50 -- <2[4] <2[4] <2[4] <2[4] <2[2] -- <br /> 12/12/2001 — 1457 3937 -2480 <50 — <1 0[4] <1 0[4] <1 0[4] <1 0[4] <0 50[2] — <br /> 3/13/2002 -- 1457 3643 -2186 <50 -- <0 50 <0 50 <0 50 <0 50 <0 50[2] -- <br /> 6/18/2002 — 1457 3870 -2413 <50 -- <0 50 <0 50 <0 50 <0 50 <0 50[2] — <br /> 9/91/2002 — 1457 4386 -2929 <50 — <0 50 <0 50 <0 50 <0 50 <0 50[2] — <br /> 12/18/2002 — 14 57 4108 -2651 <50 — <0 50 <0 50 <0 50 <0 50 <0 50[2] — <br /> 03/06/2003 P 1457 3879 -2422 <50 — <0 50 <0 50 <0 50 <0 50 <0 50[2] 36 <br /> 06/11/2003 P 1457 3822 -2365 <50 — <0 50 <0 50 <0 50 <0 50 <0 5012] 377 <br /> 09/23/2003 P 1457 4225 -2768 <50 — <0 50 <0 50 <0 50 <0 50 <0 50(2] - <br /> 12/09/2003 P 1457 41 09 -2652 <50 — <0 50 <0 50 <0 50 <0 50 <0 50[2] -- <br /> 03/09/2004 P 1457 3885 -2428 <50 — <0 50 <050 <0 50 <0 50 <0 50[2] 149 <br /> 06/23/2004 P 1 1457 4377 -2920 <50 — 080 <0 50 <0 50 050 <0 50[2] 259 <br /> 109/20/20041 P j 14 57 47 95 -33 38 <50 - <2 5 <25 <2 5 <2 5 <2 5[2] 204 <br /> Report Date January 31,2005 Page 9 of 22 <br /> I <br />