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v <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station No 2186 <br /> 3212 N California, 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) (,vglL) (pglL) (pgll.) (pg1L) (I.gIL) (pg1L) (pglL) (mg1L) Comments <br /> MW-3 10/19/2000 -- 1455 3996 -2541 NA — NA NA NA NA NA — Not observed <br /> 12/20/2000 -- 1455 3811 -2356 <50 -- <0 5 <05 <0 5 <0 5 <2 5 -- No FP,No S <br /> 3/16/2001 — 1455 3703 -2248 <50 - <05 <0 5 <0 5 <0 5 <2 0[4] -- No FP,No S <br /> 6/29/2001 -- 1455 3970 -2515 <50 -- <0 5 <05 <0 5 <0 5 <2 0[4] — No FP,No S <br /> 9/13/2001 — 1455 4540 -3085 <50 -- <0 5 <05 <0 5 <0 5 <2 0(4] INo FP,No S <br /> 12J1 1/2001 — 1455 4281 -2826 <50 -- <0 50 <0 50 <0 50 <0 50 <2 0[4) INo FP,No S <br /> 3/14/2002 — 1455 3976 -2521 <50 -- <0 50 <050 <0 50 <0 50 <0 50[4] — No FP,No S <br /> 6/19/2002 — 1455 4197 -2742 <50 — <0 50 <050 <0 50 <0 50 <0 50[4) — No FP No S <br /> 9/12/2002 — 1455 4878 -3423 <50 <05 <05 <0 5 <0 5 <05 -- No FP,No S <br /> 12/312002 — 1455 4597 -3142 <50 -- <0 5 <0 5 <0 5 <0 5 <0 5 -- No FP No S <br /> 03/11/2003 P 14 55 4639 -3184 <50 - <0 50 <0 50 <0 50 <0 50 <0 50[4] 1 <br /> 06/09/2003 P 1455 4318 -2863 <50 -- <0 50 <0 50 <0 50 <0 50 <0 50[4] 3 8 <br /> 09/16/2003 P 14 55 5086 -3631 <50 -- <0 50 <0 50 <0 50 <0 50 <0 50[4] 148 <br /> 12/11/2003 P 1455 4620 -3165 <50 -- <0 50 <050 <0 50 084 0 81[4] -- <br /> 03110l2004 P 14 55 1 4654 -3199 1 <50 — <0 50 1 <0 50 <0 50 1 <050 <0 50[4] 196 <br /> 06117/2OD41 P 1453 1 4762 1 -3309 1 <50 1 1 <0 50 1 <050 <0 50 <050 <0 50[4] 2 5 <br /> MW-4 11/20/1997 — 1383 4836 -3453 89 -- 1 11 063 2 11 -- No FP,No S <br /> 2/17/1998 — 1383 4355 -2972 180 -- 057 <0 5 <0 5 059 29 -- No FP,No S <br /> 6/24/1998 -- 1383 3506 -2123 <50 -- <0 5 <0 5 <05 <0 5 162 -- No FP,No S <br /> 9/21/1998 -- 1383 3867 -2484 131 — <0 5 <0 5 115 167 262 — No FP No S <br /> 12/14/1998 — 1383 3661 -2278 136 — 108 <0 5 <0 5 <0 5 291 -- No FP No S <br /> 3/31/1999 -- 1383 3385 -2002 <50 — <05 <0 5 <0 5 <0 5 796 -- No FP,No S <br /> 6/11/1999 — 1383 3347 -1964 194 -- <05 <0 5 <0 5 <0 5 41 — No FP, No S <br /> 9/10/1999 - 1383 3772 -2389 213 148 <05 <0 5 <0 5 1,100 — No FP, No S <br /> 12/3/1999 1383 3764 -2381 641 - <0 5 <05 <0 5 <0 5 731 -- No FP,No S <br /> 413!2000 -- 1383 3430 -2047 <50 -- <0 5 <05 <0 5 <0 5 166 -- No FP,No S <br /> 6122!2000 - 1383 3437 -2054 232 — <2 0 <20 <2 0 <20 2,070[4] — No FP No S <br /> 9/27/2000 -- 1383 3980 -2597 185 -- 1 6 <05 0 542 117 6 590[4] — No FP,No S <br /> 10/19/2000 -- 1383 3959 -2576 NA NA NA NA NA NA — Not observed <br /> 12/20/2000 — 1383 3768 -2385 <50 — <0 5 <0 5 <0 5 <0 5 1,170 — INo FP,No S <br /> 3/16/2001 - 1383 3650 -2267 <50 - <0 5 <0 5 <0 5 <0 5 481[4] — No FP No S <br /> 6/21/2001 — 1383 3937 -2554 <50 -- <0 5 <0 5 <0 5 <0 5 590[4] — No FP, No S <br /> 9/13/2001 -- 1383 4512 -31 29 150 — <0 5 <0 5 <05 <0 5 7 600[4) — No FP No S <br /> Report Date August Z 2004 Page 4 of 11 <br />