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0 <br /> Table I <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station No 2186 <br /> 3212 N California 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) (pg/L) (pglL) (pg1L) (pglL) (pg/L) (pg/L) WIL) (mg/L) Comments <br /> MW-3 12/14/1998 -- 1455 3714 -2259 <50 -- <0 5 <05 <0 5 <0 5 <50 — No FP,No S <br /> 3/31/1999 — 1455 3422 -1967 <50 — <05 <05 <05 <05 <5 0 — No FP,No S <br /> 6/11/1999 — 1455 3401 -1946 <50 — <0 5 <05 <0 5 <0 5 <50 No FP,No S <br /> 9/1011999 -- 1455 3810 -2355 <50 — <0 5 <0 5 <0 5 <0 5 <50 — No FP,No S <br /> 12/3/1999 — 1455 3812 -2357 <60 — <0 5 <0 5 <0 5 <0 5 <25 -- No FP,No S <br /> 4!312000 — 1455 3485 -2030 <50 — <05 <0 5 <0 5 <0 5 <50 — No FP,No S <br /> 6122!2000 — 1455 3490 -2035 <50 — <20 <2 0 <2 0 <2 0 <2 0[41 -- No FP,No S <br /> 9/27/2000 -- 1455 4007 -2552 <50 — <0 5 <05 <05 <0 5 4 98[41 — No FP,No S <br /> 10/19/2000 — 1455 3996 -2541 NA — NA NA NA NA NA — Not observed <br /> 12/20/2000 -- 1455 3811 -2356 <50 -- <0 5 <0 5 <0 5 <0 5 <25 -- No FP No S <br /> 3/16/2001 — 1455 3703 -2248 <50 -- <0 5 <0 5 <0 5 <05 <2 0[4] INo FP,No S <br /> 6/21/2001 — 1455 3970 -2515 <50 — <0 5 <0 5 <0 5 <0 5 <2 0[41 — No FP, No S <br /> 9/13/2001 — 1455 4540 -3085 <50 — <0 5 <0 5 <0 5 <0 5 <2 0[4] -- No FP,No S <br /> 12/11/2001 — 1455 4281 -2826 <50 — <050 <0 50 <050 <0 50 <2 0[4] -- No FP No S <br /> 3/14/2002 — 1455 3976 -2521 <50 — <0 50 <0 50 <050 <0 50 <0 50[41 — No FP,No S <br /> 6/19/2002 — 1455 4197 -2742 <50 — <0 50 <0 50 <050 <0 50 <0 50[4] — No FP No S <br /> 9/12/2002 — 1455 4878 -3423 <50 — <05 <0 5 <0 5 <0 5 <0 5 — No FP No S <br /> 12/312002 — 1455 4597 -31 42 <50 — <0 5 <05 <0 5 <0 5 <0 5 — No FP,No S <br /> 03/11/2003 P 1455 4639 -31 84 <50 — <0 50 <0 50 <0 50 <0 50 <0 50[4] 096 <br /> 06/09/2003 P 1455 4318 -2863 <50 — <0 50 <0 50 <0 50 <0 50 <0 50[41 380 <br /> 09/16/2003 P 1455 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 <0 50 <0 50 084 0 81[4] -- <br /> 03/10/2004 P 1455 4654 -3199 <50 — <0-50-- <0 50 <0 50 <0 50 <0 50[4] 196 <br /> 06/17/2004 P 1453 4762 -3309 <50 — <0 50 <0 50 <0 50 <050 <0 50[4] 250 <br /> 09/23/2004 P 1453 5385 -3932 <50 — <0 50 <0 50 <0 50 <0 50 <0 50[41 460 <br /> 12/21/2004 P 1453 4862 -3409 <50 -- <0 50 <0 50 <0 50 <0 50 <0 50[4] 420 <br /> 03/30/2005 P 1453 4445 -2992 <50 — <0 50 <0 50 1 <0 50 <0 50 <0 50[4] 1 586 <br /> 06/1312005 P 1453 4245 -2792 <50 — <0 50 <0 50 1 <0 50 o 50 <0 50[4] 349 <br /> MW4 11/20/1997 — 1383 4836 -3453 89 — 1 1 1 063 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 — <05 <0 5 <0 5 <0 5 162 -- No FP,No S <br /> 9/21/1998 — 1383 3867 -2484 131 — <05 <0 5 115 167 262 — No FP,No S <br /> 12x14/1998 — 1383 1 3661 k -2278 1 136 — 108 1 <0 5 f <0 5 1 <0 5 1 291 — No FP,No S <br /> Report Date July 21,2005 Page 4 of 13 <br />