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TO • <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 ms I) (uglL) 4,g/L) Ug/L) (pg/L) (}rg/L) WL) (Erg/L) (mg/L) Comments <br /> MW 1 1/20/1993 1458 6183 4725 1,800 260 100 10 34 NA No FP,No S <br /> 3/22/1993 1458 5995 4537 NA NA NA NA NA NA No FP,No S <br /> 4/6/1993 1458 5947 -4489 1,500 250 64 30 76 NA No FP,No S <br /> 7/30/1993 1458 6019 -4561 2,100 390 130 38 79 NA -- No FP, No S <br /> 11/29/1993 1458 5929 -4471 1,200 230 12 11 16 NA INo FP No S <br /> 3/23/1994 1458 5433 3975 1,900 120 82 25 7 5 NA No FP,No S <br /> 6/22/1994 1458 5411 3988 910 13 4 41 1 9 NA No FP No S <br /> 9/28/1994 1458 5817 4359 420 6 8 14 2 9 <0 5 NA No FP, No S <br /> 12/1/1994 1458 5711 4253 220 I 24 <0 5 <0 5 <0 5 NA No FP, No S <br /> 2/28/1995 1458 5421 -3963 340 21 <0 5 0 6 <0 5 NA No FP, No S <br /> 5/19/1995 1458 5241 -3783 210 2 9 <0 5 0 7 <0 5 NA No FP No S <br /> 8/28/1995 1458 5404 -3946 240 3 2 <0 5 1 <0 5 NA No FP, No S <br /> 12/7/1995 1458 5267 -3809 190 1 7 <0 5 <0 5 <0 5 NA No FP, No S <br /> 2/5/1996 1458 50 11 -3553 230 2 5 <0 5 05 <0 5 NA No FP No S <br /> 5/30/1996 1458 4717 3259 180— 1 2 <0 5 <0 5 <0 5 <4" No FP, No S <br /> 9/18/1996 1458 5096 3638 200 1 6 <05 <05 <0 5 <5'" No FP, No S <br /> 11/26/1996 1458 4880 -3422 220 1 5 <05 <0 5 <0 5 5 No FP, No S <br /> 3/24/1997 1458 4373 -2915 <50 <0 5 <05 <05 <0 5 <3 No FP, No S <br /> 5/20/1997 1458 4432 -2974 230 <7" <0 6- <05 05 <5" No FP, No S <br /> 8/19/1997 1458 4778 -3320 200 65 <0 5 <0 5 <0 5 <5 - No FP, No S <br /> 11/19/1997 - 1458 4595 3137 170 7 077 <0 5 063 <5 <br /> 3/4/1998 1458 41 33 2675 <50 0 51 <0 5 <0 5 <0 5 <5 No FP,No S <br /> 6/26/1998 1458 3913 2455 248 173 <0 5 <0 5 <05 <5 <br /> 9/1/1998 14 5B 4089 -2631 249 519 <05 <0 5 <05 <5 - <br /> 12/2/1998 1458 3820 -2362 227 <0 5 <05 <0 5 <05 127 <br /> 3/31/1999 1458 3468 -2010 152 <0 5 <05 <0 5 <05 <5 - <br /> 6/4/1999 1458 3598 21 40 168 263 <0 5 <05 <0 5 109 <br /> 9/2/1999 1458 4049 2591 232 104 <0 5 <0 5 <0 5 <5 <br /> 11/29/1999 1458 3864 2406 129 <0 5 <0 5 <0 5 <0 5 <2 5 <br /> 3/16/2000 1458 3466 -2008 552 <0 5 <0 5 <05 <0 5 <2 5 <br /> 6/26/2000 1458 3726 -2268 175 <0 5 <0 5 <0 5 <0 5 <2[2] <br /> 9/28/2000 - 1458 41 49 2691 86 9[3] 214 <0 5 <0 5 <0 5 <2[2] <br /> 12/19/2000 - 1458 3717 -2259 <50 <0 5 <0 5 <0 5 <0 5 <2 5 <br /> i <br /> Report Date January 25,2006 Page 4 of 25 <br />