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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 /> TOC Depth to Water Level Ethyl- Total <br /> Well Date P/ Elevation Water Elevation TPH9 TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) (mg/L) Comments <br /> MW 5 8/28/1995 1510 5461 3951 130 27 <0 5 4 5 0 6 NA No FP, No S <br /> 12/7/1995 1510 5320 3810 <200** 21 <0 5 0 7 <0 5 NA No FP, No S <br /> 2/5/1996 1510 5067 -3557 <200** 3 <0 5 09 <0 5 NA No FP, No S <br /> 5/30/1996 1510 4770 3260 140*** 15 <0 5 52 <0 5 <4" No FP, No S <br /> 9/18/1996 1510 5156 -3646 <300*** 33 <05 9 <0 5 <3 No FP, No S <br /> 11/26/1996 1510 4934 -3424 <200`** 19 <0 5 05 <0 5 <4*` No FP, No S <br /> 3/24/1997 1510 4424 -2914 <200*** 1 3 2 <0 5 1 6 3 <8** No FP No S <br /> 5/20/1997 1510 4485 2975 270 31 5 5 15 <20** No FP, No S <br /> 8/19/1997 1510 4837 3327 100 20 <0 5 38 <0 5 <5 No FP,No S <br /> 111/19/1997 15 10 4662 -31 52 <50 1 2 094 <0 5 091 <5 <br /> 3/4/1998 1510 4190 -2680 <50 56 1 8 1 6 31 <5 No FP No S <br /> 6/26/1998 1510 3964 -2454 <50 419 0 624 0 794 1 <5 <br /> 9/1/1998 1510 41 44 2634 <50 13 2 <0 5 1 39 0 535 515 <br /> 12/2/1998 1510 3874 2364 <50 0 693 <0 5 <0 5 <0 5 894 <br /> 3/31/1999 1510 3517 2007 <50 1 33 0 586 <0 5 1 52 994 - <br /> 6/4/1999 1510 3648 -21 38 <50 503 0 721 <0 5 1 6 706 <br /> 9/2/1999 1510 41 05 -2595 <50 614 <0 5 1 83 0 848 <5 <br /> 111/29/1999 1510 3916 2406 <50 0 585 0 633 <0 5 1 45 2 69 <br /> 3/16/2000 1510 3516 2006 571 517 <0 5 <0 5 <0 5 493 <br /> 6/26/2000 1510 3780 2270 523 369 <0 5 22 0 825 <2[2] <br /> 9/28/2000 1510 4205 -2695 <50 1 34 <0 5 <0 5 <0 5 <2[2] <br /> 12/19/2000 1510 3768 2258 <50 0 561 1 49 <0 5 3 566 - <br /> 3/15/2001 1510 3550 2040 91 6[3] <2[4] 6 71 [4] <2[4] <2[4] 89 2[2] <br /> 6/20/2001 1510 3882 2372 78(3) 2 5[4] 5 5[4] 4 7[4] 11[4] 60[2] <br /> 9/12/2001 1510 4305 -2795 <50 <2[4] <2[4] <2[4] <2[4] 29[2] <br /> 12/12/2001 1510 3989 -2479 <50 <1 0[4] <1 0[4] <1 0(4] 1 2[4] 25[2] <br /> 3/13/2002 1510 3699 21 89 <50 <0 50 061 <0 50 <0 50 35[2] <br /> 6/18/2002 1510 3919 2409 <50 <0 50 061 <0 50 3 3 7 8[2] <br /> 9/11/2002 1510 4433 2923 63 I 34 5 1 9 14 9 1[2] <br /> 12/18/2002 15 10 41 68 -2658 <50 <0 50 44 <0 50 58 20[2] <br /> 03/06/2003 P 1510 3934 -2424 <50 1 5 1 7 051 32 3 0[2] G56 <br /> 06/11/2003 P 15 10 3868 2358 51 27 55 1 2 84 4 2[2] 267 <br /> 09/23/2003 P 15 10 4270 2760 95 <2 5 25 <2 5 11 6 0[2] - <br /> Report Date January 25,2006 Page 12 of 25 <br />