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'v <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 TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (uglL) (pg/L) (pg1L) (l1g1L) (pg1L) (prg1L) (pg/L) (mg1L) Comments <br /> MW-2 6/4/1999 — 1619 3667 -2148 184 -- 119 <05 103 0 669 126 - <br /> 9/2/1999 -- 1519 4123 -2604 4,820 — 764 <10 375 <10 191 -- <br /> 11/29/1999 -- 1519 3936 -2417 791 -- 425 <05 <05 114 654 — <br /> 3/16/2000 -- 1519 3539 -2020 <50 — <05 <05 <05 <05 289 — <br /> 6/26/2000 -- 1519 3799 -2280 435 -- 33 0 588 122 206 6 3[2] -- <br /> 9/28/2000 — 1519 4224 -2705 165[3] — 658 <0 5 0 618 0 669 3 62[2] -- <br /> 12/19/2000 -- 1519 3792 -2273 <50 — <0 5 <0 5 <0 5 <0 5 <25 -- <br /> 3/15/2001 — 1519 3573 -2054 <50 - <2[4] <2[4] <2[4] <2[4] <2[2] — <br /> 6/20/2001 — 1519 3899 -2380 <50 - <2[4] <2[4] <2[4] <2[4] <2[21 — <br /> 9/12/2001 -- 1519 4329 -2810 <50 — <2[4] <2[4] <2[4] <2[4] <2[21 - <br /> 12/12/2001 -- 1519 4020 -2501 <50 — <1 0[4] <1 0[4] <1 0[4] <1 0[4) 1 2[21 - <br /> 3/13/2002 — 1519 3721 -2202 <50 — 062 <0 50 <0 50 <0 50 2 5[2] -- <br /> 6/18/2002 - 1519 3738 -2219 <50 - 1 5 <0 50 <0 50 17 26121 -- <br /> 9/11/2002 - 1519 4449 -2930 <50 -- 1 1 <0 50 <0 50 <0 50 3 0[2] — <br /> 12/18/2002 1519 4194 -2675 <50 — <0 50 <0 50 <0 50 <0 50 2 5[21 -- <br /> 03/06/2003 P 1519 3955 -2436 <50 — <0 50 <0 50 <0 50 <0 50 0 60[2] 1 96 <br /> 06/11/2003 P 1519 3899 -2380 <50 -- <0 50 <0 50 <0 50 <0 50 <0 50[2] 2 66 <br /> 09/23/2003 P 1519 4297 -2778 <50 <0 50 <0 50 <0 50 <0 50 <0 50[2] — <br /> 12/09/2003 P 1519 41 99 -2680 <50 — <0 50 <0 50 <0 50 <0 50 <0 5012] -- <br /> 0310912004 P 1519 3959 -2440 <50 -- <0 50 <0 50 <0 50 <050 <0 50[2] 2 44 <br /> MW-3 1/7/1992 — 1610 6305 4704 2,100 - 41 <30 <3 0 57 NA I -- No FP,No S <br /> 2/24/1992 — 1610 6237 4663 NA - NA NA NA NA NA — INo FP, No S <br /> 3/31/1992 — 1610 6217 4616 NA — NA NA NA NA NA — No FP,No S <br /> 4/21/1992 - 1610 6251 4641 110 -- 4 9 <0 5 <0 5 46 NA No FP,No S <br /> 5/11/1992 — 1610 6317 4707 NA — NA NA NA NA NA No FP, No S <br /> 6/23/1992 - 1610 6326 4716 NA -- NA NA NA NA NA No FP,No S <br /> 7/8/1992 - 1610 6450 4840 55 -- 15 <05 <0 5 12 NA -- No FP,No S <br /> 8/10/1992 — 1610 6543 4933 NA — NA NA NA NA NA -- No FP No S <br /> 9/15/1992 -- 1610 6607 4997 NA -- NA NA NA NA NA — No FP,No S <br /> 10/6/1992 -- 1610 6620 5010 300 -- 5 8 <0 5 <0 5 18 NA -- No FP,No S <br /> 11/11/1992 - 1610 6550 4940 NA -- NA NA NA NA NA -- No FP,No S <br /> 12/4/1992 -- 1610 6423 4815 NA — NA NA NA NA NA - No FP,No S <br /> 1/20/1993 — 1610 6345 4735 420 -- 6 5 0 7 <0 5 4 5 NA -- No FP,No S <br /> Report Date May 12,2004 Page 5 of 19 <br />