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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) (Yg1L) (pg1L) WIL) (pg/L) (pglL) (pglL) (Vg1L) (mglL) Comments <br /> MW-3 3/22/1993 1610 61 57 4547 NA -- NA NA NA NA NA — No FP, No S <br /> 4/6/1993 — 1610 6108 4498 200 — 3 <05 <0 5 27 NA — No FP, No S <br /> 7/30/1993 -- 1610 61 82 4572 89 - 1 5 <0 5 <0 5 <0 5 NA -- No FP,No S <br /> 11/29/1993 1610 6083 4473 120 -- 51 <05 <0 5 19 NA -- No FP No S <br /> 3/23/1994 - 1610 5591 3981 580 — 24 15 29 14 NA -- No FP, No S <br /> 6/22/1994 — 1610 5602 3992 <10 — 03 <0 3 <0 3 <0 5 NA — No FP No S <br /> 9/28/1994 — 1610 5992 4362 <50 — 07 <05 <0 5 <0 5 NA -- No FP, No S <br /> 12/1/1994 -- 1610 5880 -4270 <50 — 0 8 <0 5 <0 5 <0 5 NA — No FP,No S <br /> 2/28/1995 -- 1610 5588 -3978 73 -- 07 <05 <0 5 <0 5 NA INo FP,No S <br /> 5/19/1995 — 1610 5394 -3784 52"' — <0 5 <05 <05 <0 5 NA — No FP,No S <br /> 8/28/1995 — 1610 5564 -3954 <50 -- <0 5 <05 <0 5 <0 5 NA No FP,No S <br /> 12/7/1995 1610 5430 -3820 <50 — <0 5 <05 <05 <0 5 NA — No FP No S <br /> 2/5/1996 - 1610 5173 -3563 <50 — <0 5 <05 <05 <05 NA -- No FP,No S <br /> 5/30/1996 — 1610 4879 -3269 <50 — <0 5 <05 <0 5 <0 5 <3 -- No FP,No S <br /> 9/18/1996 - 1610 5273 -3663 <50 — <0 5 <0 5 <0 5 <0 5 <3 No FP No S <br /> 11/26/1996 - 1610 5041 -3431 <50 -- 19 <05 <0 5 <05 <3 -- No FP No S <br /> 3/24/1997 — 1610 4529 -2919 <50 — <0 5 <05 <0 5 <0 5 <3 - No FP,No S <br /> 5/20/1997 -- 1610 4593 -2983 <50 — <0 5 <0 5 <0 5 <05 <3 - No FP,No S <br /> 8/19/1997 — 1610 4956 -3346 <50 — <0 5 <05 <0 5 <05 <5 — No FP,No S <br /> 11/19/1997 1610 4762 -31 52 <50 — 1 3 11 <0 5 083 <5 - <br /> 3/4/1998 1610 4295 -2685 <50 -- <0 5 <05 <0 5 <0 5 <5 No FP No S <br /> 6/26/1998 -- 1610 4067 -2457 <50 — <0 5 <05 <0 5 <0 5 <5 -- <br /> 9/1/1998 -- 1610 4250 -2640 716 — <0 5 <05 <0 5 <05 <5 - <br /> 12I211998 -- 1610 3975 -2365 <50 - <0 5 <05 <0 5 <05 <5 — <br /> 3/31/1999 1610 3617 -2007 <50 — 054 <05 <0 5 <05 <5 <br /> 6/4/1999 -- 1610 3756 -2146 102 — 0 569 <0 5 445 0 885 <5 — <br /> 9/2/1999 -- 1610 4216 -2606 <50 — <0 5 <05 <0 5 <05 <5 — <br /> 11/29/1999 — 1610 4024 -2414 <50 — <0 5 <05 <0 5 <05 <25 — <br /> 3/16/2000 — 1610 3621 -2011 <50 <0 5 1 <05 <0 5 <05 <2 5 - <br /> 6/26/2000 1610 3889 -2279 <50 - <0 5 <05 <05 <05 <2[2] - <br /> 9/28/2000 — 1610 4314 -27 04 59 3[3] -- <05 <0 5 <05 <0 5 <2[2] w <br /> 12/19/2000 — 1610 3872 -2262 <50 — <05 <0 5 <0 5 <0 5 <2 5 — <br /> 3/15/2001 — 1610 3653 -2043 <50 <2[4] <2[4] <2[4] <2[4] <2[2] -- <br /> Report Date May 12, 2004 Page 6 of 19 <br />