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� s s <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) (erg/L) (pg1L) (pg1L) (pglL) WIL) (gg/L) (pgIL) (mg/L) Comments <br /> MW-5 8/28/1992 -- — -- — 380 — 61 18 27 48 NA No FP,No S <br /> 9/15/1992 -- 1510 6495 -5003 NA -- NA NA NA NA NA — No FP,No S <br /> 10/6/1992 -- 1510 6510 -5019 460 -- 59 34 21 45 NA No FP,No S <br /> 11/11/1992 -- 1510 6440 -4950 NA -- NA NA NA NA NA - No FP,No S <br /> 12/4/1992 -- 1510 6367 -4877 NA — NA NA NA NA NA — No FP,No S <br /> 1/20/1993 -- 1510 6239 -4750 79 — 92 1 3 <0 5 42 NA — No FP,No S <br /> 3/22/1993 — 1510 6051 -4560 NA -- NA NA NA NA NA — No FP No S <br /> 4/6/1993 -- 1510 6001 -4508 1,600 — 260 150 12 230 NA — No FP No S <br /> 7/30/1993 — 1510 6075 -4579 790 — 160 88 19 71 NA - No FP,No S <br /> 11/29/1993 -- 1510 5977 4486 9,600 — 1,900 870 140 1,300 NA — No FP,No S <br /> 3/23/1994 — 1510 -- — .- _ _ -- _ — _ -- Well Inaccessible,No FP, <br /> No S <br /> 6/22/1994 — 1510 — - _ _ _ _ _ _ _ -- Well Inaccessible,No FP <br /> No S <br /> 9/28/1994 1510 -- _ _ _ _ -- _ _ _ - Well Inaccessible,No FP, <br /> No S <br /> 101111/1994 -- 1510 6877 4367 89 -- 21 22 1 8 51 NA — No FP,No S <br /> 12/1/1994 -- 1510 5770 4260 870 -- 280 23 41 87 NA — No FP No S <br /> 2/28/1995 -- 1510 5478 -3968 310 — 70 14 59 5 NA -- No FP,No S <br /> 5/19/1995 -- 1510 5285 -3775 66 - 84 <05 0 5 <0 5 NA — No FP No S <br /> 8/28/1995 -- 1510 5461 -3951 130 27 <05 4 5 0 6 NA No FP,No S <br /> 1217/1995 -- 1510 5320 -3810 <200** -- 21 <05 07 <0 5 NA No FP No S <br /> 2/5/1996 — 1510 5067 -3557 <200" -- 3 <05 09 <0 5 NA — No FP,No S <br /> 5/30/1996 — 1510 4770 -3260 140*** -- 15 <05 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*** — 32 <0 5 16 3 <W* — 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 /> 11/19/1997 -- 1510 4662 -31 52 <50 12 094 <05 091 <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 4144 -2634 <50 -- 132 <05 139 0 535 515 - <br /> 12/2/1998 — 1510 3874 -2364 <50 -- 0 693 <05 <0 5 <05 894 -- <br /> Report Date May 12,2004 Page 9 of 19 <br />