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Mir � <br /> Table 4 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station No. 548 <br /> 1612 W. Hammer lane, Stockton, CA <br /> TOC Depth to Water Level Ethyl- Total <br /> WellDate PI Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet ms]) (1ig/L) (ppg1L) MIL) (ug1L) (pglL) (ivglL) (Irg1L) (mg1L) Comments <br /> VW-1 12/4/2002 NP -- 29.64 - 310 -- 14 0.59 1.1 6.1 97 - No FP,No S,No O <br /> 03/03/2003 NP - 28.77 - <100 - <1.0 <1.0 <1.0 <1.0 30[2] - <br /> 06/03/2003 NP - 28.51 - <50 - <0.50 <0.50 <0.50 <0.50 22[2]09/1812003 NP -- 32.03 - 250 -- 23 <2.5 <2.5 2.6 120[2] <br /> 12/08/2003 NP - 31.89 - 170 - 10 <5.0 <5.0 <5.0 120[2] - <br /> 03/11/2004 - - 28.52 - - - -- - -- - -- -- Not Sampled <br /> <50 -- <0.50 <0.50 <0.50 <0.50 4.1[2] <br /> 05!0312004 NP -- 27.96 - -" <br /> 06/11/2004 NP - 30.28 -- 690 - 20 <2.5 <2.5 4.6 140[2] 1.7 <br /> 08/03/2004 P -- 31.71 - 3,600 - 230 <5.0 330 370 280[2] 2.0 <br /> VW-2 9/29/1998 NP - 29.01 - 13,200 -- 822 <12.5 1,370 754 <125 - INo FP, No S,Yes O,(41] <br /> 12/30/1998 NP - 27.47 -- 8,950 - 778 <20 1,180 339 <200 INo FP,No S,Yes O, [41] <br /> 3/31/1999 - - 25.21 - - - -- - -- - - - No FP,No S,No O Not <br /> scheduled for sampling <br /> 6/28/1999 - - 26.35 - - - -- - -- - -- - No FP, No S,No O Not <br /> scheduled for sampling <br /> 9/10/1999 __ - 29.29 - - - _ _ _ _ _ -- No FP,No S,No O Not <br /> scheduled for sampling <br /> 12/13/1999 - - 28.43 - -- - - - - -- - -- No FP, No S,No O Not <br /> scheduled for sampling <br /> 3/28/2000 - - 25.24 - - -- - _ _ _ -- - No FP,No S,No O Not <br /> scheduled for sampling <br /> 6/26/2000 - - 26.10 -- - - -- - -- - - -- No FP, No S,No O Not <br /> scheduled for sampling <br /> 9!2812000 -- -- 28.69 - -- - - -- - - - - No FP,No S,No O Not <br /> scheduled for sampling <br /> 12/18/2000 - - 26.51 - - -- - - - - -- - No FP, No S,No O Not <br /> scheduled for sampling <br /> 3/14/2001 - - 24.40 -- -- - -- - -- - - - No FP,No S,No O Not <br /> scheduled for sampling <br /> 6/19/2001 - - 25.15 - - - - - -- - -- -- No FP,No S,No O Not <br /> scheduled for sampling <br /> 9111/2001 - - 29.40 -- -- - - - - - - No FP,No S,No O Not <br /> scheduled for sampling <br /> 12/13/2001 NP -- 28.75 - 180[3] - 2.6 <0.50 <0.50 <0.50 1.5[2] - No FP,No S,No O <br /> 3/12/2002 NP - 26.48 - <50 - <0.50 <0.50 <0.50 <0.50 <0.50[2] -- No FP,No S,No O <br /> 6/17/2002 NP -- 28.03 - <50 - <0.50 <0.50 <0.50 <0.50 <0.50[2] - No FP, No <br /> Report Date:August 25,2004 Page 9 of 15 <br />