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Table 2 <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 /> Well Date P/ Elevation Water Elevation TPHg TPI-id 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) (pgfL) (mg/L) Comments <br /> vW-1 12/13/1999 -- - 27.46 -- -- <br /> -- -- - -- -- No FP, No S, No O Not <br /> 3/28/2000 -- -- 24.23 scheduled for sampling <br /> -- -- " -- - No FP, No S, No 0 Not <br /> scheduled for sampling <br /> 6/26/2000 -- - 25.11 -- -- -- -- - -- -- -- -- No FP, No S, No 0 Not <br /> scheduled for sampling <br /> 9/28/2000 - -- 27.72 - -- -- -- -- -- -- - - No FP, No S, No O Not _ <br /> scheduled for sampling <br /> 12/18/2000 -- -- 25.50 - -- -- - __ -_ __ __ - No FP, No S, No O Not <br /> scheduled for sampling <br /> 3/14/2001 - - 24.33 - -- - -- -- -- - -- No FP, No S, No O Not <br /> scheduled for sampling <br /> 6/19/2001 - -- 25.50 -- -- -- - -- -- - -- -- No FP, No S, No 0 Not <br /> scheduled for sampling <br /> 9/11 /2001 -- - 26.28 -- -- -- -- - -- - -- - No FP, No S, No O Not <br /> scheduled for sampling <br /> 12/13/2001 NP - 27.74 - 1310 <br /> -- 2.5 <0.50 <0.50 <0.50 87[2] -- No FP, Na S, Na O <br /> 3/12/2002 NP -- 25.20 -- - <0.50 <0.50 <0.50 <0.50 0.68[2] No FP, No S, No O <br /> 6/17/2002 NP - 26.95 -- -- <0.50 <0.50 <0.50 <0.50 7.8[2] -- No FP, No S, No 0 <br /> 9/9/2002 NP -- 29.54 - - 0.55 <0.5 <0.5 <0.5 60 - No FP, No S, No O <br /> 12/4/2002 NP -- 29.64 - 14 0.59 1 .1 6.1 97 -- No FP, No S, No 0 <br /> 03/03/2003 NP -- 28.77 -- 0 - <1 .0 <1 .0 <1 .0 <1 .0 30[2]06/03/2003 NP - 2851 -- - <0.50 <0.50 <0.50 <0.50 22[2] -- <br /> 09/18/2003 NP -- 32.03 - 250 -- 23 <2.5 <2.5 2.6 120[2] -- y <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 /> 05/03/2004 NP - 27.96 -- <50 -- <0.50 <0.50 <0.50 <0.50 4.1 [2] <br /> VW-2 9/29/1998 NP -- 29.01 -- 13,200 -- 822 <12.5 1 ,370 754 <125 -- No FP, No S, Yes O, [41 ] <br /> 12/30/1998 NP -- 27.47 -- 81950 -- 778 <20 11180 339 <200 -- No FP, No S, Yes O, [41 ] <br /> 3/31 /1999 -- -- 25.21 -- -- -- -- -- -- - -- -- No FP, No S, No 0 Not <br /> scheduled for sampling <br /> 6/28/1999 -- -- 26.35 -- - -- -- -- - - -- - No FP, No S, No 0 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 0 Not <br /> scheduled for sampling <br /> Report Date: May 13, 2004 Page 8 of 14 <br />