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Table 1 <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 TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (IfgIL) (pg1L) Uigll..) (pg/L) (ug1L) WIL) (pg/L) (mg/L) 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 /> 06103l2003 NP 28.51 - <50 -- <0.50 <0.50 <0.50 <0.50 22[2] -- <br /> 09l1812003 NP - 32.03 - 250 - 23 <2.5 <2.5 2.6 120[2] -- <br /> 12/08/2003 NPI 31.89 - 170 - 10 <5.0 <5.0 <5.0 120[2] - <br /> 03/11/2004 - - 28.52 - -- - -- -- -- - <br /> - Not Sampled <br /> 05/03/2004 NP - 27.96 - <54 - <0.50 <0.50 <0.50 <0.50 4.1[21 -- <br /> 06/11/2004 NP - 30.28 - 690 -- 20 <2.5 <2.5 4.6 140[2] 1.7 <br /> 0810312004 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 -- No FP, No S,Yes O, [41] <br /> 12!30!1998 NP -- 27.47 - 8,950 - 778 <20 1,180 339 <200 - No FP,No S,Yes O,[41] <br /> 3l31l1999 -- -- 25.21 -- -- -- -- -- -- -- -- -- No FP,No 5,No Q Not <br /> scheduled for sampling <br /> 612811999 - 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 /> 9/28/2000 - -- 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 /> 3114!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 /> 1 211 312 0 0 1 NP - 28.75 -- 180[3] - 2.6 <0.50 <0.50 <0.50 1.5[2] -- No FP,No S,No O <br /> 3112!2002 NP -- 26.48 - <50 - 1 <0.50 L <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 1 <0.50 <0.50 <0.50 <0.50[2] - No FP,Mn S,No O <br /> Report Date:August 13,2004 Page 9 of 15 <br />