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0 <br /> 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 TPI-Id Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (pg1L) (pg/L) (j1g/L) (pg/L) (pg/L) (ug1L) (pg/L) (mg/L) Comments <br /> VW-4 9/28/2000 - 28.39 - - -- - -- - - - -- No FP,No S, No O Not <br /> scheduled for sampling <br /> 12/18/2000 -- - 26.19 - - - - - - -- -- -- No FP,No S.No O Not <br /> scheduled for sampling <br /> 3/14/2001 - - 24.87 - - - -- - - - -- - No FP,No S, No O Not <br /> scheduled for sampling <br /> 6/19/2001 - -- 26.28 -- - - -- -- - - No FP,No S,No O Not <br /> scheduled for sampling <br /> 9/11/2001 -- - 29.13 - - - -- - - -- - No FP,No S,No O Not <br /> scheduled for sampling <br /> 12/13/20011 NP -- 28.50 -- <50 - <0.50 <0.50 <0.50 <0.50 100[2] - No FP,No S,No O <br /> 3/12/2002 NP - 26.10 - <50 - <0.50 <0.50 <0.50 <0.50 32[2] INo FP,No S,No O <br /> 6197!2002 NP - 27.74 - 59[3] -- <0.50 <0.50 <0.50 <0,50 98[2] - No FP,No S,No O <br /> 9/9/2002 NP -- 30.28 - 73 -- <0.5 <0.5 <0.5 <0.5 110 - No FP,No S,No O <br /> 12/4/2002 NP - 27,51 94 <0.5 1.8 0.53 23 39 -- No FP,No S,No O <br /> 03/03/2003 NP - 26.25 - <50 - <0.50 <0.50 <0.50 <0.50 0.88[2] - <br /> 06/03/2003 NP -- 26.13 -- <50 -- <0.50 <0.50 <0.50 <0.50 0.95[2] -- <br /> 09/18/2003 NP -- 29.69 - <50 - <Q.50 <0.50 <0.50 <0.50 50[2] -- <br /> Z��-yam 12/08/2003 NP - 30.76 - <50 - <0.50 <0.50 <0.50 <0.50 6.4[2) -- <br /> 03/11/2004 NP -- 27.03 <50 -- <0.50 <0.50 <0,50 <0.50 <0.50 -- <br /> VW-51D 12/30/1998 -- -- - - -- -- -- -- -- -- - Inaccessible because of <br /> soil stockpiles <br /> 3/31/1999 -- - 25.65 -- - - -- - -- - No FP,Yes S,Yes O Not <br /> scheduled for sampling <br /> 6/28/1999 -- -- 26.74 - -- - - -- - -- - - No FP,No S,No O Not <br /> scheduled for sampling <br /> 9/10/1999 - - 29.00 -- - - - -- -- - - - No FP,No S,No O Not <br /> scheduled for sampling <br /> 12/13/1999 - 28.20 - - -- - - -- No FP,No S,No O Not <br /> scheduled for sampling <br /> 3/28/2000 -- -- 24.97 - -- - - - -- -- - No FP,No S,No O Not <br /> scheduled for sampling <br /> 6/26/2000 - -- 29.81 -- - -- - -- - -- - No FP,No S,No O Not <br /> scheduled for sampling <br /> 9/28/2000 -- 28.31 - -- -- -- - - - - No FP,No S,No O Not <br /> scheduled for sampling <br /> Report Date:May 17, 2004 <br /> Page 11 of 14 <br />