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• • � vJ <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 TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (pg/L) (P91-) (Ng1L) (pg1L) (Pg1L) (Pg1L) (P91L) (mg1L) Comments <br /> VW-4 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 - <0.50 <0.50 <0.50 <0.50 50[2] - <br /> 12/08/2003 NP -- 30.76 - <50 <0.50 <0.50 <0.50 <0.50 6.4[2] - <br /> 63/11/2004 NP - 27.03 - <50 -- <0.50 <0.50 <0.50 <0.50 <0.50[2]106/11/2004 NP - 31.03 -- <50 -- <0.50 <0.50 <0.50 <0.50 1.1[2] 1.6 <br /> 08/03/2004 P 32.45 -- 62 -- <0.50 <0.50 <0.50 <0.50 55[2] <br /> VW-5D 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 0 Not <br /> scheduled for sampling <br /> 9/10/1999 - - 29.00 -- -- - -- -- - _ No FP,No S,No 0 Not <br /> scheduled for sampling <br /> 12/13/1999 -- - 28.20 -- - -- -- - - - - - No FP,No S, No 0 Not <br /> scheduled for sampling <br /> 3/28/2000 - -- 24.97 - - - - -- - - -- -- No FP,No S,No 0 Not <br /> scheduled for sampling <br /> 6/26/2000 -- -- 29.81 -- -- - -- -- -- - - No FP,No S,No 0 Not <br /> scheduled for sampling <br /> 9/28/2000 - - 28.31 -- - -- - - - -- -- No FP,No S,No O Not <br /> scheduled for sampling <br /> -- - -- -- - -- - _ _ -- Yes FP,Yes S.Yes O <br /> 12!18!2000 <br /> Not scheduled for <br /> sampling <br /> 3/14/2001 -- - 25.00 - - -- - - - -- -- - Yes FP Not scheduled for <br /> sampling <br /> 6/19/2001 - - 24.95 -- - -- -- - -- -- - - No FP,No S,Yes O Not <br /> scheduled for sampling <br /> 9/11/2001 - -- 28.00 - -- _ - -- - -- -- - No FP,No S,Yes O Not <br /> scheduled for sampling <br /> 12/13/2001 NP - 28.42 -- 54,000 - 840 2,300 1,100 17,000 67[2) -- No FP,No S, No O <br /> 3/12/2002 NIP I 25.65 1 1,400[3] - <5.0 8 <5.0 96 <2.5[2][5] - No FP,No S,No O <br /> Report Date:August 13,2004 Page i2 of 15 <br />