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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 Pl Elevation Water Elevation TPH9 TPHd Benzene Toluene benzene Xylenes MtBE DO
<br /> Number Sampled NP (feet 02 msl) (feet bgs) (feet msl) (ug1L) (ug1L) (ug1L) WL) (Irg1L) (ugIL) (ug1L) (mglL) Comments
<br /> MW-6 12/4/20P 8.95 28.86 -19.91 <50 - <0.5 <0.5 <0.5 <0.5 <0.5 -- No FP,No S,No O
<br /> 03/03/2003 P 8.95 29.04 -20.09 <50 _ <0.50 <0.50 <0.50 <0.50 <0.50121 3.86
<br /> 06!0312003 P 8.95 29.00 -20.05 <50 - <0.50 <0.50 <0.50 <0.50 <0.50[2] 5.1
<br /> 09/18/2003 8.95 -- - -- - -- - -- - Not Sampled
<br /> --
<br /> 12108!2003 P 8.95 30.52 -21.57 <50 -- <0.50 <0.50 <0.50 <0.50 <0.50[2] -
<br /> 03/11/2004 P 8.95 30.43 -21.48 <50 - <0.50 <0.50 <0.50 <0.50 <0.50[2] 1.11
<br /> 06/1112004 P 8.95 29.50 20.55 <50 - <0,50 <6.50 <0.50 <0.50 <0.50[2] 2.6
<br /> 08/03/2004 P 8.55 30.97 -22.02 78 - <0.50 <0.50 <0.50 <0.50 <0.50[2] 1.9
<br /> vW-1 9!2911998 NP -- 28.73 - 18,800 - 573 59 873 4,120 2,300 -- No FP,No S,Yes O,[43]
<br /> 12130/1998 NP - 26.50 -- 19,200 -- 2,150 <50 691 3,310 785 -- No FP,No S,Yes O,143]
<br /> 3/31/1999 - - 24.97 - -- -- - -- -- - -- - No FP,No S,No 0 Not
<br /> scheduled for sampling
<br /> 6128!1999 - - 25.99 - - - - - - - No FP,No S,No 0 Not
<br /> scheduled for sampling
<br /> 9/10/1999 28.33 -- -- - - -- - - - No FP,No S,No 0 Not
<br /> scheduled for sampling
<br /> 12/13/1999 -- - 27.46 - - -- - - -- - -- -- No FP,No S,No 0 Not
<br /> scheduled for sampling
<br /> 3l28/2D00 -- 24.23 - - -- -- -- - -- 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 0 Not
<br /> scheduled for sampling
<br /> 1211812000 -- 25.50 - -- - - -- -- -- -- - No FP,No S,No 0 Not
<br /> scheduled for sampling
<br /> 3!1412001 - - 24.33 - -- -- -- - - - - No FP, ed o sampling O Not
<br /> scheduled for sampling
<br /> 6/19/2001 - - 25.50 - - - - - -- -- -- No FP,No S,No O 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 - <50 - 2.5 <0.50 <0.50 <0.50 87[2] -- No FP,No 5,No O
<br /> 3/12/2002 NP -- 25.20 - <50 - <0.50 <0.50 <0.50 <0.50 0.68[2] - No FP,No S,No 0
<br /> 6/17/2002 NP - 26.95 -- <50 -- <0.50 <0.50 <0.50 <0.50 7.8[2] -- No FP,No S,No O
<br /> 9/9/2002 NP -- 29.54 _ <50 - 0.55 <0.5 <0.5 <0.5 60 -- No FP,No 5,No O
<br /> Report Date:August 13,2004 Page 8 of 15
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