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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 TPI-Ig TPHd Benzene Toluene benzene Xylenes MtBE DO
<br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (pglL) Wg1L) Wg/L) Wa/L) (pg1L) (pg1L) WIL) (mg/L) Comments
<br /> VW-2 12/30/1998 NP - 27.47 -- 8,950 -- 778 <20 1,180 339 <200 -- No FP,No S,Yes O,[41]
<br /> 3/31/1999 -- -- 25.21 -- -- - -- -- -- -- -- -- No FP.No S,No O Not
<br /> scheduled for sampling
<br /> 6/28/1999 - - 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 /> 3/14/2001 -- 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 /> 9/11/2001 - - 29.40 -- -- w -- -- - -- -- -- No FP,No S,No O Not
<br /> scheduled for sampling
<br /> 112113/2001 NP I -- 28.75 - 180[3] - 2.6 <0.50 <0.50 <0.50 1.5[2] - No FP,No S,No O
<br /> 3/12/2002 NP -- 26.48 - <50 - <0.50 <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 <0.50 <0.50 <0.50 <0.50[2) -- No FP,No S, No O
<br /> 9/9/2002 NP -- 30.75 -- 200 - 2.3 0.77 <0.5 <0.5 4.4 - No FP,No S, No O
<br /> 12/4/2002 NP -- 30.25 - 770 - 18 <0.5 <0.5 <0.5 5.4 -- No FP,No S, No O
<br /> 03/03/2003 NP 28.88 - <100 -- <1.0 <1.0 <1.0 <1.0 <1.0[2] --
<br /> 06/03/2003 NP -- 28.64 -- <50 - <0.50 <0.50 <0.50 <0.50 c0.50[2] -
<br /> 09/18/2003 NP - 32.20 - 380 - <5.0 <5.0 <5.0 <5.0 <5.0[2] --
<br /> 12l08/2003 NP -- 32.01 -- 490 - <5.0 <5.0 <5.0 <5.0 5.0[2] -
<br /> 03/11/2004 NP - 28.61 - 290 _ <5.0 <5.0 <5.0 <5.0 <5.0[2] -
<br /> 06/11/2004 NP -- 31.30 -- <50 - <0.50 <0.50 <0.50 <0.50 <0.50[2] Z,0
<br /> VW-3 9/29/1998 NP 29.45 -- 39,300 - 2,360 391 1,540 1 9,790 <500 - INo FP,No S,Yes O,[46-]-
<br /> 12/30/1998 NP -- 27.28 - 40,500 - 3,450 287 2,370 1 11,700 j <500 - No FP,No S,Yes O,[40]
<br /> Report Date:July 26,2004 Page 9 of 15
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