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Table 1
<br /> Groundwater Elevation and Analytical Data
<br /> ARCO Service Station No. 548
<br /> 1812 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 MtSE DO
<br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (pg/L) (pg/L) (pg/L) (frg/L) (pg/L) (pg/L) (Pg/L) (mg/L) Comments
<br /> VW-2 09/09/2005 P -- 31.11 - 560 - 2.5 <1,0 28 33 1.5[2] 0.57
<br /> VW-3 9/29/1998 NP 29.45 -- 39,300 - 2,360 391 1,540 9,790 <500 No FP,No S,Yes O,[40]
<br /> 12/30/1998 NP -- 27.28 - 40,500 3,450 287 2,370 11,700 <500 No FP,No S,Yes O,[40]
<br /> 3/31/1999 - 25.87 -- -- -- -- -- -- -- -- No FP,No S,Na O Not
<br /> scheduled for sampling
<br /> 6/28/1999 -- 26.88 - -- - No FP,No S, No O Not
<br /> scheduled for sampling
<br /> 9/10/1999 - 28.89 - - -- - -- No FP,No S, No O Not
<br /> scheduled for sampling
<br /> 12/13/1999 -- 28.06 -- -- -- -- No FP,No S, No O Not
<br /> scheduled for sampling
<br /> 3/28/2000 24.88 -- -- -- -- No FP, No S,No O Not
<br /> scheduled for sampling
<br /> 6/26/2000 - 29.78 - No FP,No S,No O Not
<br /> scheduled for sampling
<br /> 9/28/2000 - - 28.30 - -- - -- - No FP,No S,No O Not
<br /> scheduled for sampling
<br /> 12/18/2000 -- 26.08 - -- -- - - No FP,No S,No O Not
<br /> scheduled for sampling
<br /> 3/14/2001 -- - 24.20 - -- -- -- -- -- No FP,No S,No O Not
<br /> scheduled for sampling
<br /> 6/19/2001 - 26.50 -- -- -- No FP,No S, No O Not
<br /> scheduled for sampling
<br /> 9/11/2001 29.02 -- - - - -- -- No FP,No S, No O Not
<br /> scheduled for sampling
<br /> 12/13/2001 NP - 28.35 - 1,100 -- 150 <5.0 7.6 16 16[2] -- No FP,No S, No O
<br /> 3/12/2002 NP 24.80 <50 - <0.50 <0.50 <0.50 <0.50 0.72[2] No FP,No S, No O
<br /> 6/17/2002 NP - 27.60 <50 <0.50 <0.50 <0.50 <0.50 <0.50[2] No FP, No S, No O
<br /> 9/9/2002 NP - 29.45 - <50 -- 5.5 <0.5 <0.5 1.4 1.6 INo FP,No S, No O
<br /> 12/4/2002 NP 30.69 -- 610 19 1.9 <0.5 7.9 4.6 No FP,No S, No O
<br /> 03/03/2003 NP 28.51 1,300 - 20 1.8 2.3 11 3.6[2]
<br /> 06/03/2003 NP -- 28.55 83 - 4.3 <0.50 <0.50 <0.50 2.7[2]
<br /> 09/18/2003 NP - 32.07 -- 630 32 <5.0 7.7 <5.0 <5.0[2]
<br /> 12/08/2003 NP 31.92 1,400 -- 48 <10 24 <10 <10[2]
<br /> 03/11/2004 NPI 28.31 1,000 - 68 <10 50 <10 <10[2]
<br /> 06/11/2004 NP 1 30.92 240 - 3.6 <0.50 <0.50 0.77 1.5[2] 1.6
<br /> Report Date.November 17,2005 Page 12 of 17
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