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Table 2
<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) (pg/L) (pg/L) WL) (Pg/L) (pg/L) (ygfL) (yg/L) (mg/L) Comments
<br /> MW-5 3/31 /1999 P 9.37 24.71 -15.34 93.4 - 8.42 <0.5 <0.5 0.835 15.7 -- No FP, No S, No O, [60]
<br /> 8/28/1999 P 9.37 25.88 -16.51 175 •- 22.4 <0.5 1 .15 2.03 32.8 -- No FP, No S, No O, [60]
<br /> 9/10/1999 P 9.37 27.87 -18.50 614 -- 41 .9 <0.5 10.9 29.3 93.6 -- No FP, No S, No O, [so]
<br /> 12/13/1999 P 9.37 26.92 -17.55 <50 -- <0.5 <0.5 <0.5 <0.5 7.52 - No FP, No S, No O, [60]
<br /> 3/28/2000 P 9.37 23.74 -14.37 <50 1 -- <0.5 <0.5 <0.5 <0.5 <2.5 -- No FP, No S, No O, [60]
<br /> 6/26/2000 P 9.37 24.71 -15.34 106 -- 1 .99 <0.5 <0.5 <0.542[2] - No FP, No S, No 0, [61 ] _
<br /> 9/28/2000 P 9.37 27.24 -17.87 137 -- <0.5 <0.5 <0.5 <0.5 47.4 -- No FP, No S, No O
<br /> 12/18/2000 P 9.37 25.87 -16.50 <50 -- <0.5 <0.5 <0.5 <0.5 <2[2] -- No FP, No S, No O
<br /> 3/14/2001 P 9.37 24.48 -15.11 <50 -- <0.5 <0.5 <0.5 <0.5 <1 .0 -- No FP, No S, Yes 0
<br /> 6/19/2001 P 9.37 25.43 -16.06 <50 - <0.5 <0.5 <0.5 <0.5 <2[2] -- No FP, No S, Yes 0
<br /> 9/11/2001 P 9.37 27.95 -18.58 <50 -- <0:5 <0.5 <0.5 <0.5 Q[2] -- No FP, No S, Yes O
<br /> 12/13/2001 P 9.37 27.20 -17.83 <50 -- <0.50 <0.50 <0.50 <0.50 <0.50[2] - No FP, No S, Yes 0
<br /> 3/12/2002 P 9.37 25.53 -16.16 <50 -- <0.50 <0.50 <0.50 <0.50 0.98[2] -- No FP, No S, Yes O
<br /> 6/17/2002 P 9.37 26.53 -17.16 <50 •- <0.50 <0.50 <0.50 <0.50 <0.50[2] -- No FP, No S, Yes O
<br /> 9/9/2002 P 9.37 29.38 -20.01 <50 -- <0.5 <0.5 <0.5 <0.5 <0.5 - No FP, No S, Yes 0
<br /> 12/4/2002 P 9.37 29.14 -19.77 <50 -- <0.5 0.62 <0.5 3.4 <0.5 - No FP, No S, Yes O
<br /> 03/03/2003 P 9.37 28.91 -19.54 <50 -- <0.50 <0.50 <0.50 <0.50 <0.50[2] 1 .99
<br /> 06/03/2003 P 9.37 28.67 -19.30 <50 -- <0.50 <0.50 <0.50 <0.50 <0.50[2] 5.48
<br /> 09/18/2003 P 9.37 32.08 -22.71 <50 -- <0.50 <0.50 <0.50 <0.50 <0.50[2] 1 .21
<br /> 12/08/2003 P 9.37 31 .93 -22.56 <50 -- <0.50 <0.50 <050 <0.50 <0.50[2] -
<br /> 03/11/2004 P 9.37 29.17 -19.80 <50 -- <0150 <0.50 <0.50 <0.50 <0.50[2] 3.36
<br /> MW-6 2/15/1995 - 8.95 40.02 -31 .07 <50 -- <0.5 1 <0.5 <0.5 <0.5 NA - No FP, No S, No 0, [58]
<br /> 5/12/1995 -- 8.95 38.26 -29.31 <50 -- <0.5 <0.5 <0.5 <0.5 NA - No FP, No S, No 0, [58]
<br /> 8/29/1995 - 8.95 39.91 -30.96 `<52 - <0.5 <0.5 <0.5 <0.5 NA -- No FP, No S, No O, [59]
<br /> 12/4/1995 8.95 38.38 -29.43 `<70 - <0.5 <0.5 <0.5 <0.5 NA -- No FP, No S, No O, [58]
<br /> 2/2/1996 - 8.95 36.38 -27.43 <50 -- <0.5 <0.5 <0.5 <0.5 NA
<br /> 5/10/1996 8.95 33.88 -24.93 <50 - <0.5 <0.5 <0.5 <0.5 <3 -- No FP, No S, No 0, [59]
<br /> 8/29/1996 1 - 8.95 35.66 1 -26.71 <50 1 -- <0.5 <0.5 <0.5 <0.5 <3 - No FP, No S, No O, [59]
<br /> 11/20/1996 - 8.95 34.57 -25.62 <50 -- <0.5 <0.5 <0.5 <0.5 <3 - No FP, No S, No 01 [59]
<br /> 3/19/1997 - 8.95 30.83 -21 .88 <50 -- <0.5 <0.5 <0.5
<br /> 5/27/1997 8.95 31 .16 -22.21 <50 -- <0.5 <0.5 Z.5 <0.5 1 <3 1 INo FP, No S, No 0
<br /> 8/12/1997 - 8.95 32.55 -23.80 <50 -- <0.5 <0.5 <0.5 <0.5 <5 -- No FP, No S, No O, [59]
<br /> 11 /18/1997 - 8.95 32. 19 -23.24 54 -- 5.9 5.8 1 .6 9.2 <5 -- No FP, No S, No 0, [57]
<br /> Report Date: May 13, 2004 Page 6 of 14
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