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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 TPHd Benzene Toluene benzene Xylenes MtBE DO
<br /> Number Sampled NP (feetms]) (feet bgs) (feet msl) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) (mg/L) Comments
<br /> MW-3 6/19/2001 P 9.9525.91 -15.96 <50 •- <0.5 <0.5 <0.5 <0.5 <2[2] -- No FP, No S, No O
<br /> 9/11 /2001 P 9.95 28.41 -18.46 <50 - <0.5 <0.5 <0.5 <0.5 <2[2] -- No FP, No S, No O
<br /> 12/13/2001 P 9.95 27.77 -17.82 <50 -- <0.50 <0.50 <0.50 <0.50 <0.50[2] - No FP, No S, No O
<br /> 3/12/2002 P 9.95 25.94 -15.99 <50 -- <0.50 <0.50 <0.50 <0.50 <0.50[2] -- No FP, No S, No O
<br /> 6/17/2002 P 9.95 27.02 -17.07 <50 -- <0.50 <0.50 <0.50 <0.50 <0.50[2] - No FP, No S, No O
<br /> 9/9/2002 P 9.95 29.85 -19.90 <50 I -- <0.5 <0.5 <0.5 1 <0.5 <0.5 INo FP, No S, No O
<br /> 12/4/2002 P 9.95 29.68 -19.73 <50 - <0.5 <0.5 <0.5 <0.5 <0.5 - No FP, No S, No 0
<br /> 03/03/2003 P 9.95 27.91 -17.96 <50 -- <0.50 <0.50 <0.50 <0.50 <0.50[2] 2.46
<br /> 06/03/2003 P 9.95 27.93 -17.98 <50 -- <0.50 <0.50 <0.50 <0.50 <0.50[2] -
<br /> 09/18/2003 P 9.95 31 .38 -21 .43 <50 - <0.50 <0.50 <0.50 <0.50 <0.50[2] 0.99
<br /> 12/08/2003 P 9.95 31 .33 -21 .38 <50 -- <0.50 <0.50 <0.50 <0.50 <0.50[2] -
<br /> 03/11/2004 P 9.95 29.14 -19.19 <50 - <0.50 <0.50 <0.50 <0.50 <0.50[2] 1 .77
<br /> MW-4 2/15/1995 - 11 .57 42.12 -30.55 <50 - <0.5 <0.5 <0.5 <0.5 NA - No FP, No S, No O, [63]
<br /> 5/12/1995 -- 11 .57 40.28 -28.71 <50 - <0.5 <0.5 <0.5 <0.5 NA -- No FP, No S, No O, [63]
<br /> 8/29/1995 -- 11 .57 41 .72 -30. 15 <50 - <0.5 <0.5 <0.5 <0.5 NA - No FP, No S, No O, [63]
<br /> 12/4/1995 - 11 .57 40.44 -28.87 <50 -- <0.5 <0:5 <0.5 <0.5 NA - No FP, No S, No O, [63]
<br /> 2/2/1996 - 11 .57 38.54 -26.97 <50 -- <0.5 <0.5 <0.5 <0.5 NA - No FP, No S, No O
<br /> 5/10/1996 - 11 .57 36.02 -24.45 <50 - <0.5 <0.5 <0.5 <0.5 <3 -- No FP, No S, No O, [63]
<br /> 8/29/1996 -- 11 .57 37.60 -26.03 <50 -- <0.5 <0.5 <0.5 <0.5 <3 - No FP, No S, No O, [63]
<br /> 11 /20/1996 - 11 .57 36.71 -25:14 <50 -- <0.5 <0.5 <0.5 <0.5 <3 - No FP, No S, No O, [63]
<br /> 3/19/1997 -- 11 .57 33.08 -21 .51 <50 -- <0.5 <0.5 <0.5 <0.5 <3 - No FP, No S, No O, [63]
<br /> 5/27/1997 - 11 .57 33.21 -21 .64 <50 -- <0.5 <0.5 <0.5 <0.5 <3 -- No FP, No S, No O
<br /> 8/12/1997 - 11 .57 34.45 -22.88 <50 -- <0.5 <0.5 <0.5 <0.5 <5 -- No FP, No S, No O, [62]
<br /> 11 /18/1997 - 11 .57 34.31 -22.74 <50 -- 4.5 2.5 0.91 2.1 <5 - No FP, No S, No O, [64]
<br /> 2/16/1998 - 11 .57 31 . 17 -19.60 <50 -- <0.5 <0.5 <0.5 <0.5 <5 -- No FP, No S, No O, [63.8]
<br /> 6/23/1998 P 11 .57 28.52 -16.95 <50 - <0.5 <0.5 <0.5 <0.5 <5 -- No FP, No S, No O, [62]
<br /> 9/29/1998 P 11 .57 30.13 -18.56 <50 -- <0.5 <0:5 <0.5 <0.5 <5 -- No FP, No S, No O, [62]
<br /> 12/30/1998 - 11 .57 - -- -- -- -- - -- - -- -- Well inaccessible
<br /> 3/31 /1999 P 11 .57 26.69 -15. 12 <50 -- <0.5 <0.5 <0.5 <0.5 <5 -- No FP, No S, No O, [62]
<br /> 6/28/1999 P 11 .57 27.66 -16.09 1 <50 1 -- <0.5 <0.5 <0.5 1 <0.5 1 <5 - No FP, No S, No 0, [62]
<br /> 9/10/1999 P 11 .57 29.54 -17.97 <50 - <0.5 <0.5 <0.5 <0.5 <5 -- No FP, No S, No O, [62]
<br /> 12/13/1999 P 11 .57 28.80 -17.23 <50 No FP, No S, No O, [62]
<br /> 3/28/2000 P 11 .57 25.71 -14.14 <50 -- <0.5 <0.5 <0.5 <0.5 <2.5 INo FP, No S, No O,. [62]
<br /> Report Date: May 13, 2004 Page 4 of 14
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