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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 TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO
<br /> Number Sampled NP (feet msl) (feet bgs) (feet msi) (pg/L) M/L) (pg/L) (pg/L) (Erg/L) (pg/L) (/rg/L) (mg/L) Comments
<br /> MW-2 11/20/1996 9.82 35.25 -25.43 <50 0.5 <0.5 <0.5 <0.5 <3 No FP, No S, No O,[61]
<br /> 3/19/1997 - 9.82 31.52 -21.70 <50 -- 0.6 <0.5 <0.5 <0.5 <3 No FP,No S,No O,[61]
<br /> 5/27/1997 - 9.82 31.79 -21.97 <50 1.2 <0.5 <0.5 <0.5 <3 No FP, No S, No O
<br /> 8/12/1997 9.82 --33.18 -23.36 52 <0.5 <0.5 <0.5 <0.5 <5 No FP, No S, No O, [60]
<br /> 11/18/1997 -- 9.82 32.88 -23.06 <50 - 2.6 1.4 0.65 1.5 <5 No FP, No S, No O,[61]
<br /> 2/16/1998 9.82 29.48 -19.66 <50 <0.5 <0.5 <0.5 <0.5 <5 No FP,No S,No O,[60]
<br /> 6/23/1998 P 9.82 26.98 -17.16 <50 - <0.5 <0.5 <0.5 <0.5 <5 - No FP, No S, No O, [60]
<br /> 9/29/1998 P 9.82 28.78 -18.96 <50 <0.5 <0.5 <0.5 <0.5 <5 No FP, No S, No O, [60]
<br /> 12/30/1998 P 9.82 E26.25
<br /> 6.53 -16.71 <50 <0.5 <0.5 <0.5 <0.5 <5 No FP, No S, No O, [60]
<br /> 3/31/1999 P 9.82 .11 -15.29 <50 -- c0.5 <0.5 <0.5 <0.5 <5 - No FP,No S,No O,[60]
<br /> 6/28/1999 P 9.82 -16.43 <50 - <0.5 <0.5 <0.5 <0.5 <5 No FP, No S, No O,[60]
<br /> 9/10/1999 P 9.82 .28 -18.46 <50 <0.5 <0.5 <0.5 <0.5 <5 No FP, No S, No O, [60]
<br /> 12/13/1999 P 9.82 27.35 -17.53 <50 - <0.5 <0.5 <0.5 <0.5 3.48 - No FP,No S, No O, [60]
<br /> 3/28/2000 P 9.82 24.07 -14.25 <50 <0.5 <0.5 <0.5 <0.5 <2.5 -- No FP,No S,No O,[60]
<br /> 6/26/2000 P 9.82 25.12 -15.30 <50 -- <0.5 <0.5 c0.5 <0.5 <2.0[2] No FP,No S,No O, [61]
<br /> 9/28/2000 P 9.82 27.68 -17.86 <50 <0.5 <0.5 <0.5 <0.5 <2.5 INo FP, No S, No O
<br /> 12/18/2000 P 9.82 26-29 -16.47 <50 <0.5 <0.5 <0.5 <0.5 <2[2] -- No FP,No S, No O
<br /> 3/14/2001 P 9.82 25.00 -15.18 <50 <0.5 <0.5 <0.5 <0.5 <5.0 -- No FP,No S,No O
<br /> 6/19/2001 P 9.82 25.88 -16.06 <50 -- <0.5 <0.5 <0.5 <0.5 <2[2] No FP,No S, No O
<br /> 9/11/2001 P 9.82 28.41 -18.59 <50 <0.5 <0.5 <0.5 <0.5 <2[2] - No FP, No S,Yes O
<br /> 12/13/2001 P 9.82 27.70 -17.88 <50 <0.50 <0.50 <0.50 <0.50 1.3[2] No FP, No S,Yes O
<br /> 3/12/2002 P 9.82 26.01 -16.19 <50 -- <0.50 <0.50 <0.50 <0.50 1.6[2] -- No FP,No S,Yes O
<br /> 6/17/2002 P 9.82 26.98 17.16 <50 - <0.50 <0.50 <0.50 <0.50 1.4[2] -- No FP,No S,No O
<br /> 9/9/2002 P 9.82 29.84 -20.02 <50 <0.5 <0.5 <0.5 <0.5 1.6 No FP, No S, No O
<br /> 12/4/2002 P 9.82 29.63 -19.81 <50 - <0.5 1.6 <0.5 3.1 2 - No FP, No S, No O
<br /> 03/03/2003 P 9.82 27.85 -18.03 <50 <0.50 <0.50 <0.50 <0.50 1.7[2] 5.41
<br /> 06/03/2003 P 9-82 27.90 -18.08 <50 <0.50 <0.50 <0.50 <0.50 0.94[2] 2.68
<br /> 09/18/2003 P 9.82 31.42 -21.60 <50 <0.50 <0.50 <0.50 <0.50 1.3[2] 2.08
<br /> 1210812003 P 9.82 31.32 -21.50 <50 <0.50 <0.50 <0-50 <0.50 1.3[2] --
<br /> 03/11/2004 P 9.82 29.23 -19.41 <50 <0.50 <0.50 <0.50 <0.50 1.2[2] 2.06
<br /> 06/11/2004 P 9.82 30.27 -20.45 <50 - c0.50 <0.50 <0.50 <0.50 0.91[2] 6.4
<br /> 08/03/2004 P 9.82 31.73 -21.91 <50 <0.50 <0.50 <0.50 <0.50 0.83[2] 9.7
<br /> 12/22/20041 P 9.82 31.03 -21.21 <100 <0.50 <0.50 c0.50 <0.50 0.69[2] 5.4
<br /> Report Date.November 17,2005
<br /> Page 3 of 17
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