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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 (feet msl) (feet bgs) (feet msl) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L m
<br /> ( g/L) Comments
<br /> MW-2 6/17/2002 P 9.82698 -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, Na 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 c0.50 <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 /> 12/08/2003 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 /> MW-3 2/15/1995 - 9.95 40.69 -30.74 **84 -- <0.5 <0.5 <0.5 <0.5 NA - No FP, No S, No O, [62]
<br /> 5/12/1995 9.95 38.80 -28.85 **100 -- <0.5 <0.5 <0.5 <0.5 NA - No FP, No S, No O, [62]
<br /> 8/29/1995 - 9.95 40.27 -30 <170 -- <0.5 <0.5 <0.5 <0.5 NA - Na FP, No S, No O, [62]
<br /> 12/4/1995 - 9.95 39.06 -29.11 *<150 -- <0.5 c0.5 <0.5 <0.5 NA - No FP, No S, No O, [62]
<br /> 2/2/1996 - 9.95 37. 10 -27.15 '<100 - <0.5 <0.5 c0.5 <0.5 NA -- No FP, No S, No O
<br /> 5/10/1996 - 9.95 34.53 -24.58 **<100 - <0.5 <0.5 <0.5 <0.5 <3 - No FP, No S, No O, [62]
<br /> 8/29/1996 - 9.95 36.21 -26.26 **<90 - <0.5 <0.5 <0.5 <0.5 *<4 - No FP, No S, No 01 [62]
<br /> 11/20/199611 9.95 35.31 -25.36 "<90 <0.5 <0.5 <0.5 <0.5 <3 INo FP, No S, No 0, [62]
<br /> 3/19/1997 -- 9.95 31 .54 -21 .59 "*<80 -- <0.5 <0.5 <0.5 <0.5 <3 - No FP, No S, No O,. [62]
<br /> 5/27/1997 - 9.95 31 .16 -21 .21 **<70 - <0.5 <0.5 <0.5 <0.5 <3 -- No FP, No S, No O
<br /> 8/12/1997 - 9.95 33.14 -23.19 <50 - <0.5 <0.5 <0.5 <0.5 <5 -- No FP, No S, No O, [62]
<br /> 11/18/1997 -- 9.95 32.95 -23.00 <50 - 1 .5 0.87 <0.5 0.68 <5 - No FP, No S, No 0, [62]
<br /> 2/16/1998 -- 9.95 29.05 -19. 10 140 -- 0.5 0.71 <0.5 <0.5 <5 - No FP, No S, No O, [63]
<br /> 6/23/1998 P 9.95 26.94 -16.99 <50 -- <0.5 <0.5 <0.5 <0.5 <5 - No FP, No S, No 01 [62]
<br /> 9/29/1998 P 9.95 28.72 -18.77 <50 1 -- <0.5 <0.5 <0.5 <0.5 <5 - No FP, No S, No O, [62] J
<br /> 12/30/1998 P 9.95 26.56 -16.61 <50 - <0.5 <O.5 <0.5 <0.5 <5 -- No FP, No S, No 01 [62]
<br /> 3/31/1999 P 9.95 25.09 -15.14 <50 - <0.5 <0.5 <0.5 <0.5 17 - No FP, No S, No O, [62]
<br /> 6/28/1999 P 9.95 26.25 -16.30 <50 -- <0.5 <0.5 <0.5 <0.5 23.6 -- No FP, No S, No O, [62]
<br /> 9/10/1999 P 9.95 28.28 -18.33 <50 - c0.5 <0.5 <0.5 <0.5 27.7 -- No FP, No S, No O, [62]
<br /> 12/13/1999 P 9.95 27.35 -17.40 <50 - <0.5 <0.5 <0.5 <0.5 <2.5 -- No FP, No S, No O, [62]
<br /> 3/28/2000 P 1 9.95 24.13 -14. 18 <50 - <0.5 <0.5 <0.5 <0.5 18 - No FP, No S, No O, [62]
<br /> 6/26/2000 P 9.95 25.14 -15. 19 <50 - <0.5 <0.5 <0.5 <0.5 6.3[2] -- No FP, No S, No O, [63]
<br /> 9/28/2000 P 9.95 27.67 -17.72 <50 - <0.5 <0.5 <0.5 <0.5 107 -- No FP, No S, No O
<br /> 12/18/2000 P 9.95 26.37 -16.42 <50 1 - c0.5 <0.5 <0.5 <0.5 <2[2]
<br /> 3/14/2001 P 9.95 24.92 -14.97 <50 1 -- c0.5 <0.5 <0.5 <0.5 <1 .0
<br /> Report Date: May 13, 2004
<br /> Page 3 of 14
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