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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 TPH9 TPHd Benzene Toluene benzene Xylenes MtBE DO
<br /> Number Sampled NP (feetms]) (feet bgs) (feet msl) (jug/L) (,vg/L) WL) (P9/L) (pg/L) (99/L) (p9/L) (mg/L) Comments
<br /> MW-4 6/26/2000 P 11 .57 26.53 -14.96 <50 - <0.5 <0.5 <0.5 <0.5 <2.0[2] - No FP, No S, No O, [63]
<br /> 9/28/2000 P 11 .57 28.94 -17.37 <50 -- <0.5 <0.5 <0.5 <0.5 <2.5 - No FP, No S, No O
<br /> 12/18/2000 P 11 .57 27.75 -16. 18 <50 -- <0.5 <0.5 <0.5 <0.5 <2[2] -- No FP, No S, No O
<br /> 3/14/2001 P 11 .57 26.42 -14.85 <50 -- <0.5 <0.5 <0.5 <0.5 <1 .0 -- No FP, No S, No O
<br /> 6/19/2001 P 11 .57 27.26 -15.69 <50 - <0.5 <0.5 <0.5 <0.5 <2[2] -- No FP, No S, No O
<br /> 9/11 /2001 P 1 11 .57 29.65 -18.08 <50 - <0.5 1 <0.5 <0.5 I <0.5 <2[2] - No FP, No S, No O
<br /> 12/13/2001 P 11 .57 29.10 -17.53 <50 - <0.50 <0.50 <0.50 <0.50 <0.50[2] No FP, No S, No O
<br /> 3/12/2002 P 11 .57 27.40 -15.83 <50 - <0.50 <0.50 <0.50 <0.50 <0.50[2] -- No FP, No S, No O
<br /> 6/17/2002 P 11 .57 28.26 -16.69 <50 -- <0.50 <0.50 <0.50 <0.50 <0.50[2] -- No FP, No S, No O
<br /> 9/9/2002 P 11 .57 31 .03 -19.46 <50 - <0.5 <0.5 <0.5 <0.5 <0.5 - No FP, No S, No O
<br /> 12/4/2002 P 11 .57 31 .00 -19.43 <50 -- <0.5 <0.5 <0.5 <0.5 <0.5 -• No FP,. No S, No O
<br /> 03/03/2003 P 11 .57 29.34 -17.77 <50 -- <0.50 <0.50 <0.50 <0.50 <0.50[2] 1 .71
<br /> 06/03/2003 P 11 .57 29.04 -17,47 <50 - <0.50 <0.50 <0.50 <0.50 <0.50[2] 3.43
<br /> 09/18/2003 P 11 .57 32.60 -21 .03 <50 -- <0.50 <0.50 <0.50 <0.50 <0.50[2] 1 .41
<br /> 12/08/2003 P 11 .57 32.46 -20.89 <50 - <0.50 <0.50 <0.50 c0.50 <0.50[2] --
<br /> 03/11/2004 P 11 .57 30.66 -19.09 <50 - <0.50 <0.50 <0.50 <0.50 <0.50[2] 3.01
<br /> MW-5 2/15/1995 -- 9.37 40.28 -30.91 62700 -- 420 87 620 13100 NA - No FP, No S, No O, [60]
<br /> 5/12/1995 -- 9.37 38.95 -29.58 51000 - 560 110 400 600 NA - No FP, No S, Yes O, [61 ]
<br /> 8/29/1995 -- 9.37 40.07 -30.70 51700 -- 410 150 310 590 NA -- No FP, No S, No O, [60]
<br /> 12/4/1995 •- 9.37 38.63 -29.26 12200 - 55 11 83 92 NA -- No FP, No S, Yes O, [61 ]
<br /> 2/2/1996 - 9.37 36.66 -27.29 270 -- 7.6 1 .5 11 9.8 NA -- No FP, No S, Yes O
<br /> 5/10/1996 -- 9.37 34.15 -24.78 51700 -- 420 180 380 610 34 -- No FP, No S, No O, 166-1--
<br /> 8/29/1996 -- 9.37 35.99 -26.62 91600 - 510 90 710 970 39 -- No FP, No S, No O, [60]
<br /> 11 /20/1996 -- 9.37 34.83 -25.46 4,500 - 210 93 310 510 *<50 - No FP, No S, No O, [60]
<br /> 3/19/1997 - 9.37 31 .12 -21 .75 6,200 - 420 68 360 590 **<60 - No FP, No S, No O, [60]
<br /> 5/27/1997 -- 9.37 31 .19 -21 .82 4,500 -- 490 59 230 350 97 - No FP, No S, Yes O
<br /> 8/12/1997 -- 9.37 32.76 -23.39 31600 -- 260 12 260 350 110 -- No FP, No S, No O, [60]
<br /> 11 /18/1997 - 9.37 32.49 -23.12 1 ,300 -- 180 12 18 88 *<25 -- No FP, No S, Yes O, [61 ]
<br /> 2/16/1998 -- 9.37 29.14 -19.77 630 -- 110 <2.5 22 8.3 44 -- No FP, No S, Yes O,
<br /> [61 .5]
<br /> 6/23/1998 P 9.37 26.61 -17.24 702 -- 50.4 7.91 33.3 36.6 47.3 - No FP, No S, No O, [60]
<br /> 9/29/1998 P 9.37 28.39 -19.02 1 ,790 - 242 <5 121 135 145 No FP, No S, No O, [60]
<br /> 12/30/1998 P 9.37 26.22 -16.85 275 -- 19 <0.5 6.05 0.629 38.2 - No FP, NOS I No O, [60]
<br /> Report Date: May 13, 2004 Page 5 of 14
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