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Ar
<br /> Table 4
<br /> Groundwater Elevation and Analytical Data
<br /> ARCO Service Station No. 548
<br /> 1612 W. Hammer Lane, Stockton, CA
<br /> TQC Depth to Water Level Ethyl- Total
<br /> Well Date PI Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO
<br /> Number Sampled NP (feet msl) (feet b9s) (feet msl) WIL) UQIL) (pg/L) (pg/L) (pg/L) (pglL) 419/L) (mglL) Comments
<br /> MW-4 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 /> 912911998 P 11.57 30.13 -18.56 <50 -- c0.5 <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 <50 -- <0.5 <0.5 <0.5 <0.5 <5 -- No FP,No S,No O,[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 /> 1 211 3/1 999 P 11.57 28.80 -17.23 <50 - <0.5 <0.5 <0.5 <0.5 <2.5 - 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 -- No FP,No S,No O, [62]
<br /> 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] - Na 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 11.57 29.65 18.08 <50 - <0.5 <0.5 <0.5 <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 ----i 9.46 <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 <0.50 <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 /> 06/11/2004 P 11.57 31.60 -20.03 <50 - <0.50 <0.50 <0.50 <0.50 <0.50[2] 3.1
<br /> 08/03/2004 P 11.57 32.95 -21.38 <50 -- <0.50 <0.50 X0.50 <0.50 <0.50[2] 3.1
<br /> MW-5 2/15/1995 - 9.37 40.28 -30.91 6,700 -- 420 87 620 1,100 NA -- No FP, No S,No O, [60)
<br /> 5/12/1995 - 9.37 38.95 -29.58 5,000 - 560 110 400 600 NA - No FP, No S,Yes O,[61]
<br /> 8/29/1995 -- 9.37 40.07 -30.70 5,700 - 410 150 310 590 NA - No FP, No S,No O,[60]
<br /> 12/4/1995 - 9.37 38.63 49.26 1,200 - 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 FP,No S,Yes O
<br /> Report Date:August 25,2004
<br /> Page 5 of 15
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