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<br /> Table 1
<br /> Groundwater Elevation and Analytical Data
<br /> ARCO Service Station No. 548
<br /> 1612 W. Hammer Lane, Stockton, CA
<br /> TOCation Depth to Water Level Ethyl- Total
<br /> Well Date PI EtevWater Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtHE DO
<br /> Number Sampled NP (feet msl) (feet bgs) (feet msi) (pg/L) (p9IL) (pg1L) (pg/L) (pg/L) (pg1L) (pg/L) (mg/L) Comments
<br /> MW-5 06/11/2004 P 9.37 29.83 -20.46 <50 -- <0.50 <0.50 <0.50 <0.50 <0.50[2] 2.9
<br /> 08/0312004 P 9.37 1 31.25 -21.88 <50 -- <0.50 <0.50 <0.50 {0.50 1.1[2] 4.0
<br /> MW-6 2/15/1995 - 8.95 40.02 -31.07 <50 - <0.5 <0.5 <0.5 <0.5 NA -- No FP,No S,No O,[58]
<br /> 5/12/1995 - 8.95 38,26 -29.31 <50 -- <0.5 <0.5 <0.5 <0.5 NA - No FP,No S, No 0, [58]
<br /> 8/29!9995 -- 8.95 39.91 -30.9fi •<52 - <0.5 <0.5 <0.5 <0.5 NA - No FP,No S.No 0, [59]
<br /> 1214!1995 - 8.95 38.38 29.43 '<70 -- <0.5 <0.5 <0.5 <0.5 NA -- No FP,No S,No O,158]
<br /> 2/2/9996 -- 8.95 36.38 -27.43 <50 <0.5 <0.5 <0.5 <0.5 NA - No FP,No S, No 0
<br /> 5/10/1996 -- 8.95 33.88 -24.93 <50 - <0.5 <0.5 <0.5 <0.5 <3 -- No FP,No S,No O,[59]
<br /> 8/29/1996 - 8.95 35.66 -26.71 <50 -- <0.5 <0.5 <0.5 <0.5 <3 No FP,No S,No O, [59]
<br /> 11/20/1996 -- 8.95 34.57 -25.62 <50 - <0.5 <0.5 <0.5 <0.5 <3 - No FP,No S, No 0, [59]
<br /> 3/19/1997 -- 8.95 30.83 -21.88 <50 - <0.5 <0.5 <0.5 <0.5 <3 - No FP,No S.No O,[57]
<br /> 5/27/1997 - 8.95 31.16 -22.21 <50 -- <0.5 <0.5 <0.5 <0.5 <3 - No FP,No S,No O
<br /> 8/12/1997 8.95 32.55 -23.60 <50 <0.5 <0.5 <0.5 <0.5 <5 - No FP,No S,No O,[59j
<br /> 11/18/1997 - 8.95 32.19 -23.24 54 -- 5.9 5.8 1.6 9.2 <5 -- No FP,No S,No O, [57]
<br /> 2/16!1998 -- 8.95 28.83 -19.88 <50 - <0.5 g<O.5 <0.5 <0.5 <5 - No FP,No S, No O, [57]
<br /> 6/23/1998 P 8.95 26.36 -17.41 <50 - <0.5 <0.5 <05 <5 -- No FP,No S,No O,[57]
<br /> 9/29/1998 P 8.95 28.19 -19.24 <50 -- <0.5 <0.5 <0.5 <5 -- No FP,No S,No O,157]
<br /> 12/30/1998 P 8.95 25.91 -16.96 <50 - <0.5 <0.5 <0.5 <5 - No FP,No S, No O, [59]
<br /> 3/31/1999 P 8.95 24.37 -15.42 <50 -- 0.623 <0.5 <0.5 <0.5 12.2 -- No FP,No S,No O,[59]
<br /> 6/28/1999 P 8.95 25.59 -16.64 <50 - <0.5 <0.5 <0.5 <0.5 18.1 - No FP,No S,No O, [59]
<br /> 9/10/1999 P 8.95 27.62 -18.67 <50 - <0.5 <0.5 <0.5 <0.5 17.8 -- INo FP,No S, No O,[59]
<br /> 12/13/1999 P 8.95 26.62 -17,67 <50 -- <0.5 <0.5 <0.5 <0.5 9.35 - No FP,No S,No 0,(59]
<br /> 3/2812000 P 8.95 23.39 -14.44 <50 - <0.5 <0.5 <0.5 <0.5 9.01 -- No FP,No S,No O, [59]
<br /> 6/26/2000 P 8.95 24.41 -15.46 <50 - <0.5 r <0.5 <0.5 <0.5 14[2] INo FP,No S, No O,[57]
<br /> 9/28/2000 P 8.95 27.00 -18.05 <50 - <0.5 <a.5 <0.5 <0.5 5.31 -- No FP,No S,No O
<br /> 12118/2000 P 8.95 25.66 -16.71 <50 - <0.5 10.5 <0.5 <0,5 <2[2] INo FP,No S, No O
<br /> 3/14/2001 P 8.95 24.17 -15.22 <50 -- <0.5 <0.5 <0.5 <0.5 2.12 - No FP,No S,No O
<br /> 6/19/2001 P 8.95 25.16 -16.21 <50 - <0.5 <0.5 <0.5 <0.5 7.2[2] - No FP,No S, No O
<br /> 9/11/2001 P 8.95 27.69 -18.74 <50 -- <0.5 <0.5 <0.5 <0.5 6.8[2] -- No FP,No S,No O
<br /> 12/13/2001 P 1 8.95 26.95 -18.00 <50 - <0.50 <0.50 <0.50 0.73 21[2] - No FP,No S, No O
<br /> 3/12/2002 P 8.95 25.13 -16.18 <50 - <0.50 <0.50 <0.50 <0.50 0.53[2] -- No FP,No S,No O
<br /> 6/17/2002 P 8.95 26.22 -17.27 <50 -- <0.50 <0.50 <0.50 <0.50 7.7[2] -- Na FP,No S, No O
<br /> 9/9/2002 P 8.95 29.11 -20.16 <50 - <0.5 <0.5 <0.5 <0.5 1 - Na FP,No S,No O
<br /> Report Date:August 13,2004 Page 7 o/15
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