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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 I 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) (pg1L) (pg1L) (pg1L) (ppg1L) (1,gIL) (pg1L) (pg/L) (mg/L) 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 /> 9/29/1998 P 11.57 30.13 -18.56 <50 -- <0.5 <0.5 <0.5 <0.5 <5 - No FP,No S,No O, [62]
<br /> 12!3011998 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!2811999 P 11.57 27.68 -16.09 <50 -- <0.5 <0.5 <0.5 <0.5 <5 --
<br /> No FP,No S,No 0,[62]
<br /> 9/10/1999 P 11.57 29.54 -i 7,97 <50 - <0.5 <0.5 <0.5 <0.5 <5 -- No FP,No 5,No O,[62]
<br /> 12113!1999 P 11.57 28.80 -17.23 <50 w <0.5 <0.5 <0.5 <0.5 <2.5 - No FP,No S,No O,[62j
<br /> 3l28/20DQ P 11.57 25.71 -14.14 <5D -- <0.5 <0.5 <0.5 <0.5 <2.5 - No FP,No S,No O,[62]
<br /> 6126/2000 P i 1.57 26.53 14.96 <5Q - <0.5 <0.5 <0.5 <0,5 <2.012] -- No FP,No S,No 0,[63]
<br /> 9!2812000 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 /> 12118/2000 P 11.57 27.75 --:i-.18 <50 - <0.5 <0.5 <0.5 <0.5 <2[2] No FP,No S,No O
<br /> 3114/2001 P 11.57 26.42 14.85 <50 - <0.5 <D.5 <0.5 <0.5 <1.0 -- No FP,No S,No O
<br /> 6!1912001 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 <gq -- <0.5 <0.5 <0.5 <0.5 <2[2] No FP,No S,No O
<br /> -
<br /> <0.50[2] No FP,No S,No O
<br /> 12113/2001 P 11.57 29.10 -17.53 <50 - <0.50 <0.50 <0.50 <0.50 --
<br /> 3/1212002 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 /> 6117!2002 P 11.57 28.26 -16.69 <50 - <0.50 <0.5Q <0.50 <0.50 <<0.5 ] -- 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 /> 121412002 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 /> 03/1112004 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 <0.50 <0.50 <0.50[2] 3.1
<br /> MW-5 2!1511995 - 9.37 40.28 -30.91 6,700 - 420WE
<br /> 1,100 NA -- No FP,No S, No O,[60]
<br /> 5/12/1995 -- 9.37 38.95 -29.58 5,000 -- 560 600 NA - No FP,No S,Yes O, [61]
<br /> 8/29/1995 - 9.37 40.07 -30.70 5,700 -- 410 590 NA -- No l=P,NO 5, No O,[fi0]
<br /> 12/4/1995 -- 9.37 38.63 -29.26 1,200 -- 55 92 NA - No FP,No 5,Yes O,[61]
<br /> 2!211996 - 9.37 36.66 -27.29 270 -- 7.6 9.$ NA - No FP,No S,Yes O
<br /> Page S of 15
<br /> Report Date:August 13,2004
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