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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 Ethyl- Total
<br /> Well Date P/ Elevation Water Elevation TPHg TPI-Id Benzene Toluene benzene Xylenes MtBE Do
<br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) MIL) (pg/L) (pg/L) (/,9/L) (pg/L) 419/L) (,og/L) (mg/L) Comments
<br /> MW-1 6/28/1999 P 10.36 26.75 -16.39 252 24.5 <0.5 12.3 2.98 6.51 No FP,No S, No O, [55]
<br /> 9/10/1999 P 10.36 28.75 -18.39 199 - 13.9 c0.5 8.13 7.01 5.02 No FP, No S, No O,[55]
<br /> 12/13/1999 P 10.36 27.85 -17.49 <50 <0.5 <0.5 <0.5 <0.5 5.88No FP,Na 5,No O,[55]
<br /> 3/28/2000 1 P 10.36 24.61 -14.25 109 -- 3.29 <0.5 1.86 0.89 4.43 No FP,No S, No O,[55]
<br /> 6/26/2000 P 10.36 25.60 -15.24 74.2 -- 6.46 <0.5 1.46 0.916 <2.0[2] No FP, No S, No O, [56]
<br /> 9/28/2000 P 10.36 28.14 -17.78 54.8 2.18 <0.5 1.11 <0.5 <2.5 No FP, No S,No O
<br /> 12/18/2000 P 10.36 26.80 -16.44 <50 -- 0.559 <0.5 <0.5 0.562 11.6[2] No FP,No S,No O
<br /> 3/14/2001 P 10.36 25.37 -15.01 <50 -- 0.892 1.43 <0.5 1.8 19 Na FP,No S, No O
<br /> 6/19/2001 P M36 26.35 -15.99 <50 - 1.2 1.1 <0.5 0.73 8.8[2] -- No FP, No S, No O
<br /> 9/1 112001 P 10.36 28.85 -18.49 <50 <0.5 <0.5 <0.5 0.6 15[2] -- No FP,No S,No O
<br /> 12113/2001 P 10.36 28.15 -17.79 540 43 160 13 76 1,900[2] No FP,No S,Yes O
<br /> 3/12/2002 P 10.36 26.37 -16.01 60[3] -- 4.4 5.5 <0.50 4 1,100[2] No FP, No S,Yes O
<br /> 6/17/2002 P 10.36 27.45 -17.09 420[3] 2.2 2.4 <0.50 1 770[2] No FP, No S, No O
<br /> 9/9/2002 P 10.36 30.29 -19.93 400 - 0.9 0.53 <0.5 <0-5 900 -- No FP,No S,No O
<br /> 12/4/2002 P 10.36 30.10 -19.74 <2,500 <25 <25 <25 <25 740 - No FP,No S,No O
<br /> 03/03/2003 P 10.36 28.29 -17.93 <1,000 <10 <10 <10 <10 530[2] 5.34
<br /> 06/03/2003 P 10.36 28.11 -17.75 <50 -- 0.94 <0.50 <0.50 <0.50 320[2] 3.97
<br /> 09/18/2003 P 10.36 31.63 -21.27 130 R <25 <25 <25 <25 320[2] 1.61
<br /> 12/08/2003 P 10.36 31.56 -21.20 80 R -- <5.0 <5.0 <5.0 <5.0 250[2]
<br /> 03/11/2004 P 10.36 29.96 -19.60 60 -- <5.0 <5.0 <5.0 <5.0 200[2] 1.49
<br /> 112004 P 10.36 30.74 -20.38 56 -- <2.5 <2.5 <2.5 <2.5 110[2] 6.1
<br /> 08/03/2004 P 10.36 32.18 21.82 110 -- <1.0 <1.0 <1.0 c1.0 100[2] 9.9
<br /> 12/22/2004 P 10.36 31.45 -21.09 c100 UJ -- <0.50 <0-50 <0.50 0.95 49[2] 5.15
<br /> 03/29/2005 P 10.36 28.95 -18.59 <50 <0.50 <0.50 <0.50 <0.50 21[2] 6.86
<br /> 06/16/2005 P 10.36 28.39 -18.03 <50 -- <0.50 <0.50 <0.50 c0.50 <0-50[2] 2.28
<br /> 09/09/2005 P 10.36 30.57 -20.21 <50 - <Q.Sfl <0.50 <0.50 0.85 18[2] 4.76
<br /> MW-2 2115/1995 9.82 40.67 30.85 <50 - <0.5 c0.5 0.5 <0.5 NA -- No FP,No S, No O, [61]
<br /> 5/12/1995 9.82 38.85 -29.03 <50 -- <0.5 <0.5 <0.5 <0.5 NA -- No FP, No S, No O, [61]
<br /> 8/29/1995 9.82 40.44 -30.62 *<52 <0.5 <0.5 1 <0.5 NA -- No FP,No S,No O,161]
<br /> 12/4/1995 -- 9.82 39.08 -29.26 '<60 - <0.5 <0.5 <0.5 <0.5 NA No FP,No S,Na O,[61]
<br /> 2/2/1996 9.82 37.09 -27.27 <50 -- <0.5 <0.5 <0.5 <0.5 NA No FP,No S,No O
<br /> 5/10/1996 -- 9.82 34.55 -24.73 <50 - <0.5 <0.5 <0.5 <0.5 <3 No FP, No S, No O, [61]
<br /> 8/29/1996 9.82 36.29 -26.47 -'<60 <0.5 <0.5 <0.5 <0.5 <3 - No FP, No S,No O,[61]
<br /> Report Date.November 17,20005 Page 2 of 17
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