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Table 1
<br /> Groundwater Elevation and Analytical.Data
<br /> - ARCO Service Station No: 2130 -
<br /> 7946 N. EL Dorado Street, Stockton, CA
<br /> TOC Depth to Water Level 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) (ug1L) (pg/L) (pg1L) (pg/L) (1rg1L) (,ug/L) (Ng/L) (mg/L) Comments
<br /> MS-36 12/20/2004 -- -- - - - -- -- -• -- -- - Not Sampled
<br /> 03128!2005 P 42.50 <50 -- 1.8 <0.50 X0.50 0.64 33[2] 5.0
<br /> MW-1 1/7/1992 - 14.58 61.48 -46.90 18,000 - 1,600 610 140 8.5 NA -- INo FP,No S
<br /> 2/24/1992 14.58 60.76 -46.18 NA - NA NA NA NA NA -- No FP, No S
<br /> 3/31/1992 -- 14.58 60.56 -45.33 NA -- NA NA NA NA NA -- No FP,No S
<br /> 4/21/1992 -- 14.58 60.91 -46.33 5,200 - 1,400 360 53 260 NA -- No FP,No S
<br /> 5/11/1992 - 14.58 61.57 -46.99 NA - NA NA NA NA NA -- No FP, No S
<br /> 6/23/1992 -- 14.58 61.68- -47.10 NA -- NA NA NA NA NA - No FP,No S
<br /> 7/8/1992 -- 14.58 62.84 -48.26 6,500 - 1,900 320 89 230 NA No FP,No S
<br /> 8/10/1992 - 14.58 63.74. -49.16 NA NA NA NA NA NA -- No FP,No S
<br /> 9/15/1992 -- 14.58 64.37 -49.79 NA - NA NA NA NA NA - No FP,No S
<br /> 10/6/1,992 - 14.58 64.52_- =49:94 11,000 - 2,500 800 ' 210 470 NA - No FP,'No S
<br /> 11/11/1992 -- 14,58 63.83 49.25 NA - NA NA NA NA NA - No FP,No S
<br /> 12/4/1992 - 14.58 63.10 48.52 NA -- NA NA NA NA NA -- No FP,No S
<br /> 1/20/1993 -- 14.58 81.83 47.25 1,800 -- 260 100 10 34 NA - No FP,No S
<br /> 3/22/1993 -- 14.58 59.95 -45.37 NA -- NA NA NA NA NA No FP,No S
<br /> 4!611993 - 14.58 59.47 -44.89 1,500 - 250 64 30 76 NA - No FP,No S
<br /> 7/30/1993 - 14.58 60.19 -45.61 2,100 390 930 38 79 NA - No FP,No S
<br /> 11/29/1993 -- 14.58 59.29 -44.71 1,200 -- 230 12 11 16 NA - No FP, No S
<br /> 3/23/1994 14.58 54.33 -39.75 1,900 120 8.2 25 7.5 NA - No FP,No S
<br /> 6/22/1994 - 14.58 54.11 -39.88 910 - 13 4 4.1 1.9 NA -- No FP,No S
<br /> 9/28/1994 - 14.58 58.17 -43.59 420 - 6.8 1.4 2.9 <0.5 NA - No FP,No S
<br /> Ih 12/1/1994 -- 14.58 57.11 -42.53 220 -- 2.4 <0.5 <0.5 <0.5 NA - No FP,No S
<br /> 2/28/1995 -- 14.58 54.21 -39.63 340 - 2.1 <0.5 0.6 <0.5 NA - No FP,No S
<br /> 5/19/1995 14.58 52.41 -37.83 210 2.9 <0.5 0.7 <0.5 NA -- No FP,No S
<br /> 8/28/1995 14.58 54.04 -39.46 240 3.2 <0.5 1 <0.5 NA - No FP, No S
<br /> 12/7/1995 14.58 52.67 -38.09 190 1.7 <0.5 <0.5 <0.5 NA - No FP, No S
<br /> 215/1996 -- 14.58 50.11 -35.53 230 - 2.5 <0.5 0.5 <0.5 NA - No FP,No S
<br /> j 5/30/1996 -- 14.58 47.17 -32.59 180*`* -- 1.2 <0.5 <0.5 <0.5 <4*" - No FP,No S
<br /> 1 9/18/1996 - 14.58 50.96 -36.38 200 - 1.6 <0.5 <0.5 <0.5 <5'* -- No FP,No S
<br /> 11/26/1996 -- 14.58 48.80 -34.22 220 -- 1.5 <0.5 <0.5 <0.5 5 - No FP,No S
<br /> 3/24/1997 - 14.58 43.73 -29.15 <50 -- <0,5 <0.5 <0.5 <0.5 <3 - No FP, No S
<br /> 5/20/1997 - 14.58 44.32 -29.74 230 <7** <0.6** <0.5 0.5 <5** -- No FP, No S
<br /> Report Date:April 25,2005 Page 3 of 23
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