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TOE 1 ,
<br /> Groundwater Elevation and Analytical Data '
<br /> Former ARCO Service Station No 2168
<br /> 441 Charter Way
<br /> Stockton,Callfomia
<br /> Elevation
<br /> Top of Static Groundwater Depth to Ethyl- Total Dissolved
<br /> Well ID & Casing Water Level Elevation Screen Benzene Toluene benzene Xylenes MtBE Oxygen
<br /> Sample Date (feet msl) (feet bgs) (feet msl) (feet bgs) TPHg yg1L ug1L Frg1L uglL A& Ng/L mg1L
<br /> MW 7 2/16/1995 Well Inaccessible
<br /> 5/17/1995 888 3050 2162 300 40 000 2,300 8,200 820 4,800 NA NA
<br /> 48 8/15/1995 3041 2153 30,000 1 400 4,400 490 2,800 NA NA
<br /> 48 11/29/1995 3056 -21 68 45,000 2,100 6,400 800 31600 NA NA
<br /> 2/27/1996 2775 1887 40,000 2,700 7,800 740 4,000 NA NA
<br /> 48 5/15/1996 2613 1725 38 000 2,500 7,300 790 4 100 <500*[1] NA
<br /> 8/22/1996 2667 1779 52,000 4,400 9,900 790 4,600 <500*[1) NA
<br /> 11/25/1996 2687 1799 52,000 3,500 91100 810 4,700 <600*`]1] NA
<br /> 2/24/1997 2289 1401 25,000 1,300 3,700 500 2,200 <700**[1) NA
<br /> W19/1997 2277 1389 19,000 970 21800 390 1,700 <300*(1 1 NA
<br /> 47 8/21/1997 2389 1501 19,000 1,100 2,600 490 2,000 <500**[1) NA
<br /> 48 11/17/1997 2491 1603 2,300 120 190 20 100 <50[l) NA
<br /> 47 2/9/1998 2221 1333 21,000 1,100 2,800 660 2,700 4,400[1] NA
<br /> 47 5/22/1998 1836 948 9,580 593 919 282 942 <100 NA
<br /> 47 8/12/1998 1857 969 5,690 289 460 197 628 <2 NA
<br /> 47 11/9/1998 1968 1080 4,970 406 612 119 520 <2 NA
<br /> 47 2/17/1999 1890 1002 42,300 3,650 8,2$0 942 5,030 <2 NA
<br /> 35 5/25/1999 1831 943 9,910 944 11910 287 1,550 <2 NA
<br /> 47 8/18/1999 19,98 1050 10,400 681 1,040 331 11500 <2 NA
<br /> 47 12117/99[2] 2030 1142 1,790 833 269 966 8 08 <2 NA
<br /> 47 2/22/2000 1936 1048 2,240 159 98 149 399 <2 NA
<br /> 41 2/22/2000 1799 911 33,900 6,560 1,130 1,090 4,610 <2 NA
<br /> 8/30/2000 1926 1038 1,590 22 195 49 102 <2 NA
<br /> 11/21/2000 1996 11 08 2,260161 106 768 542 216 <2 NA
<br /> 2/15/2001 1997 11 09 18,400[7] 1 400 2 530 656 2,420 <2 1 2
<br /> 0511701 1922 1034 2,320[5] 207 119 407 991 <10 08
<br /> 8/16/2001 20 59 11 71 2200 30 14 49 95 <2 06
<br /> 12/6/2001 21 63 1275 6,800 580 270 210 930 <5 0' 0 9
<br /> 2/14!2002 2003 11 15 62[8] <0 50 <0 50 053 <0 50 <0 50 24
<br /> 6/13/2002 20 35 11 47 1,400[8] 29 40 12 13 <0 50 1 4
<br /> 8/22/2002 21 38 1250 1,400 11 <50 15 10 <0 50 09
<br /> 11/13/2002 2233 1345 1,400 40 <10 18 34 <10
<br /> 2/12/2003 2316 -1428 820 <50 <50 <50 <50 <5 0 20
<br /> 5/29/2003 2080 11 92 380 <0 5 <0 5 1 9 13 <1 0 50
<br /> 8/4/2003 21 41 -1253 620 <0 50 <0 50 <0 50 <0 50 <0 50 20
<br /> 11/3/2003 22 50 -1362 320J <2 6 UJ <2 5 UJ <2 5 UJ <2 5 UJ <2 5 UJ 1 98
<br /> MW 8 8/30!2000 935 1885 9 50 150 115 <20 <2 0 <2 0 <2 0 <20 NA
<br /> 11121=00 1930 995 <50 <0 50 <0 50 <0 50 <0 50 <2 0 NA
<br /> 2115!2001 1883 9 48 <50 <0 50 <0 50 <0 50 <0 50 <20 1 2
<br /> 5/17/2001 1890 9 55 <50 <0 50 <0 50 <0 50 <0 50 <20 2 6
<br /> 8/16/2001 2012 1077 <50 <0 50 <0 50 <0 50 <0 50 <20 0 9
<br /> 12/6/2001 1829 894 <50 <0 50 <0 50 <0 50 <0 50 <0 50 1 6
<br /> k 1W processW5 5P ARG01021681Quaderfyl4 QTR 0312168 GW MR 4Q03
<br /> Page 7 of 9
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