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TABLE 1 <br /> Groundwater Monitoring and Analytical Data _ <br /> Former ARCO Service Station No 2168 <br /> 441 Charter Way <br /> Stockton, California <br /> Elevation <br /> Top of Static Groundwater Depth to Ethyl- Total Dissolved <br /> Well ID Casing Water Level Elevation Screen TPHG Benzene Toluene benzene Xylenes MtBE Oxygen <br /> &Sample Date (feet msl) (feet bgs) (feet msl) (feet bgs) ug/L ug/L ug/L ug/L ug/L ug/L (mg/L) <br /> MW-7 47 2/17/1999 1890 -1002 42,300 3,650 8,230 942 5,030 <2 NA <br /> (cant) 35 5/25/1999 1831 -943 9,910 944 1,910 287 1,550 <2 NA <br /> 47 8/18/1999 1938 -1050 10,400 681 1,040 331 1,500 <2 NA <br /> 47 12J1 7/99[2] 2030 -11 42 1,790 833 269 966 808 <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 -1108 2,260[6] 106 768 542 216 <2 NA <br /> 2J15/2001 1997 -1109 18,400[7] 1,400 2,530 656 2,420 <2 12 <br /> 0517701 1922 -1034 2,320[5] 207 119 407 991 <10 08 <br /> 8/16/2001 2059 -1171 2,200 30 14 49 95 <2 06 <br /> 12/6/2001 21 63 -1275 6,800 580 270 210 930 <5 0' 09 <br /> 2/14/2002 2003 -11 15 62[8] <0 50 <0 50 053 <0 50 <0 50 24 <br /> 6/13/2002 2035 -11 47 1,400[8] 29 40 12 13 <0 50 1 4 <br /> 8/22/2002 21 38 -1250 1,400 11 <5 0 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 <5 0 <5 0 <5 0 <5 0 <50 20 <br /> 5/29/2003 2080 -11 92 380 <0 5 <0 5 1 9 13 <1 0 50 <br /> MW-8 8/30/2000 935 1885 -950 150 115 <2 <2 <2 <2 <2 NA <br /> 11/21/2000 1930 -995 <50 <0 5 <0 5 <0 5 <0 5 <2 NA <br /> 2/15/2001 1883 -948 <50 <0 5 <0 5 <0 5 <05 <2 1 2 <br /> 5/17/2001 1890 -955 <50 <0 5 <0 5 <0 5 <0 5 <2 26 <br /> 8/16/2001 2012 -1077 <50 <0 5 <0 5 <0 5 <0 5 <2 09 <br /> 12/6/2001 1829 -894 <50 <0 50 <0 50 <0 50 <0 50 <0 50 1 6 <br /> 2/14/2002 1927 -992 <50 <0 50 <0 50 <0 50 <0 50 <0 50 31 <br /> 6/13/2002 1973 -1038 <50 <0 50 <0 50 <0 50 <0 50 <0 50 12 <br /> 8/22/2002 2078 -11 43 76 23 052 56 44 <0 50 1 8 <br /> 11/13/2002 2085 -11 50 <50 <0 50 <0 50 <0 50 <0 50 <0 50 -- <br /> 2/12/2003 2417 -1482 <50 <0 5 <0 5 <0 5 <05 <0 5 27 <br /> 5/28/2003 2068 -11 23 <50 <0 5 <0 5 <0 5 <0 5 <0 5 so <br /> K 1WprooessV5 BP ARC010216B10uar1erIy\2 QTR 03\2168 GWMR 2003 <br /> 8of10 <br />