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1W 4 i I ABLE I GROUNDWATER MONITORING DATA Former Dolly Madison Faculty 1426 South Lincoln Street Stockton,Califomia Top of Static Water Groundwater Top of Ethyl- Total Well Sampling Casing Level Elevation Screen TPHG Benzene Toluene benzene Xylenes MTBE ID Date feet ms1 feet b s feet msl (feet b s) ( L) ( t L) (lig/L) ( pg/L) (Vg/L (USEPA 8020 MW-2 316/97 9 17 2355 -1438 15 220 33 1 1 2 5 2 3 <3 5/19/97 2326 -14 09 100 <0 5 <0 5 <0 5 <0 5 NA 8/21/97 24 14 -1497 240 20 <0 5 18 5 3 NA 11/17/97 25 16 -1599 290 48 <0 5 31 2 8 NA 2/11/98 2145 -1228 69 2 8 <0 5 1 1 055 NA [2] 5/21/98 1865 -9 48 <50 <0 5 <0 5 <0 5 <0 5 NA [2] 8/11/98 1883 -966 210 361 <0 5 776 862 <5 11/9/98 1993 -I0 76 206 0 893 <0 5 2 87 0 832 <5 5/25/98 18 58 -941 636 0 553 <0 5 109 2 15 <5 8/18199 1957 -104 124 2 0 585 0 929 0 748 <5 10/11/99 2206 -12 89 130 <0 5 <0 5 091 <0 5 NA [2] 3/1/00 1881 -9 64 120 <0 5 <0 5 <0 5 <0 5 NA [2] 6/1/00 1847 -93 110 <0 5 <0 5 <0 5 <0 5 NA[2] 8/30/00 19 19 -1002 <50 <0 5 <0 5 <0 5 <0 5 NA[2] 11/21/00 2004 -1087 77 <0 5 <0 5 <0 5 <0 5 NA[2] 3/8/01 1941 -1024 0 051 <0 5 <0 5 <0 5 <0 5 NA[2] 5/17/01 1948 -1031 <50 <0 5 <0 5 <Q 5 <0 5 NA[2] 8116101 20 82 -11 6S 120 <0 5 <0 5 <0 5 <0 5 NA[2] 12/6/01 2169 -1252 66 <0 50 <0 50 <0 50 <0 50 NA[2] 2114102 2041 -1124 71 <0 50 <0 50 <0 50 <0 50 NA[2] 5/3/02 2040 -1123 57 <0 50 <0 50 <0 50 <0 50 NA[2] *=The method reporting limits was elevated due to high analyze concentration requiring sample dilution <=Less than the detection limits used by laboratory TPHG=Total petroleum hydrocarbons as gasoline MTBE=Methyl tertiary butyl ether NA=Not analyzed NA[2]=See Table 2(MTBE analysis by USEPA Method 8260) bgs N below ground surface nisi=mean sea ievei IB(._Stockton_Quarterly Data xls Page 2 of 2 SrRATU5