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. To 'I <br /> GROUNDWATER MONITORING DATA <br /> Former Beacon Station No 12419 <br /> 2350 Waterloo Road,Stockton, California <br /> ethyl Depth to TOC GW <br /> Well TPNg benzene toluene benzene xylenes MTBE DIPE ETBE TAME TBA methanol ethanol DCA EDB GW Elevation Elevation <br /> Number Date (ug1L) (ug/L) (ug/L) (ug1L) (ug1L) (uglL) (ug1L) (uglL) (uglL) (ug1L) (ug1L) (uglL) (ug1L) (ug1L) (feet) (feet sea level) (feet sea level) Comments <br /> MWA 1 10120!00 240 <0 50 <0 50 <0 50 <0 50 <0 50 <o 50 <0 50 <0 5o 14 <50 130 23 <0 50 4925 2057 2868 wellhead survey <br /> screened 12/21100 300 <0 50 <0 50 <0 50 <0 50 <50 na na na na na na na na 4759 2702 no odor 1 no sheen <br /> Interval 03!27/01 190 <0 50 <0 50 <0 50 <0 50 <5 0 na na na na na na na na 4631 2574 no odor 1 no sheen <br /> 30 50' 06126101 160 <0 50 <0 50 <0 50 15 <0 50 <0 50 <0 50 <0 50 12 <50 17 16 <0 50 4882 -2825 no odor 1 no sheen <br /> 09/05101 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nc well dry <br /> 11130/01 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 02/26/02 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 05116!02 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry 2210 nm dry <br /> 09113/02 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 12/04102 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 02/17103 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 06/03/03 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 09/18/03 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 11/24/03 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 02/23/04 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> i <br /> VW-1 03/26/99 260000 3000 1800 9100 44000 49 <10 <10 <10 250 1700 220000 na na 41 58 nm nm no odor/no sheen <br /> screened 06/02/99 84000 2000 56000 5400 26000 55 <10 <10 <10 240 4400 99000 35 790 4092 nm slight odor/no sheen <br /> interval 08/31/99 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 34'-44 12/09/99 ns ns n5 ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 02!21100 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 05118100 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 09!26100 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 12/21/00 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 03/27101 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 06/26/01 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 09/05/01 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 11/30/01 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 02/26/02 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 05/16/02 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry 2242 nm dry <br /> 12104!02 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 02/17/03 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 06/03/03 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 09!18103 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 11124/03 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 02123!04 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 41 AS <br /> Page 11 of 13 HORIZON ENVIRONMENTAL INC <br /> N1 <br /> Protectjest No 1419 47 9 <br />