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i • � <br /> TABLE 1 <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 EDC EDB GW Elevation Elevation <br /> Number Date (ug/L) (ug/L) (ug1L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug1L) (ug/L) (ug/L) (ugIL) (ug/L) (ug1L) (feet) (feet sea level) (feet sea level) Comments <br /> VW-1 03126/99 260000 3000 1800 9100 44000 49 <10 <10 <10 250 1700 220000 na na 41 56 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 as ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 3V-44' 12/09199 ns ns ns AS ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 02121/00 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 05/18/00 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 09126100 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nrn dry <br /> 12/21/00 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 03127/01 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 /> VW-2 03/26/99 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm nm dry <br /> screened 06/02199 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm slight odor 1 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 /> 16-25' 12/09/99 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 02/21/00 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 05/18/00 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 09126/00 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 12121100 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 03/27/01 ns ns ns ns ns ns ns ns ns ns ns ns ns ns dry nm dry <br /> 06/26101 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 /> 419gmr01)de Page 6 of 7 HORIZON ENVIRONMENTAL INC <br /> 141944 <br />