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TAO <br /> GROUNDWATER MONITORING DATA <br /> Beacon Station No.12474 <br /> 3440 East Main Street,Stockton,California <br /> i� <br /> ii <br /> ethyl- total Depth to TOC GW <br /> Well TPHg benzene toluene benzene xylenes MTBE DIPE ETBE TAME TBA methanol ethanol DCA EDB GW Elevation Elevation <br /> Number Date u 1L u !L u 1L a IL u L u 1L u IL u & u 1L u IL u IL u 1L u IL u 1L feet feet msl feet ms1 Comments <br /> VW-7 03/03/00 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm nm dry <br /> screened 06122100 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm dry <br /> Interval 09128!00 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm dry <br /> 3747' 12122!00 ns_ ns ns ns ns ns ns ns AS ns ns ns ns ns nm nm dry <br /> 03128101 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm dry <br /> 06/27/01 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm dry <br /> 09106/01 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm dry <br /> 12/04/01 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm dry <br /> 03/01/02 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm dry <br /> 05/20/02 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm dry <br /> 03/07/03 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm dry <br /> 06/03/03 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm dry <br /> 08128103 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm dry <br /> 11/25/03 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm dry <br /> 03/01104 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm 25.89 nm dry <br /> 06/08/04 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm not sampled <br /> 09/08/04 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm not sampled <br /> 12/08/04 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm not sampled <br /> 03110/05 ns ns ns ns ns ns ns ns ns ns ns ns ns ns. nm nm not sampled <br /> 05/25/05 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm not sampled <br /> 09/01/05 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm not sampled <br /> 12/14/05 ns ns ns ns ns ns ns ns ns ns ns ns ns ns nm nm not sampled <br /> i? <br /> L <br /> Notes: TPHg=total petroleum hydrocarbons as gasoline DCA=1,2-dichloroethene =less than indicated reporting limit <br /> MTBE=methyl-tert-butyl ether EDB=1,2-dibromoethane ns=not sampled <br /> DIPE=diisopropyl ether GW=groundwater nm=not measured <br /> ETRE=ethyl-tert-butyl ether i' TOC=top of casing nc=not calculated <br /> TAME=tort-amyl-methyl ether msl=mean sea level '=does not exhibit a typical chromatographic pattern <br /> TBA=tert-butanol C <br /> �i <br /> I' <br /> �I <br /> li <br /> II <br /> �l <br /> II <br /> I� <br /> i? <br /> I• <br /> i' <br /> 1' <br /> i <br /> I� <br /> I <br /> I, <br /> I# <br /> H <br /> l <br /> I� <br /> 474gmr05.x1s <br /> Project No.1474.48 1Page 18 of 18 HORIZON ENVIROI BMTAL i:Nc, <br /> r <br />