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i <br /> CAMBRIA <br /> Table 3 <br /> Historical Grab-groundwater Sample Results <br /> Chevron Service Station#9-1848, 1257 West Yosemite Avenue Manteca,California <br /> Sample ID Depth(fbg) Date Sampled TPHg Benzene Toluene Ethylbenzene Xylenes MTBE DI PE ETRE TAME TBA 1,1-DCA EDB Ethanol Oxygenates Methane <br /> Concentrations In micrograms per liter 1L <br /> B-1 8/25/1997 <50 <0 5 <0 5 <0 5 <0 5 ND <1,000 <br /> B-2 8125/1997 <50 <0 5 <0 5 <0 5 <0 5 - - ND <1,000 <br /> B-3 8/25/1997 <50 <0 5 <0 5 <0 5 <0 5 - - ND <1,000 <br /> B-4 8/25/1997 <50 <0 5 <0 5 <0 5 <0 5 - - - - - ND <1,000 <br /> B-5-W-20 20 1/292006 <50 <0 5 <0 5 <0 5 <0 5 2 <0 5 <0 5 <0 5 <5 0 <0 5 <0 5 <50 - <br /> B-5-W-30 30 1/25/2006 <50 <0 5 2 <0 5 <0 5 42 <0 5 <0 5 <0 5 <5 0 <0 5 <0 5 <50 <br /> B-5-W-40 40 1/25/2006 <50 <0 5 07 <0 5 <0 5 8 <0 5 <0 5 <0 5 12 <0 5 <0 5 <50 <br /> B-6-W-24 24 1/25/2006 <50 <0 5 <0 5 <0 5 <0 5 <0 5 <0 5 <0 5 <0 5 <5 0 <0 5 <0 5 <50 <br /> B 6-W-31 31 1/25/2006 <50 <0 5 <0 5 <0 5 <0 5 26 <0 5 <0 5 <0 5 <5 0 <0 5 <0 5 <50 <br /> B-6 W-40 5 405 1/25/2006 <50 <0 5 07 <0 5 <0 5 <0 5 <0 5 <0 5 <0 5 <5 0 <0 5 <0 5 <50 <br /> B-7-W-20 20 1/25/2006 <50 <0 5 <0 5 <0 5 <0 5 <0 5 <0 5 <0 5 <0 5 <5 0 <0 5 <0 5 <50 <br /> B-7-W-30 30 1/25/2006 <50 <0 5 05 <0 5 <0 5 4 <0 5 <0 5 <0 5 <5 0 <0 5 <0 5 <50 <br /> B-7-W-40 40 U25/2006 <50 <0 5 <0 5 <0 5 <0 5 7 <0 5 <0 5 <0 5 11 <0 5 <0 5 <50 <br /> Abbreviations <br /> fbg—Feet below grade <br /> TPHg—Total petroleum hydrocarbons as gasoline by N CA LUFT Gasoline Method <br /> BTEX=Benzene,toluene,ethylbenzene,and xylenes by EPA Method 8260E <br /> MTBE=Methyl ternary butyl ether by EPA Method 8260B <br /> DIPE—Dr isopropyl ether by EPA Method R260B <br /> ETBE=Ethyl t butyl ether by EPA Method 8260B <br /> TAME=t Amyl methyl ether by EPA Method 82608 <br /> TBA=t Butyl alcohol by EPA Method 8260B <br /> 12 DCA=1,2 Dtchloroethane by EPA Method 8260B <br /> EDB=1,2 Dtbromoethane by EPA Method 8260B <br /> Oxygenates by EPA Method 8260(refer to laboratory reports for other volatile organics listed under EPA Method 8260) <br /> Methanol by EPA Method 8015 Modified <br /> ND=analytes not present above stated limit ofdetection <br /> <x=below laboratory detection limits <br />