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• <br />Method Blank Summary <br />Job Number: C17729 <br />Account: GEAICAO Giles Engineering Associates, Inc. <br />Project: 239 West 11th Street - Tracy, CA <br />Page 2 of 3 <br />File ID DF Analyzed By Prep Date Prep Batch Analytical Batch <br />-MB M27129.D 1 09/02/11 XB n/a n/a VM861 <br />The QC reported here applies to the following samples: <br />C17729-1, C17729-2, C17729-3, C17729-4, C17729-5 <br />CAS No. Compound <br />Method: SW846 8260B <br />Result RL MDL Units Q <br />591-78-6 <br />2-Hexanone <br />ND <br />40 <br />5.0 <br />ug/kg <br />87-68-3 <br />Hexachlorobutadiene <br />ND <br />5.0 <br />1.0 <br />ug/kg <br />98-82-8 <br />Isopropylbeazene <br />ND <br />5.0 <br />1.5 <br />ug/kg <br />99-87-6 <br />p-Isopropyltoluene <br />ND <br />5.0 <br />1.5 <br />ug/kg <br />108-10-1 <br />4-Methyl-2-pentanone <br />ND <br />40 <br />15 <br />ug/kg <br />74-83-9 <br />Methyl bromide <br />ND <br />5.0 <br />2.5 <br />ug/kg <br />74-87-3 <br />Methyl chloride <br />ND <br />5.0 <br />1.5 <br />ug/kg <br />74-95-3 <br />Methylene bromide <br />ND <br />5.0 <br />2.5 <br />ug/kg <br />75-09-2 <br />Methylene chloride <br />ND <br />25 <br />16 <br />ug/kg <br />78-93-3 <br />Methyl ethyl ketone <br />ND <br />40 <br />12 <br />ug/kg <br />1634-04-4 <br />Methyl Tert Butyl Ether <br />ND <br />5.0 <br />1.0 <br />ug/kg <br />91-20-3 <br />Naphthalene <br />ND <br />5.0 <br />1.5 <br />ug/kg <br />103-65-1 <br />n-Propylbenzene <br />ND <br />5.0 <br />1.5 <br />ug/kg <br />100-42-5 <br />Styrene <br />ND <br />5.0 <br />1.0 <br />ug/kg <br />994-05-8 <br />Tert-Amyl Methyl Ether <br />ND <br />5.0 <br />1.2 <br />ug/kg <br />75-65-0 <br />Tert Butyl Alcohol <br />ND <br />40 <br />10 <br />ug/kg <br />630-20-6 <br />1,1,1,2 -Tetrachloroethane <br />ND <br />5.0 <br />1.0 <br />ug/kg <br />71-55-6 <br />1,1,1 -Trichloroethane <br />ND <br />5.0 <br />1.5 <br />ug/kg <br />79-34-5 <br />1,1,2,2 -Tetrachloroethane <br />ND <br />5.0 <br />1.0 <br />ug/kg <br />79-00-5 <br />1,1,2 -Trichloroethane <br />ND <br />5.0 <br />1.0 <br />ug/kg <br />87-61-6 <br />1,2,3-Trichlorobenzene <br />ND <br />5.0 <br />1.5 <br />ug/kg <br />96-18-4 <br />1,2,3-Trichloropropane <br />ND <br />5.0 <br />1.5 <br />ug/kg <br />120-82-1 <br />1,2,4-Trichlorobenzene <br />ND <br />5.0 <br />1.5 <br />ug/kg <br />95-63-6 <br />1,2,4-Trimethylbenzene <br />ND <br />5.0 <br />1.5 <br />ug/kg <br />108-67-8 <br />1, 3,5 -Trimethylbenzene <br />ND <br />5.0 <br />1.5 <br />ug/kg <br />127-18-4 <br />Tetrachloroethylene <br />ND <br />5.0 <br />3.5 <br />ug/kg <br />108-88-3 <br />Toluene <br />ND <br />5.0 <br />1.5 <br />ug/kg <br />79-01-6 <br />Trichloroethylene <br />ND <br />5.0 <br />1.0 <br />ug/kg <br />75-69-4 <br />Trichlorofluoromethane <br />ND <br />5.0 <br />1.2 <br />ug/kg <br />75-01-4 <br />Vinyl chloride <br />ND <br />5.0 <br />2.5 <br />ug/kg <br />1330-20-7 <br />Xylene (total) <br />ND <br />10 <br />4.0 <br />ug/kg <br />CAS No. <br />Surrogate Recoveries <br />Limits <br />1868-53-7 <br />Dibromofluorometbane <br />98% <br />60-130% <br />1 <br />v <br />Elm 35 of 50 <br />■ AGCUTEBT. <br />C17729 `"•"•••"•"• <br />