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SERVICES, <br />INC. <br />COLUMBIA <br />ANALYTICAL <br />Analytical <br />Results <br />Client: Shaw Environmental & Infrastructure, Inc <br />Service Request: P0700116 <br />Project: Foothill Landfill, San Joaquin <br />County/791289 <br />(Leachate Module). <br />Date Collected: NA <br />Sample Matrix: Water <br />Date Received: NA <br />Volatile Organic Compounds <br />Sample Name: Method Blank <br />Units: ug/L <br />Lab Code: PWG0700310-4 <br />Basis: NA <br />Extraction Method: EPA 5030B <br />Level: Low <br />Analysis Method: 8260B <br />Dilution <br />Date <br />Date <br />Extraction <br />Analyte Name <br />Result Q <br />PQL <br />MDL <br />Factor <br />Extracted <br />Analyzed <br />Lot Note <br />Bromoform <br />ND U <br />1.0 <br />0.41 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />Bromomethane <br />ND U <br />1.0 <br />0.61 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />Carbon Disulfide <br />ND U <br />2.0 <br />0.83 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />Carbon Tetrachloride <br />ND U <br />0.50 <br />0.48 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />Chlorobenzene <br />ND U <br />0.50 <br />0.36 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />Chloroethane <br />Chloroform <br />ND U <br />ND U <br />1.0 <br />0.50 <br />0.46 <br />0.40 <br />1 <br />1 <br />02/13/07 <br />02/13/07 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />PWG0700310 <br />Chloromethane <br />ND U <br />1.0 <br />0.40 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />cis-1,2-Dichloroethene <br />ND U <br />0.50 <br />0.39 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />cis-1,3-Dichloropropene <br />ND U <br />0.50 <br />0.34 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />Dibromochloromethane <br />ND U <br />1.0 <br />0.33 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />Dibromomethane <br />ND U <br />0.50 <br />0.39 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />Dichlorodifluoromethane <br />ND U <br />1.0 <br />0.48 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />Diisopropyl Ether <br />ND U <br />2.0 <br />0.66 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />Ethanol <br />ND U <br />100 <br />73 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />Ethylbenzene <br />ND U <br />0.50 <br />0.41 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />Hexachlorobutadiene <br />ND U <br />1.0 <br />0.46 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />Iodomethane <br />ND U <br />10 <br />0.77 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />Isopropylbenzene <br />ND U <br />1.0 <br />0.34 <br />1 <br />02/13/07 <br />02/13/07 <br />PWO0700310 <br />Total Xylenes <br />ND U <br />1.5 <br />1.1 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />Methyl tert-Butyl Ether <br />ND U <br />2.0 <br />0.71 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />Methylene Chloride <br />ND U <br />2.0 <br />0.43 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />n-Butylbenzene <br />ND U <br />1.0 <br />0.37 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />n-Propylbenzene <br />ND U <br />1.0 <br />0.41 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />Naphthalene <br />ND U <br />1.0 <br />0.36 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />sec-Butylbenzene <br />ND U <br />1.0 <br />0.37 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />Styrene <br />ND U <br />0.50 <br />0.37 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />tert-Amyl Methyl Ether <br />ND U <br />2.0 <br />0.72 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />tert-Butyl Alcohol <br />ND U <br />20 <br />8.7 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />tert-Butyl Ethyl Ether <br />ND U <br />2.0 <br />0.64 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />tert-Butylbenzene <br />ND U <br />1.0 <br />0.41 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />Tetrachloroethene (PCE) <br />ND U <br />0.50 <br />0.38 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />Toluene <br />ND U <br />0.50 <br />0.36 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />trans-l,2-Dichloroethene <br />ND U <br />0.50 <br />0.43 <br />1 <br />02/13/07 <br />02/13/07 <br />PWO0700310 <br />Comments: <br />Printed: 02/16/2007 08:34:31 <br />Form I <br />- Organic <br />Page 2 of 3 <br />P:\STEALTH\CRYSTAL.RPT\Formlm.rpt Merged <br />SuperSetReference: RR13372 <br />