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Reviqved and Approved <br />4L14E6 i <br />John A. Murphy <br />Laboratory Director <br />Page 5 Of 5 <br />P. O. Box 5624 • South San Francisco. California 94083 • 650-588-2838 FAX 588-1950 <br />©© North State Environmental <br />© Chemical Waste Disposal • Trucking • Consulting <br />CERTIFICATE <br />OF ANALYSIS <br />Job Number: 98_305 <br />Date <br />Sampled : 03/18/98 <br />Client : Semco <br />Date <br />Analyzed: 03/19/98 <br />Project : Corral <br />Hollow Rd. <br />Date <br />Reported: 03/30/98 <br />Volatile Organics <br />by GC/MS Method 8260 <br />Quality Control/Quality Assurance Summary <br />Laboratory Number <br />98-305 <br />MS/MSD <br />RPD <br />Client ID <br />Blank <br />Recovery <br />Matrix <br />SOIL <br />SOIL <br />Analyte <br />Results <br />%Recoveries <br />ug/Kg <br />Ethanol <br />ND<2500 <br />Methyl -t -Butyl Ether <br />ND<5 <br />Di -isopropyl Ether <br />ND<5 <br />tertiary Butyl Alcohol <br />ND<5 <br />Ethyl -t -Butyl Ether <br />ND<5 <br />t -Amyl Methyl Ether <br />ND<5 <br />1,1-Dichloroethene <br />ND<5 <br />104 <br />2 <br />Benzene <br />ND<5 <br />117 <br />12 <br />Trichloroethene <br />ND<5 <br />105 <br />11 <br />Toluene <br />ND<5 <br />113 <br />11 <br />Chlorobenzene <br />ND<5 <br />117 <br />11 <br />SDR-Dibrounofluoromethane <br />87 g Rec <br />113/103 <br />9 <br />SDR -Toluene -d8 <br />99 % Rec <br />109/109 <br />0 <br />SDR-9-Bromofluorobenzene <br />95 % Rec <br />115/113 <br />2 <br />Reviqved and Approved <br />4L14E6 i <br />John A. Murphy <br />Laboratory Director <br />Page 5 Of 5 <br />P. O. Box 5624 • South San Francisco. California 94083 • 650-588-2838 FAX 588-1950 <br />