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Superior Precision Ana/ytica/,Inc. <br /> u. 1555 Burke, Unit I • San Francisco, California 94124 • X415 647-2081 /fax (4 15) 821 7123 <br /> EPA SW-846 METHOD 8270 SEMIVOLATILE ORGANICS BY GC/MS <br /> Quality Assurance and Control Data - Soil <br /> Laboratory Number 15540 <br /> Method Spike <br /> Compound Blank RL Recovery Limits RPD <br /> (ug/Kg) (ug/Kg) M M M <br /> 2-chloronaphthalene: ND<300 300 <br /> 2-nitroaniline: ND<800 800 <br /> acenaphthylene: ND<300 300 <br /> dimethylphthlate: ND<300 300 <br /> 2, 6-dinitrotoluene: ND<300 300 <br /> acenaphthene: ND<300 300 74/77 55-112 4% <br /> 3-nitroaniline: ND<800 800 <br /> 2, 4-dinitrophenol : ND<800 800 <br /> dibenzofuran: ND<300 300 <br /> 2, 4-dinitrotoluene: ND<300 300 72/73 40-101 1% <br /> 4-nitrophenol: ND<800 800 60/65 11-157 8% <br /> fluorene: ND<300 300 <br /> 4-chlorophenyl-phenyle: ND<300 300 <br /> diethylphthlate: ND<300 300 <br /> 4-nitroaniline: ND<800 800 <br /> 4 , 6-dinitro-2-methylph: ND<800 800 <br /> n-nitrosodiphenylamine: ND<400 400 <br /> 4-bromo-phenyl-phenyle: ND<300 300 <br /> hexachlorobenzene: ND<300 300 <br /> pentachlorophenol: ND<800 800 65/69 17-144 6% <br /> phenanthrene: ND<300 300 <br /> anthracene: ND<300 300 <br /> di-n-butylphthlate: ND<300 300 <br /> fluoranthene: ND<300 300 <br /> benzidine: ND<2000 2000 <br /> pyrene: ND<300 300 79/81 55-136 3% <br /> butylbenzylphthlate: ND<300 300 <br /> 3 . 31-dichlorobenzidine: ND<700 700 <br /> benzo(a]anthracene: ND<300 300 <br /> Page 6 of 7 <br /> Certified laboratories <br />