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Superior Precision Analytical, If7c_ <br /> 1555 Burke Unit I * San Francisco California 94124 ■ (4I 5) 647-2081 / fax {4 15) 82 1-7 123 <br /> METHOD 8270 SEMIVOLATILE ORGANICS BY GC/MS <br /> Quality Assurance and Control Data - Soil <br /> Laboratory Number 14713 <br /> Average <br /> Method Spike <br /> Compound Blank PQL Recovery Limits RPD <br /> (ug/Kg) (ug/Kg) M (�) <br /> chrysene: ND<330 330 <br /> bis(2-ethylhexyl)phtha: ND<330 330 <br /> di-n-octylphthalate: ND<330 330 <br /> benzo(b,k) fluoranthene: ND<700 700 <br /> benzo[a]pyrene: ND<330 330 <br /> indeno[1, 2 , 3-cd]pyrene: ND<330 330 <br /> dibenzo[a,h]anthracene: ND<330 330 <br /> benzo(g,h, i]anthracene: ND<330 330 <br /> 2-fluorophenol: 40% 25-121 <br /> phenol-d5: 69% 24-113 <br /> nitrobenzene-d5: 69% 23-120 <br /> 2-fluorobiphenyl: 88% 30-1.15 <br /> , 6-tribromophenol: 89% 19-122 <br /> phenyl-d14 : 101% 18-1.37 <br /> Definitions: <br /> ND = Not Detected RPD = Relative Percent Difference <br /> PQL = Practical Quantitation Limit ' <br /> QC File No. 14713 7I ' <br /> Se for Chemist <br /> Account Manager <br /> Page 7 of 7 <br /> Certified Laboratories <br />