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CHEMWEST ANALYTICAL LABORATORIES <br /> AROMATIC VOLATILE ORGANICS <br /> EPA METHOD: 8020 <br />' Quality Control <br /> Client ID: LQCS Gc-6 CHEMWEST ID: 9996-QC1 <br />' Date Analyzed: 09/16/92 Matrix : Soil <br /> Spike % % <br />' Conc. Recovery Recovery <br /> Compound (UG/KG) 9996-MBS 9996-S1 RPD <br /> ------------------------------------------------------------------- <br /> Benzene 10. 0 88% 100% 13% <br /> Toluene 10. 0 88$ 101% 14% <br /> Ethylbenzene 10. 0 88% 101% 14% <br /> Total Xylenes 30. 0 87% 100% 14% <br /> ' Chlorobenzene 10. 0 87% 100% 14% <br /> 1, 3-Dichlorobenzene 10. 0 88% 101% 14% <br /> 1,4-Dichlorobenzene 10. 0 87% 100% 14% <br /> 1,2-Dichlorobenzene 10. 0 86% 99% 14% <br /> ' ----------------------------Spike -_-_------�----------�----------- <br /> Conc. Recovery Recovery <br /> Surrogate (UG/KG) 9996-MBS 9996-S1 <br /> ' --------------------------------------------------------------------- <br /> Bromofluorobenzene 20 133% 129% <br /> --------___--------------------------------------------------------- <br /> 1 <br /> ' Date Reported: <br /> Approved by: )V 09/23/92 REV4 . 1.9089 <br /> ' COMPUCHEM WESTERN DIVISION <br />