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•t '` QUALITY CONTROL REPORT Y <br /> boratory Control Sample/Laboratory Control Sample Duplicate <br /> ethod 8020 <br /> edium Level LP# 7639A <br /> Analyst TL Batch # 930601-0901 <br /> Date Of Analysis 06/)1/93 Spike Sample ID _ LCS LCSDS-67 _ <br /> Column DBWax Spike ID Code W-1-706 <br /> Instrument # 6 Surrogate ID Code W-1-681 <br /> Matrix Soil Units _ gzKg <br /> (a) (b) (e) (a) (e) (0 ($) <br /> SAMPLE ACCEPTANCE <br /> SAMPLE DUP LIMPTS <br /> EPA <br /> + + SPIKE <br /> SAMPLE SPIKE SPIKE SPIKE SPIKE D UP <br /> ETHOD COMPOUNDS CONC CONC CONC <br /> REC% CONC REC % RPD% % REC RPD <br /> 8020 Chlorobenzene 0 00500 00478 96 00462 92 � <br /> 3 75- 13 X25 <br /> 8020 Benzene 0 00500 00479 96 00460 92 <br /> 4 75- 1?5 C25 <br /> 8020 Ethyl Benzene 0 0 0500 0 0480 96 00470 94 <br /> 75 - I?5 C?5 <br /> Spike Recovery a d a ((c-a)/b) � 100 <br /> Spike Duplicate Recovery f — ( (e-a)/b) x 100 <br /> Relative Percent Difference g = ( fc-eJ )/( (c+e) x 5) x 100 <br /> SAMPLE <br /> SAMPLE DUP ACCEPTANCE <br /> SUR + + SUR SUR DUP LIMITS <br /> EPA SURROGATE SPIKE SUR. SPIKE SUR <br /> 1dR1HOD COMPOUNDS DET CONC CONC REC. % SPIKE RECOVERY <br /> CONC % % REC <br /> 8020 o-Chlorototuene PID 20 0 17 3 g6 <br /> 16'1 82 56- 131 <br /> Surrogate % Recovery j _ (i/h) x 100 <br /> Surrogate Dup % Recovery 1 m (k/h) x 100 <br /> MBT Environmental <br /> Laboratories ` <br />