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Woodward-Ctyde Consultants <br /> ,'- Labcratory Accuracy Summary <br /> Analysis BTEX CDC; 900072 <br /> WCC Lab ID: 900072-01 <br /> Concentration Units: mg/kg <br /> SPIKE I <br /> Diluted True Internal <br /> Concentration Concentration Accuracy <br /> - <br /> Parameter Sample Spiked Sample ---Spike-----� %-Recovery <br /> ------------ --------- -------7- <br /> BENZENE ND 6.8 9.5 71 <br /> TOLUENE NC 7 9.6 83 <br /> ETHYLBz:'7ENE ND 7.9 9.5 2i <br /> XYLENES ND 7.8 G.5 <br /> SPIRE 2 <br /> ( ' Diluted True Internal i <br /> Concentration Concent=aticn Accuracv <br /> -Sa-ple Spiked-----------------Sample - Sp_ke^ --- Recover <br /> Parameter <br /> y <br /> �,0 85 <br /> ------ - ------- - ------�- --.----.--- <br /> -- <br /> BENZENEa <br /> _ N7 <br /> 1 <br /> N7 a.S10 <br /> ETHYL E£';2TENE NC 8• 9 <br /> X_'TENES Nr 9. 1 <br /> Calculations are performed before r=unding to avcid round-off er_crs <br /> in calculated results. <br /> ND - Not Detected: sample contained the parameter nelow the practical <br /> quantitation limit <br /> i <br /> I <br />