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=NORTH <br /> CREEK <br /> w ANALYTICAL <br /> 18939 120th Avenue N E ,Sude 101 '80thell,WA 98011-2569 <br /> Phone (206) 481-9200• FAX(206)485-2992 <br /> Steffen Robertson S I{Irsten Cilent Project ID Diamond Lumber 32504 22 Analyst M Essig <br /> 15311 NE 90th Street Method EPA 5030/8020 K Wilke <br /> Redmond,WA 98052 Sample Matrix. Water <br /> Attention Dave Schwie$er Units . L � P ' <br /> QC Sam a �. 204-0413 Anal � A r �. 1992 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl <br /> t3entons Toluene benzene Xylenes <br /> Sample Cone.: N D N D N D N D <br /> Spike Cone <br /> Added: 50 50 so 150 <br /> Cone Matrix <br /> 10 Spike: 52 42 48 134 <br /> Matrix Spike <br /> % Recovery. 104 84 96 89 <br /> Cone. Matrix <br /> Spike Dup : 50 44 so 142 <br /> ' Matrix Spike <br /> Duplicate <br /> % Recovery: 100 88 100 95 <br /> 1, Relative <br /> % Ditierence- 39 47 41 58 <br /> i <br /> s� <br /> H CREEK ANALYTICAL Inc %Secovery Cone of M S -Conc of Sample x 100 <br /> Spike Cone Added <br /> Ftslat+ve%Ortference Cone of M S -Cone of M S 0 x�0Q <br /> CocanoJr (Cont of M S + Conc of M S 0? 2 <br /> story Director <br /> 2640434 SFtK <3> <br />