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__NORTH <br /> = CREEK <br /> _ =ANALYTICAL <br /> 18939 120th Avenue N E,Suite 101 •Bothell,WA 98011-2569 <br /> Phone (206)481-9200-FAX (206) 485-2992 <br /> Steffen Robertson& Kirsten Client Protect ID Diamond Lumber#32504 22 Analyst D Vand]lS9*92 <br /> 15311 NE 90th Street Method EPA 7421 <br /> Redmond.WA 98052 Sample Matrix Water Digested Apr 10,Attention Dave Schwieger Units Ng/L Analyzed Apr 28,oC Sample # BLK041092 Re rted A r 29, <br /> +a�Uca�„aTa.Saot,� w�w,s'•.ae:v.�;u.�Z��,a� cw�yw.a .w��`�' .b.Cw�2af." <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE <br /> Pb <br /> Sample Cone: N D <br /> Spike Cone. <br /> Added• 30 <br /> 1 <br /> Conc. Matrix <br /> IRSpike: 30 <br /> Matrix Spike <br /> %Recovery: 100 <br /> Conc. Matrix <br /> Spike Dup.: 26 <br /> ' Matrix Spike <br /> Duplicate <br /> % Recovery. 87 <br /> Relative <br /> ' % Difference: 14 <br /> 3 <br /> I&TH CREEK ANALYTICAL Inc �Recove Conc of M S "Cone of Sam le x loo <br /> rY' P <br /> ' Spike Conc Added <br /> Relative%Difference Conc of MS -Cone of M S 0 x 100 <br /> $ CiocanGur (Cone of M S + Conc of M S D) 2 <br /> �boratory Director <br /> 2040434 SRK <4> <br />