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w .=NORTH <br /> r =wCREEK <br /> -MANALYT'ICAL <br /> E18939 120th Avenue N E= , Suite 101 • Bothell, WA 98011-2569 <br /> Phone (206)481-9200• FAX (2D6)485.2992 <br /> kY. MOrNm <br /> Steffen Robenson R Kirsten Client Project 1D Diamond Lumber,Manle CrA� Analyst M Es_ig <br /> X15311 NE 90th Street Method EPA 7421 <br /> #Redmond, WA 98052 Sample Matrix Water Dlgesled Oct 21, 1991Attention Rob Gwl m <br /> f <br /> Units Ng/L Analyzed Oct 22,' 1991#t QC Sample # 110-0685 Reported2 1N&, <br /> „ ^+• rOct� t ur <br /> h-ifJi2{Y2p� <br /> f <br /> ' QUALITY CONTROL DATA REPORT <br /> ANA!~YTE <br /> Sample Conc 95 <br /> Spike Conc <br /> Added 30 <br /> Conc Matrix <br /> Spike 40 <br /> Matrix Spike <br /> % Recovery 102 <br /> Conc Matrix <br /> Spike Dup 38 <br /> Matrix Spike <br /> Duplicate <br /> % Recovery 95 <br /> Relative <br /> % Difference- 4 9 <br /> CREEK ANALYTICAL_ x Recovery Conc of M S Conc of Sampie x tppSpike Conc AddedtTH <br /> Relauve%Difference Conc of M S -Conc of M S o x top <br /> Cocanour {Conc of M S + cont of M S D) 2 <br />�boratory Director <br /> 1100685 SRK <s> <br />