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_ NORTH <br /> CREEK <br /> ANALYTICAL <br /> 18939 120th Avenue N.E.,Suite 101 -Bothell,WA 98011.2569 <br /> 1 Phone (206)481-9200-FAX(206)485.2992 <br /> WORM 1001111IN11811 III =;Am <br /> teffen Robertson& Kirsten Client Protect ID: Diamond Lumber-Lodi, #32504.24 Analyst: D.Vandel <br /> 1 15311 NE 90th Street Method : EPA 7421 <br /> Redmond,WA 88052 Sample Matrix: Water Digested: Apr 10, 1992 <br /> Attention: Dave Schwieger Units : ug/L Analyzed: Apr 28, 1992 <br /> r. <br /> .;::..::.�..:...;.., �......t. . . ..>,... QC Sam 041092 <br /> Sample � BLK Reported: r 29, 1992 <br /> ..ww:•wf.£+k. ,,::AW�..cde,L�aaa':.y..xc�;:t:Ss:««3icd 3twC°•G`x:���,3,1.:` «uAS::�Y �:r�1J�t'.,...:::xM,::ie:c$aGii;:.L�Tf'<-f•%".�u�:i%+:.< a:£�Sii}..c+R.;`;.;;'n• <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE <br /> Pb <br /> Sample Conc.: N.D. <br /> Spike Conc. <br /> Added: 30 <br /> Conc. Matrix <br /> Spike: 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 /> RTH CREEK ANALYTICAL Inc %Recovery: Conc.o1 M.S.-Conc.of Sample x 100 <br /> Spike Conc.Added <br /> Relative%Difference: Conc.of M.S.-Conc.of M.S.D. x 100 <br /> t Cocanour (Conc.of M.S. + Conc.of M.S.D.) 2 <br /> Laboratory Director 2040431.SRK <4> <br />