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_A NORTH <br /> _=:CREEK <br /> ANALYTICAL <br /> 18939 120th Avenue N.E.,Suite 101 • Bothell,WA 98011.2568 <br /> Phone (206) 481-9200-FAX(206)485.2992 <br /> )Steffen Robertson&Kirsten Client Project ID: Diamond Lumber-Lodl, #32504.24 Analyst : M. Essig <br /> 15311 NE 90th Street Method : EPA 5030/8020 K Wilke <br /> Redmond,WA 98052 Sample Matrix: Water <br /> kkAttentlon: Dave Schwieger Unhs:erg/L Analyzed: Apr 21. 1992 <br /> t QC Sample #::204-0853 y, 199 <br /> 2 <br /> f$:y'Y:Mu.00.koA:S>%Yal6h' .. ..:.:' �r�.li rr:..v..,.rr.'i .'j',#'R....`,.M'r1�,.M1}�^ S` a^ "•M�y»smY�'���tL.. `M <br /> vw ^v <br /> ' QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl <br /> Benzene Toluene benzene Xylenes <br /> Sample Conc.:onc.: N.D. N.D. N.D. N.D. <br /> Spike Conc. <br /> Added: 5.0 5.0 5.0 15.0 <br /> Conc. Matrix <br /> Spike: 5.0 4.8 5.2 15.0 <br /> Matrix Spike <br /> % Recovery: 100 96 104 100 <br /> Conc, Matrix <br /> Spike Dup.: 5.2 5.0 5.2 15.0 <br /> Matrix Spike <br /> Duplicate <br /> %Recovery: 104 100 104 100 <br /> Relative <br /> % Difference: 3.9 4.1 0 0 <br /> kH CRESK ANALYTICAL Inc x Recovery: Conc.of M.S.-Conc.of Sample x too <br /> Spike Conc.Added <br /> Relative%D Herence: Conc.of M.S.-Conc.of M.S.D. x 100 <br /> OCanOttr (Conc.of M.S. + Conc,of M.S.D.) 2 <br /> �boratory Director 2040431.SRK <3> <br />