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CORTH <br /> REEK <br /> ANALYTICAL <br /> ,. 18939120th Avenue N E,Suite 101 .-Bothell,WA 98011-2569 <br /> Phone (206) 481-9200• FAX (206) 485-2992 <br /> K^'�o"S`�ht�ss�eSep s�� ^^ s.,„.,;2,. wr.a ca.++r. �,� ti..^ovat <br /> A'-`wC'v.,aa��C...�wac,.,.�.°,S.w.,L�h.n.:w�ien.3.v,.4 Q}ew�a.ayt,:Sc.,hb.'`a:�a,.'`v�.hs'4„ia� �aaa �tY� ,t. <br /> <Steffen Robertson&Kirsten Client 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 Schwleger Units pg/L Analyzed Apr 20, 1992)f <br /> '} v CC Sample # 204-0413 Reported Apr 29 1992 <br /> f . vA <br /> 4 4}. , A : Z r.,y.,.. am� <br /> • u fv,n wfiwzkbo- r,w. ��r�t„,aJv Snw w,.-<$ka`Rkc.� Fi,�.¢.`��`x�,o?�iihsa..a,u " c } <br /> rQUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl <br /> Benzene Toluene benzene Xylenes <br /> Sample <br /> Conc ND ND ND ND <br /> Spike Conc. <br /> Added 50 50 50 150 <br /> Conc. Matrix <br /> Spike* 52 42 411 134 <br /> Matrix Spike <br /> I %Recovery 104 84 96 89 <br /> Conc Matrix <br /> Spike Dup : 50 44 50 142 <br /> Matrix Spike <br /> Duplicate <br /> %Recovery 100 88 100 95 <br /> ' Relative <br /> % Difference 39 47 41 58 <br /> M CREEK ANALYTICAL Inc %Recovery Conc of M S -Conc of Sample x 100 <br /> Spike Conc Added <br /> Relative%Difference Conc of MS -Cone of M S D x 100 <br /> t COcanour (Conc of M S + Conc of M S D)/2 <br /> faboratory Director <br /> 2040434 SRK <3> <br />