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NORTH <br /> .�`�CREEK <br /> ANALYTICAL <br /> 18939 120th Avenue N E, Suite 101 • Bothell, WA 98011-2569 <br /> Phone (205) 481-9200 •FAX (206)485-2992 <br /> amb.: r �aA nr�Mc�'a?t+ea"„��ae�•'c rwa waY�inb��rvv�.�»c w��tiKS�.v�w5 Os`wi srn„$�.i'<aaw ��a vii as�aw7„ 3S`rav '.+ryfi` ,X"�3''F' , <br /> a bw�k��aFo-,ei <br /> teffen Robertson& Kirsten Client Project ID Diamond Lumber, Mantea, CA Analyst R Uster <br /> =15311 NE 90th Street Method EPA 5030/8020 S Stowell <br /> Redmond.WA 98052 Sample Matrix Water <br /> Attention Rob Gwilym Units . <br /> m -0LLfi.T.`Er" vvr.- ry.t..rar�:..,,.,.r.ce>.•, ��r..,a,,,,..,..-.e�_a�,..�,.s�..n �.`�"',e.�+r..»a..n�w.`xe991 <br /> QCSample # 110505 Reported Oct 22, 1991 YFt <br /> r� <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl <br /> Benzene Toluene benzene Xylenes <br /> Sample Cone. N D N D N D N D <br /> 4 <br /> Spike Cone <br /> Added. 00050 00050 00050 00150 <br /> Conc. Matrix <br /> 0 Spike: 00044 00042 00048 00134 <br /> Matrix Spike <br /> % Recovery: 88 84 96 89 <br /> Conc. Matrix <br /> Spike Dup : 0004-4 00042 00048 00136 <br /> Matrix Spike <br /> Duplicate <br /> % Recovery: 88 84 96 91 <br /> Relative <br /> % Difference. 0 0 0 22 <br /> t� TH CREEK ANALYTICAL %Recovery Cone of M S -Cone of Sampie x 100 <br /> Spike Conc Added <br /> 6ur (CRelative%Difference Conc ofMS -Conc ofM SD x 100 <br /> ocanoonc of M S + Cone of M S D) 2 <br /> boratory Director 1100685 SRi( <5> <br />