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s <br /> - i <br /> SEQUOIA ANALYTICAL RECEIVED MAY 3 MI <br /> d 680 Chesapeake Drive • Redwood City,CA 54063 <br /> R, (415)364-9600 • FAX(415)364-9233 <br /> I <br /> i <br /> ,: <br /> s"..."" ..,.'a[rS„�`'. ' eiio�"..0 « "'�"�'� +c.a.'V""•'scrs..::,.,,.c,....„ <br /> Waterwork Client ProjectBS <br /> 1D:R on,388 T <br /> 21710 Main Street <br /> I ► Escalan,CA 95320 2 <br /> Attentlon. Bill Channell QC Sample Group: 10d'-2W Re rted:Ma i, 1991 <br /> QUALITY CONTROL DATA REPORT <br /> i., <br /> ANALYTE <br /> tom° Diesel <br /> Method: EPA 5015 <br /> Analyst: FL lee <br /> Reporting Units: ng <br /> Date Analyzed: Apr z2 19g1 <br /> QC Sample#: Dewo41gg1 <br /> Sample Cone.: N.D. <br /> 5, <br /> 6-- <br /> Spike Conc. <br /> Added: 900 <br /> i <br /> Conc.Matrix <br /> k" <br /> � i <br /> Spike: 650 <br /> Matrix Spike <br /> %Recovery: 72 <br /> Conc.Matrix <br /> Spike Dup.: 720 <br /> Matrix Spike <br /> Duplicate <br /> %Recovery: 80 <br /> Relative <br /> %Difference;-------10 ---- -- ----- --- ---- -------- - =--- - ---- -- `- <br /> -" SE UOIA ANALYTICAL %Recovery: Conc.of M.B.•Conc,of Sample x 100 <br /> Spike Conc.Added <br /> (alive%Difference: Conc.of M.S.•Conc:of M.S.O, x 100 <br /> geifzabe6h .(a5cA�g (cone.ofM.S.+Cone.ofM.S.D.) z <br /> )jcManager 10029E38.WAT <11> <br />