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- a <br /> r <br /> SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City,CA 94063 <br /> (415)364-9640 FAX(415)364-9233 <br /> i. 3:.,,.1..x. ..,.i>.��..;.,,:��.w.,....-'<u%di.i.�...,.--v.:w.,,.0 Y ..iii..,'.FM.«��+w�.asra,..ncs�.y;,.'�sf•.,' -. T _ rir�.is ,.-.- y#.,. �a � ^�x:.v�m- <br /> uM �:.a.,;ruvc:.cu....w:fs,.,.......,.,.cw::r,.oz...»ac.w.u�u,.r»..�,....,�-,. .t.w..,...». ......... .........»> .......K.,< <br /> :AWaterwork Client Project 10: Eckhoim <br /> 1710 Main Street <br /> QFscalon,CA 35320 <br /> Attention: Bill Channell QC Sample Group: 104-3733 Reported May 6, 1991 <br /> QUALITY CONTROL.DATA REPORT <br /> ANALYTE <br /> PCS 1260 <br /> Method: EPA 8= <br /> Analyst: D.Tran <br /> Reporting Units: pg/kg <br /> Date Analyzed: Apr 23, 1991 <br /> QC Sample#: Btx 042291 <br /> Sample Conc.: N.D. <br /> Spike Conc. <br /> Added: 1,000 <br /> Conc.Matrix <br /> Spike: 1,100 <br /> Matrix Spike <br /> %Recovery: 110 <br /> Conc.Matrix <br /> Spike Dup.: 1,040 <br /> Matrix Spike <br /> Duplicate <br /> %Recovery: 100 <br /> Relative <br /> %Difference: 9.5 <br /> S [A ANALYTIC L Recovary Cosec.or M.S.-Cork.of Sam !e r 100 <br /> Spike Conn.Added, <br /> t AelelM%Detforence: Con,.of M.S.-Conc.of M.S D. x 100 <br /> beth h{a Cone.of M.S.+Conc.of M.S.D. 2 <br /> rojec't Manager 10437131.WA7 <12a <br />