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SEQUOIA ANALYTICAL <br /> 680 Chesapeake Dnve • Redwood City,CA 94M <br /> (415)364-9600 • FAX(415)364-9233 <br /> atefwo ent Pro ed ID 378, evron, oc n <br /> 1710 Main SUvet <br /> Escalon,CA 95320 <br /> Attention Tina LePa a OC Samye Grow 105133&1340 Reported 20, 1991 <br /> QUALITY COWROL DATA REPORT <br /> ANALYM <br /> Dxee•x <br /> Method EPA8015 <br /> Analyst R Leo <br /> Reporting Units no <br /> Date Analyzed May 14. 1991 <br /> QC Sample# DBLK 051391 <br /> x <br /> Sample Conc.. N D <br /> Spike Cone. <br /> Added: 900 <br /> Conc.Matrix <br /> Spike 550 <br /> Matrix Spike <br /> %Recovery 61 <br /> Conc.Matrix <br /> Spike Dup: 540 <br /> Matrix Spike <br /> Duplicate <br /> °fin Recovery 60 <br /> Relative <br /> %Difference. 16 <br /> St: 4J0[A ANALYTICAL %faeaowty VOnC a of 9MRIG Y too <br /> Uro Add•d <br /> hla "%DWereno• Cana or M 9 -Cone.of KS D x 100 <br /> to � awAT <s�t nc ;FM- + m or M D 2 <br /> PjectManager <br />