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i <br /> • <br /> SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood Oty,CA 94063 <br /> (415)364-9600 • FAX(415)364-9233 <br /> aterwoMINE ecE 376. on, ocktoa <br /> 1710 Main Street <br /> Escalon,CA 95320 <br /> Rttention 'Tina Wage QC Sam a Group'1051336-1340 R rted• 20, 1991 <br /> QUALM CONTROL DATA REPORT <br /> ANALYTE <br /> n� <br /> Method EPAE015 <br /> Analyst: rt Les <br /> Reporting Unita' no <br /> Date Analyzed May 14, 1991 <br /> QC Sample DBLK0513!91 <br /> x <br /> Sample Cone.: N D ; <br /> aSpike Conc. <br /> Added: 900 <br /> R <br /> Cont.Matrix <br /> Spike: 550 <br /> Matrix Spike <br /> %Recovery: 61 <br /> Conc.Matrix <br /> Spike Dup• 540 <br /> Matrix Spike <br /> Duplicate <br /> %Recovery: 60 <br /> Relative <br /> %Difference: 16 <br /> SE UOIA AAAI-Yit At. x a.00rrry' of =100 <br /> Nw—Add <br /> Fbktlw%DN%mrm Corte.of M.$.•CWAL of M 5.0 a 100 <br /> t o1 + a <br /> P oiect Manager 1061338.WAT <3> <br /> • <br />