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ar . <br /> m .. <br /> .� SEQUOIA ANALYTICAL RECEIVED MAY 3 <br /> 680 Cl*saWake Drive • Redwood City.CA 94063 <br /> (415)364.96W • FAN(415)364-9233 <br /> Watenwrk pleat Project li} Fiesves Exxon,388 <br /> 1710 Main Street <br /> r` Escalon,CA 9x320 <br /> AttetlYlon: S71 Channefi ' <br /> OC Sample Groqp., 1042984 Re ed:Mav 1. 1991 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYI"E ' <br /> Dieser <br /> Ma!hod: EPA80I5 <br /> AFL nalyst- <br /> w <br /> r <br /> Reporting <br /> l Date Analyzed: Apr 22. 1991 <br /> �i QC Sample#: DBLK041991 <br /> i <br /> Sample Cone.: N.D. <br /> Spike Cone. <br /> t Added: <br /> ;•„ Cone.Matrix <br /> Spike: 650 <br /> -- Matrix Spike <br /> %Recovery: 72 <br /> L' Cone.Matrix <br /> Spike Dup.: 720 <br /> _. Matrix Spike <br /> Duplicate <br /> %Recovery: 80 <br /> Relative---- ----------_ - -------- -- -------- ---- --------------- <br /> - - -%Difference: 10 <br /> l <br /> i r <br /> �.EQUOIA ANALYTICAL %Aeco�r <br /> Cane.of M.S.•Can of Sample x 100 <br /> Spike Cone.Added <br /> A <br /> lative%Dt}terrnee: Cane.o!M.S..Cane.at M.S.D. 100 <br /> �-E,zabeth ac tCone.a!M.S. +Canc.a!6t.S.D.1 2 <br /> f'raject Manager <br /> :042988.WA? c t i a <br />