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• <br /> , <br /> 6 <br /> fi <br /> IN <br /> i ;• <br /> SEQUOIA ANALYTICAL <br /> t 680 Chesapeake Drrre * redwood City,CA 94063 <br /> (415)364-9600 FAX(415)364.9233 <br /> =0mm <br /> .. '.. � <br /> Waterwork Client Project ib:.W0388,Reeves'Ei .on <br /> 11 1 p Main StreetcalonCA9532n%on #4is Frantz OC Sample Group 112-390739123914 Re rted Jan 6, 1992 <br /> �a�waM��;�"�`�"..; :•°.«"�r... va: �v' .cr"�:,z;EwG`�,3';.a,�..,....,..,..............:a......,:>.v„«.�,...�.......,...ia_, .�v� 2�' r',.N:�,. <br /> i d ' <br /> QUALITY CONTROL DATA REPORT <br /> 1.� <br /> ANAt.YTE <br /> Ethyl-Toluene ben:ene Xytenes <br /> Method: EPA 8020 EPA 8020 EPA 9020 EPA 6020 <br /> j Analyst: A mrattab A Mitatlab A Miraftab A Miraffab <br /> r:y Reporting Units: -g/kg mg/kg mg/kg mg/kg <br /> Date Analyzed: Doc 31, 1991 Dec 31, 1991 Dec 31. 1991 Dec 31, 1991 <br /> to CC Sample : GELK123191 GELK123191 GBLK123191 GBLK123191 <br /> MS/MSD _ MS/MSD MS/MSD MS/MSD <br /> Sample Conc.: 0.0060 N.D- N.D. N.D. <br /> Spike Cone. <br /> Added: 0.20 0.20 0.20 0.60 <br /> Conc.Metrix <br /> Spike: 0.20 0.20 0.20 0.61 <br /> Matrix Spike <br /> ) %Recovery: 100 100 100 102 <br /> +sr <br /> fl, Conc.Matrix <br /> Spike Dup.: 0.22 0.22 0.22 0.67 <br /> Matrix Spike <br /> Duplicate <br /> %Recovery: 110 110 110 117 <br /> Relative <br /> %Difference: 9.5 9.5 9.5 9.4 <br /> t �SEC)UOIA ANALYTICAL x 1lecove <br /> ry. Conc.of M.S.,Conc.o!Sample x 100 <br /> Spike Conc.Added <br /> / Relative%Difference: Conc.af.M.S.-Cone.of M.S.D. Y 100 <br /> (1a ee {Cane.aT M.S. a Conc.at M.S.D.)/2 <br /> P OjeCt Manager IM903MMAT c8a <br />