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r <br /> SEQUOIA ANALYTICAL <br /> F8o Chesapeake Drive • Redwood City, CA 9406 <br /> (415) 364-9600 FAX (415) 364.9233 <br /> V►%ateiwork Client Project ID Ain es y r y �. <br /> 1710 Main Street >' <br /> Escalon, CA 95320 Reported Aug 28 1990 <br /> Attention: Russell Juncai QC Sample Group 0083825826 <br /> QUALITY CONTROL DATA REPORT <br /> ANAL Estlyl Xyi9nex <br /> Benzene Toluene 8enaone <br /> Method: EPA 8020/85015 EPA 8020/8015 PA 8020/8115 EPA 8020/8015 <br /> Analyst: G Meyer G.Meyer G.Meyer G.Meyer <br /> Reporting Units mg/kg mg/kg mg/kg mg/kg <br /> Date Analyzed: Aug 23. 1990 Aug 23. 1990 Aug 23. 1990 Aug 23, 19W <br /> CC Sample #: 009-3w 008.1W7 006.3487 008-3487 <br /> Sample Cone.: N.D- N.D. N-D. 0.0058 <br /> Spike Conc. 0.60 <br /> Added: 0.20 0.20 0.20 <br /> Conc.Matrix <br /> Spike: 0.16 0.18 0.19 0.62 <br /> Matrix Spike 100 <br /> %Recovery: 80 90 95 <br /> Conc. Matrix 060 <br /> Spike Dup.: 0.16 0.18 0.18 <br /> Matrix Spike <br /> Duplicate 90 90 100 <br /> %Recovery: 80 <br /> Relative 3 3 <br /> %Difference: 0 0 5.4 <br /> AU0 A ANAL L r %Fleeovery: � Conc.of M.S. Conc.of Semple x 100 <br /> / Spike Conc.Added <br /> "�— <br /> Relative%Difference: Conn. of M.S.-Conc.of M.S.D. 1100 <br /> J <br /> lizabeth W. Hac (Cone.of M. Cone.Conc.of M.S.D.► 2 <br /> Project Manager <br /> d O--, AdOrl.�31dil 9t,:9T 06, TE `?1 1h1 <br />