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- - a n <br /> T _ <br /> i <br /> SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City,CA 94063 <br /> (415)364-9600 • FAX(415)364.9233 <br /> �f W <br /> VJatstwgrk Client Prglect ID:Knowles <br /> "1710 Main Street <br /> Pscalan,CA 95320 <br /> � k <br /> Attentlan Ausseil Juncai QC Sample Group 0083825-3828 ReportedAvg 28 1890 <br /> m ,� <br /> z <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTS Ethyl Xylenas <br /> Benzarra Toluene Benzene <br /> Method: EPA 8020/8015 EPA 8020/6015 PA 8020/8015 EPA 6020/8015 <br /> Analyst: G.Meyet G.Meyer G.Meyer G.Mayer <br /> Reporting Units: mg/kg mg/kg mg/kg mg/kg <br /> e Date Analyzed: h:j 23, 1990 Aug 23, 1990 Aug 23, 1990 Aug 23, 1930 <br /> DC Sample#: ow uv ooe,3e87 0081WI OO8-W7 <br /> Sample Cone.: N.D. N.D. N.D. 0.0058 <br /> Spike Cone. <br /> Added: 0.20 0.20 0.20 0.60 <br /> c <br /> Conc.Matrix <br /> Spike: 0.16 0.18 0.19 0.62 <br /> y 1 <br /> {� Matrix Spike <br /> X45 %Recovery: 80 90 95 100 <br /> n Conc.Matrix <br /> K- <br /> Spike Dup.: 0.16 0.18 0.18 0.60 <br /> Matrbt Spike <br /> Duplicate I <br /> %Recovery: 80 90 90 100 <br /> T <br /> Relative <br /> Difference: 0 0 5.4 3-3: <br /> FS UOIA ANAL L %Hecovery:. Cana,of M.S.-Cone.of Samplo x 100 <br /> Spike Conc.Added <br /> Relative%Difference: Cone.of M.S.-Conc,of M.S.D. x 100 <br /> .: Itzabath W.Had JC-ono.of M.S.+Canc.of M.S.D.)/2 i <br /> Project Manager 8.3825.WAT <2> <br /> i t <br />