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UI AL � � <br /> 580 Chesapeake Drive - Redwood City,CA 94063 <br /> (415)364-9600 FAX(415)364-9233 <br /> munu <br /> k,Waterwork CiEent Project ID.395 Eckholm <br /> 1710 Main Street <br /> 'Escalon,CA 95320 Reported:May 17 1991 <br /> 043735-3740 w � a 4 off <br /> .Attentlon Lois Frantz <br /> QC Sample GroupRIe M1 r <br /> �,.,.. <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE <br /> Load <br /> Method: EPA7421 <br /> Analyst: V.Patel <br /> Reporting Units: m8/kg <br /> Date Analyzed: May 16. 1991 <br /> QC Sample#: 1051346 <br /> Sample Cone.: 5.0 <br /> E <br /> Spike Cone. <br /> Addzd: 50 <br /> Conc.Matrix <br /> Spike: 5o <br /> Matrix Spike <br /> %Recovery: 90 <br /> Conc.Matrix <br /> Spike Dup.: 52 <br /> Matrix Spike <br /> Duplicate <br /> %Recovery: 94 <br /> Relative <br /> %Difference: 3.9 <br /> %Pacove Conc.of M.S..Cana.of Sample x 100 <br /> SEQUOIA ANALYTICAL ry" Spike Cone.Added <br /> �- Poli tive%Difference- {:ono.of M.S.•Cana.of M.S.D. X 100 <br /> as eI aC I ECanl of M.S.+Conc.of M.S.C.}/2 A1E1737 S.WA1 <2a <br /> Project Manager <br />