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i:., <br /> i <br /> E UOIA AI ALM AL <br /> 680 Chesapeake Drive • Redwood City,CA 94063 <br /> (415)364.9600 FAX(415)364.9233 <br /> -.gin.:: ,1..i:. ... <br /> E�cdtech CiEent Project ID: #349120,3 ,Qu k Stop#120,Stockton <br /> 41674 Christy Street PO#20222 <br /> Oremont,CA 94538 <br /> Attention John Monroe QC Sample Group 0081084 5 <br /> Repotted:Aug 17, i 990 <br /> .:,. <br /> QUALITY CONTROL DATA REPORT <br /> Lead �. --- <br /> Method: EFA 7421 <br /> Analyst: R Sharma <br /> Reporting Units: mg/L <br /> Date Analyzed: Aug s, im <br /> OC Sample#: 00130270 <br /> _ Sample Cone.: M.D. <br /> 3 <br /> Spike Cone. <br /> Added: 0.10 <br /> Conc.Matrix <br /> Splice: 0.084 <br /> Matrix Spike <br /> %Recovery: 84 <br /> Conc.Matatx <br /> Spike Dup.: 0.092 <br /> Matrix Spike <br /> Duplicate <br /> s <br /> %Recovery: 92 <br /> Relative <br /> x Difference: 9.1 <br /> w <br /> SEQUOIA ANALYTICAL %faeoovery Conc.of M.S.- no.of pie x 100 <br /> Spike CoFro.Added <br /> FMiaBYe%Werencec Conc.of M.S.-Conc.of rdAM x 100 <br /> Vickie 8gU ( rx.of M.S.+ ra,of M.S.D.) Z <br /> Pto Marta or <br /> 81064.ENS <g> <br />