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Y <br /> SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive . Redwood City CA 94063 <br /> (415)364-9600 o FAX(415).'.x4-9233 <br /> }$pL. ,[ v 1--- <br /> Water��tsrit gient Project ID:W0398,Reeves Exxon <br /> X710 MainStreet H <br /> <<Escalon,CA 95320 <br /> '*,'Attention: LoisR Frantz OC Sample Group: 1123916 <br /> Rewsed# Jan 28. 1992 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE <br /> Lead Chromium Cadmium 7,nc <br /> H <br /> Method: EPA 7421 EPA 6010 <br /> EPA 6010 EFA601Q <br /> Analyst: M.Wstry C.Medefesser <br /> Reporting Units: a;8/kg m C.Medefesser C.Medefesser <br /> g mg/kg <br /> nate Analyzed: Dec ao, 1991 Dec 31-9/kg <br /> Dec 3111991 Dec 31, 11997 <br /> QC Sample#: 112.3976 112-3615 1123615 112-3615 <br /> Sample Cone.: 8.4 l 0.79 N.D. 51 <br /> Spike Cone. <br /> Added: SO 100 100 100 <br /> Cone.Matrix <br /> Spike: 59 110 100 150 <br /> Matrix Spike <br /> %Recovery: 100 109 100 . 99 <br /> Cone.Matrix <br /> ` Spike Dup.: 59 110 110 160 <br /> Matrix Spike <br /> Duplicate <br /> %Recovery: 100 109 110 t09 <br /> Relative <br /> 6.5 - -—--- --- —----------- . <br /> -- SEQUOIA ANALYTICAL Recovery: Conc.el M.S.-Canc.of Sample a 100 <br /> Spike Cone.Added <br /> d��/nV.I�a Relative Difference: Cone,of M.S.•Cone.of M.S.O. a 100 <br /> PPoject 86 (Cone.of M.S. +Cone.of M.S.O.} 2 <br /> Manager <br /> - 1123903.wAT -cloy <br />