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j SEQUOIA ANALYTICAL, <br /> 680 Chesapeake Drive - Redwood City, CA 94063 <br /> 41 4- i <br /> 5 36 9600 FAX 415 364-9233 <br /> I ( ) ( f <br /> RESNA Client Project ID: W4801, PG&E Stockton <br /> 1710 Main Street <br /> Escalon, CA 95320 <br /> "Attention: Lois Frantz OC Sample Group: 3A46301 ' Reported: Feb 5, 1993 <br /> i <br /> :...:....:........::.:...:..:......:....:............. .........._..................... :..................:.................- -.................^- -- .:..:.,..........._..... <br /> I I <br /> QUALITY CONTROL DATA REPORT <br /> I <br /> ANALYTE <br /> Oil&Crease I <br /> ) <br /> Method: SM 5520 EF <br /> Analyst: M.Shkidt <br /> Reporting Units: mg/kg <br /> Date Analyzed: Feb 2, 1ss3 <br /> OC Sample #: BLK020293 <br /> Sample Conc.: N.D. <br /> Spike Conc. <br /> Added: 1000 <br /> Conc. Matrix <br /> Spike: 760 <br /> { Matrix Spike <br /> %Recovery: 76 <br /> Conc. Matrix <br /> j Spike Dup.: 720 <br /> I <br /> Matrix Spike f <br /> Duplicate <br /> % Recovery: 72 I <br /> i <br /> Relative <br /> %Difference: 5.4 <br /> f <br /> w <br /> SEQUOIA ANALYTICAL %Recovery: Conc.of M.S.;-Conc.of Sample x 100 <br /> 1 Spike Conc.Added <br /> 1 <br /> �G Relative%Difference: Conc.of M.S.-Cone.of M.S.D. x 100 <br /> 1 Project <br /> a (Conc.of M.S. + Conc.of M.S.D.)/2 <br /> 1 Manager 3A46301.RES <10> <br /> 1 <br /> I <br />