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SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City,CA 94063 <br /> (415)364-9600 • FAX(415) 364-9233 <br /> 'au"4- xtian`fi��E ''�n•,.ws.'C'l`YF&'f.wrorwCea^:«c�o`A+'eiaaPr»� r'�':RMEE � 01=3 +- Zri1.` vlzm?`fiu`Tu3� <br /> „z <br /> RESNA Client Project ID W4801,PG&E Stockton Service Center v <br /> r 1710 Main Street r <br /> 'F Escalon, CA 95320 x <br /> 4Attention Lois Frantz QC Sample Group 3867101 Reported Mar 2, 1993 <br /> 3v :`ba L Ywcamo atr r \L rt PS? 2ni ° ax mroc dGgS rohwRaAS bsfiesocxomro ac ro '2 o P a a caa <br /> 4}�.�u..2n.�,o •�,�'C¢:���ow ajfF.u�'Fs.<valY s <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE ExlractW* PC812W <br /> Hydmaubons <br /> Method EPA 8015 PCs <br /> Analyst C Lee L Haw <br /> Reporting Units mg/kg pg/L <br /> Date Analyzed Feb 24, 1993 Feb 18, 1993 <br /> OC Sample# 3888902 3950805 <br /> Sample Conc.: 120 N D <br /> Spike Conc. <br /> Added: 150 500 <br /> Conc. Matrix <br /> Spike: 96 640 <br /> Matrix Spike <br /> %Recovery: 128 <br /> Conc. Matrix <br /> Spike Dup.: 100 620 <br /> Matrix Spike <br /> Duplicate <br /> %Recovery: 124 <br /> Relative <br /> %Difference: 41 32 <br /> * Note Low matrix spike&duplicate recoveries due to matrix effect <br /> 0SE01.1011AANALYTICAL Pies"Note Conc of M S -Cone of Sample X100 <br /> Spike Conc Added <br /> PelatIve%Werenoe Conc of M S -Conc of M S.D X100 <br /> Lee (Conc of MS + Cone of MSD)/2 <br /> roject Manager 3867101 WAT <3> <br />