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t <br /> kx � w^xh ao., '�23�'w <br /> -MEM hi - +'it <br /> e a <br /> •« i:- <br /> w y <br /> i <br /> SEQUOIA. ANALYTICAL <br /> 6£0 Chesapeake Drive , Redwood City,CA 94063 <br /> (415)364-9600 • FAX(4::S)364-9233 <br /> 'Delta Environmental Consultantsw Client <br /> Project ID:#40-88-58!>%ChailerilVay Shell,Stockton <br /> 13330 Data Drive <br /> `Rancho Cordova,CA 9`S70 <br /> Attention: Hal Dihm CC Sample Group 108.0295 Reported:Aug 9, 1991 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE ^ <br /> Fsenzene Taluor�a Ethylbrmene X ene <br /> Method: EPA 8020 EPA 9020 EPA 8020 EPAW20 <br /> Analyst: D.Dreblow 0.Dreblow D.Dreblow D.Dreblow <br /> Reporting Unles: ng ng ng ng <br /> Bate Analyzed: Aug 7. 1991 Aug 7. 1991 Aug 7. 1991 Arg 7. 1991 <br /> OC Sample 9P: OBLK080781 GOLK080791 GBLK083791 G13LKQB0791 <br /> Sample Gone.; N.D. N.D. N.D. N D <br /> j. <br /> Spike Cone. <br /> Added: 10 10 10 3U E <br /> Cone.Matrix <br /> Spike: 9.8 9.8 9.7 29 <br /> Matrix Spike <br /> %Recovery: 98 98 97 97 �. <br /> Conc.Matrix <br /> Spike Bup.: 9.7 9.7 9.0 29 <br /> E <br /> Matrix Spike <br /> Duplicate <br /> %Recovery: 97 97 96 97 <br /> E <br /> Relative <br /> %Difference; 1.0 ?.0 1.0 0 <br /> SEQUOIA ANALYTICAL %Rer covery: Cano.SRi a cone Adde�mple x 100 <br /> - ��fl L----_ Relstive%o:freience: Gone.of M.S.•Conc,•a[M.S.D. x 100 <br /> Malle McBlmey Sprinner jConc.or M.S.+R,anc,of r�1.5.D. z <br /> Project Manager 10�32`e5.t)LT <4> <br /> 1 <br />