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SEQU®I/ ANALYTICAL 1_ <br /> 1900 Bates Avenue e I-M - Concord, California 94520 j <br /> (510) 686-9600 FAX (510) 686-'9689 <br /> 22 STcti <br /> W.W. liwin Client Project ID: 033033014.00/Ernbarcatlero, foror <br /> P.O Box 2242 <br /> Merced, 95344 � <br /> I <br /> .Attention Roy Austin OC Sample Group: 2060650-655 Reported: Jul 1, 1992 <br /> MM <br /> ;ra ,k7 • <br /> { <br /> QUALITY CONTROL DATA REPORT <br /> 6 <br /> ANALYTE Trichloro Chloro- <br /> 1,1.Dichloroethene ethene benzene <br /> Method: EPA 8010 EPA 8010 EPA 8010 <br /> Analyst: M.Nguyen IA Nguyen M.Nguyen <br /> r Reporting Units: pg/kg v9/kg " vg/kg - <br /> Date Analyzed: Jun 19, 1992 Jun 19, 1992 Jun 19, 1992 <br /> i OC Sample #: Matrix Blank Matrix Blank Matrix Blank <br /> s <br /> Sample Cone.: N.D. N.D. N.D. <br /> I <br /> Spike Cone. <br /> j Added: 10 10 10 <br /> j Cone. Matrix <br /> Spike: 8.4 10 9.4 <br /> Matrix Spike <br /> % Recovery: 84 100 94 <br />'_- Conc. Matrix <br /> Spike Dup.: 8.9 10 d 9.4 <br /> 1 . <br /> Matrix Spike <br /> Duplicate <br /> %Recovery: 89 100 94 <br /> Relative <br /> %Difference: 5.8 0.0 0.0 <br /> cuality Assurance Statement:All standard opera5ng procedures and quality control requirements have been met. <br /> SEQUOIA ANALYTICAL %Re very: ` Conc.of M.S.-Conc.of Sample x 100 <br /> Spike Conc.Added <br /> i <br /> (1,° Reiafrre%Difference: Conc.of M.S.-Conc.of M.S.D. x 100 <br /> 'Karen L-Enstrom (Conc.of M.S. + Conc.of M.S.D.)/2 > <br /> Project Manager <br /> i <br />