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_ <br /> a OX <br /> r <br /> r LIM,MR— <br /> SE1`-_ ANALYTICAL . ,EIVED MAY 3 � <br /> 650 Chesapeake Driw, - Redwood City.CA 94063 <br /> (415)364-2600 FAX(4151364-9233 <br /> ... .a.msm:..aa=.--.� <br /> ' ,VVaterwork Clieni <br /> ,710 Main Street <br /> 4Escalon,CA 95320 <br /> `Attentlon: BiliChannell QC Sample Group 1042985-2995 Re ned:Ma - <br /> z �...hti.ay 1, 1991 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl <br /> Benzene Toluene Benzene X ienea <br /> Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst: G.Maytr Ca.Mayer G.M"r G.Mayer <br /> Reporting Units: rig ng rip ng <br /> n <br /> Date Analyzed: Apr 23, 199, Apr 23, leer AFS 23, test Apr n 1991 <br /> QC Sample: u^SLK 042391 GBLK042391 GBLK042MI G8LK04M91 <br /> Sample Conc.: N.D. N.D. N.D. N.D. <br /> Spike Cone. <br /> Added: 100 100 100 300 <br /> Conc.Matrix <br /> Spike: 87 91 91 270 <br /> Matrix Spike <br /> %Recovery: 87 91 91 <br /> 90 <br /> Cone.Matrix <br /> Spike Dup.: 85 95 95 290 <br /> Matrix Spike <br /> Duplicate <br /> %Recovery: 85 95 95 97 <br /> Relative <br /> %Difference: 2.3 4.3 4.3 7.1 <br /> SE 0IA ANALYTICAL %Recovery: Oona.of M.S.-Conc.of Sample 100 <br /> � � --Sptka Cone.Added <br /> Relative%Difference' <br /> i2at7elh W. aC M.S.oria.of M.S.-Conc.or M.S.D. x 100 <br /> {Cone.of +Conc.of M.S.D.I/Z <br /> roject Manager <br /> IOe29M.wAT c4a <br />