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SEQUOIA ANALY ICA1 <br /> 680 Chesapeake Drive Redwood City. CA 94063 <br /> (415) 364-9600 FAX 1415) 364-9233 <br /> Waterwork <br /> 1710 Main Street Client Project ID. #20147 1, Stephen's Anc'hor'age <br /> Escalon, CA 95320 <br /> Attention C Battrarn QC <br /> ...:> Sa..m;.:.p..le <br /> Group: 9082646 <br /> .. <br /> Reported: <br /> Sep 12, 1989 <br /> wra <br /> f <br /> QUALITY CONTROL DATA REPORT <br /> ism <br /> ANALYTE Diesel Toluene Ethyl xylenes <br /> wta .. <br /> Benzene <br /> EPA 8020 EPA 8020 <br /> Method: EPA 8015 EPA 8020 <br /> t <br /> Analyst: E. Hamilton M. McBimey . McSimey .-McB€rney <br /> ki Reporting Units: mg/L erg/L N9/1- Pg/L ` <br /> Date Analyzed: Sep 7, 1989 Aug 29, 1989 Aug 29. 1989 Aug 29. 1989 � <br /> CC Sample#: Matrix 9083508 9083508 9083508 <br /> 4 Sample Cone.: N.D. N.D. <br /> N.D. N.D. j. <br /> j . <br /> Spike Cone. <br /> Added: 317 2.5 2.5 7.5 <br /> r <br /> Cone. Matrix <br /> F Spike: 320 2.36 2.52 7.54 <br /> 0 <br /> Matrix Spike <br /> %Recovery: 101 94 101 101 <br /> Cane. Matrix <br /> Spike Dup.: 275 2.73 2.63 7.6 <br /> Matrix Spike <br /> Duplicate <br /> R6 Recovery: 86 109 105 101 <br /> f <br /> { <br /> Relative <br /> %Difference: 15 15 4.3 0.79 <br /> 'SEQUOIA ANALYTIC�l, Recovery; Conc.of M.S,-Cone.of Sampte x top <br /> Spike Cont.Andes <br /> Relative%Difference: Cone.of M.S..Conc.of M.S.D. x t00 <br /> Arthur G. Burton {Cone.of M.S. C ona.of M.S.D.Y 2 <br /> VJW -Laboratory Director <br /> 90826544 .wAT .3> <br />