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SEQUOV ,NNALYTICAL <br /> l 1900 Bates Avenue cite LM • Concord. California 94520 <br /> (510) 686-9600 FAX (510) 686-9689 <br /> I <br /> :aClient Pro)ect 1D: 033029.0013, 733 S Vankiiirn" 'tockfon <br /> 335 Grogan , Suite A <br /> Merced, CA 95340 <br /> :x. <br /> Attention Roy Austin OC Sample Group: 2060656-658Reported: Jun 19, 1992 <br /> -.-:...... wow,v <br /> '3M1? <br /> k <br /> QUALITY CONTROL DATA REPORT <br /> r <br /> S <br /> ANALYTE Ethyl- I <br /> Benzene Toluene Benzene Xylenes <br /> EPA EPA EPA EPA C <br /> Method: 8015/802() 8015/8020 8015/8020 8015/9020 <br /> Analyst: J.F. J.F. J.F. J.F. <br /> Reporting Units: mg/kg mg/kg mg/kg mg/kg <br /> Date Analyzed: Jun 16, 1992 Jun 16, 1992 Jun 16, 1992 Jun 16, 1992 <br /> OC Sample #: Matrix Blank Matrix Blank Matrix Blank Matrix Blank <br /> Sample Cone.: N.D. N.D. N.D. N.D. " <br /> Spike Cone. <br /> Added: 0.40 . 0.40 0.40 1.2 <br /> Conc. Matrix <br /> Spike: 0.47 0.47 0.48 1.5 <br /> Matrix Spike <br /> % Recovery: 117 117 120 125 <br /> E-. Conc. Matrix <br /> Spike Dup.: 0.46 0.47 0.48 1.5 <br /> Matrix Spike d <br /> Duplicate <br /> % Recovery: 115 117 120 125 <br /> Relative <br /> i <br /> % Difference: 2.1 0.0 0.0 0.0 <br /> i r <br /> e <br /> SEQUOIA ANALYTICAL %Recovery: Conc.of M.S.-Conc,of Sample x too. <br /> Spike Conc.Added <br /> Relative 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 206W56.WM <3> <br /> Project Manager <br />