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1900 Sates Avenue Suite LM Concord, California 94520 f <br /> Nip (510) 686-9600 1 (510) 686-9689f <br /> .....:... _r......-.- <br /> ETS i=nvlronmemtaf Associates .......Giem Project <br /> i'P.O. Sox 2242 <br /> Merced, CA 95344 <br /> :::Attention. Dan AndersonC m <br /> Q Sample Group: 205 2 <br /> - <br /> 0 53 2 <br /> Reported: May <br /> S, 1992 '4 <br /> >v <br /> I <br /> E <br /> QUALITY CONTROL DATA REPORT <br /> i <br /> i <br /> ANALYTE <br /> Ethyl- <br /> Benzene Toluene Benzene Xylenes Diesel Lead <br /> k EPA EPA EPA EPA <br /> Method: 8015/8020 8015/8020 8015/8020 8015/8020 EPAS015 EPA 7421 <br /> r Analyst: A.T. A.T. A.T. A.T. K.Wimer K.Anderson <br />[ Reporting Units: m9/K9 mg/Kg mg/K9 mg/K9 mg/Kg mg/Kg <br /> Date Analyzed: May 15, 1992 May 15, 1992 May 15, 1992 May 15,° 1992 May 19, 1992 May 14, 1992 <br /> QC Sample #: Matrix Blank Matrix Blank Matrix Blank Matrix'Blank Matrix Blank 203-0023 <br /> Sample Conc: N.D. N.D. N.D. N.D. N.D. 6.0 <br /> I 1 <br /> Spike Conc. <br /> Added: 0.40 0.40 0.40 1.2 10 50 <br /> Conc. Matrix <br /> Spike: 0.37 0.37 0.42 1.2 8.0 54 <br /> Matrix Spike <br /> %Recovery: 93 93 .105 100 80 96 <br /> I Conc. Matrix <br /> Spike Dup.: 0.37 0.37 0.42 .1.2 8.1 52 <br /> 3 - Matrix Spike <br /> 1. Duplicate <br /> % Recovery: 93 93 105 100 80 92 <br /> r' <br /> I Relative <br /> % Difference: 0.0 0.0 0.0 0.0 0.0 3.8 <br /> l <br /> SEQUOIA ANALYTICAL %Recovery: Conc.of M.S.-i Conc.of Sample x 100 <br /> Spike Conc.Added <br /> / Relative%Difference; Conc.of M.S. Canc.of M.S.Q. x 100 <br /> Karen L Enstrom - -- (Conc.of M.S. + Canc.of M.S.D.)/2 <br /> Project Manager <br /> i <br /> it �� <br />