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SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City,CA 94063 <br /> (415)364.9600 FAX(415)364-9233 <br /> +:Ciient Pro(ect ID: Ik90054 < <br /> U.S.Technical Environmental <br /> 1414 N.Broadway Rd. #. <br /> Tempe,AZ 85282 Reported Dec 3 199Wa <br /> Attention Roveiand Heil QC Sample Group, N„ x <br /> - xir s f X1. <br /> m <br /> Vis.x,,h W.»tsf,.„ m,a=;..,.,,. > .,>.,: r, q { <br /> QUALITY CONTROL DATA REPORT <br /> i . <br /> I <br /> ANALYTE Ethyl <br /> l3enzene Toluene Benzene Xylenes <br /> f <br /> Method: EPA G= EPA8020 EPA 8020 EPA 8020 <br /> E Analyst: J.D./G.M. J.D./G.M. J.D./G.M. J.D./G.M. <br /> ng/kg ng/kg ng/kg <br /> Reporting Units: nfl/�a Nov 9, 1990 Nov 9, 1990 Nov 9, 1990 <br /> Date Analyzed: Nov 9, 1990 <br /> QC Sample#: G010323& G0103238 G0103238 G0103238 <br /> 4; Sample Conc.: <br /> N.D. N.D. N.D. N.D. <br /> Spike Conc. 100 100 300 <br /> Added: 104 <br /> Conc.Matrix 100 100 300 <br /> Spike: 110 <br /> ? Matrix Spike 100 100 1fla <br /> ` %Recovery: 110 <br /> E' Conc.Matrix <br /> I ; <br /> Spike Dup.: 110 100 100 300 <br /> +t+ Matrix Spike <br /> Duplicate 110 100 100 100 <br /> s %Recovery: <br /> , .i <br /> Ye <br /> Relative 00 0.0 0.0 <br /> %Difference: 0.0 <br /> j <br /> ._.SEQIIaiA ANALYTICAL-_____ %Recovery Conc.at M.S. Conc.of Sample x 100 <br /> -----._._ __._.__ _...._._. .._..-Spike <br /> Relative%Difference: <br /> Conc.of M.S.-Cane.of M.S.D. x 100 <br /> �alle A.McBirney tCano.of M.S.+Cane,of M.S.D.1/2 lloosa fJs7 <ta� <br /> Project Manager <br /> i <br />