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jr � r <br /> ram <br /> i <br /> SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City,CA 94063 <br /> (415)364.9600 FAX(415)364-9233 <br /> _ \ :N, <br /> U.S.Technical Environmental Clfent Project ID: # 54 Stockton <br /> /CCE-West, t <br /> 1414 N.Broadway Rd. ` <br /> s <br /> Tempe AZ 85282 <br /> Hall 00 Sample Group: 0110934.65 Reported Dec 3 1990 <br /> 1 Atter:rlon RdwlarldH �dro3 J' £•c2�-- <br /> QUALITY CONTROL DATA REPORT <br /> I <br /> i ANALYTE Ethyl <br /> Benzene Toluene Benzene Xylenes Diesel <br /> j Method: EPA 8020 EPA 8820 EPA 8020 EPA 8020 EPA 8015 <br /> Analyst: J.Fontecha J.Fontecha J.Fontecha J.Fontecha J.Malerstein <br /> Reporting Units: mg/kg mg/kg mg/kg mg/kg mg/kg <br /> Date Analyzed: Nov 15, 1994 Nov 15, 1990 Nov 15, 1990 Nov 15, 19W Nov 16, 1990 <br /> 00 Sample#: 010.0445 010.0445 010.0445 010-0445 Matrix <br /> i . <br /> Sample Cone.: N.D. N.D. N.D. N.D. N.D. <br /> Spike Cone. <br /> Added: 0.40 0.40 0.40 1.2 300 <br /> Cone.Matrix <br /> T. Spike: 0.36 0.36 0.35 1.1 300 <br /> Matrix Spike <br /> %Recovery: 90 90 88 92 100 <br /> Cone.Matrix <br /> i <br /> Spike Dup.- 0.36 0,38 0.38 1.1 310 <br /> Matrix Spike <br /> Duplicate <br /> %Recovery: 95 95 95 92 100 <br /> Relative <br /> %Difference: 5.4 5,4 8.2 0.0 3.3 <br /> ­100 <br /> x.tieccwery _...._._.._....__.__.._._..._.Cone:of M.S.-Canc.of Sample—_—.... ------ - - — - ------- ---- -- <br /> e._ Spike Cono.Added <br /> Relative%5ff;ren . Cono.of M.S.-Con..of M.S.D. x 100 <br /> Maile A MC iConc,of M.S._+Conc.of M.S.D.) 2 <br /> Project Manager ttosa4.usr <14� <br />