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SEQUOIA ANALYTICAL <br /> �. 680 Chesapeake Drive • Redwood City,CA 94063 <br /> (415) 364-9600 FAX (415) 364-9233 <br /> �: ...w. <br /> ...,:::... <br /> RESNA Escalon :. . ,. ::.. ...�: .. ;. :.: <br /> Giertt Project 10:W0602.1C, Banner Island <br /> ...'1710 Main Street <br /> Escalon, CA 95320 <br /> Attention: B11 Channell QC Sample G <br /> - Reported: Aug 21, 1992 <br /> Group: 813 -78 <br /> 20 70 <br /> •..w»:a:chi;>x:;.:+c�a:.w:ww::»>w..daM.::a:.:...... .,,wwDbc::..�:'L::::i.:«Giiw:�'..:c::::ii.::::6:6 :,.w..::c <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE , Arsenic Selenium Antimony Tb.Dissolved <br /> Solids <br /> Method: EPA 2062 EPA 270.2 EPA 204.2 EPA 160.1 <br /> Analyst: FLSharma FLSharrna KNewbemy YA-saga <br /> Reporting Units: mg/L mg/L mg/L mg/L <br /> Date Analyzed: Aug 20, 1992 Aug 20, 1992 Aug 20, 1992 Aug 12, 1992 <br /> QC Sample*: 208-1600 20&1600 208-1375 208-1378 <br /> Sample Conc.: N.D. N.D. N.D. 345 <br /> t Spike Conc. <br /> Added: 0.040 0.040 0.10 255 <br /> Conc. Matrix <br /> Spike: 0.041 0.042 0.10 570 <br /> Matrix Spike <br /> % Recovery: 103 105 100 88 <br /> Conc. Matrix <br /> Spike Dup.: 0.037 0.050 0.088 590 <br /> Matrix Spike <br /> Duplicate <br /> % Recovery: 93 125 88 96 <br /> Relative <br /> % Difference: 10 17 13 3.4 <br /> SEQUOIA ANALYTICAL %Recoveryn Conc.of M.S.-Cone.of Simple x 100 <br /> / Spike Cone.Added <br /> Relative%Difference: Cone.of M.S.-Cone.of M.S.D. x 100 <br /> a Lee (Cont.of M.S. + . . <br /> Conc.of MO.)—/2 <br /> oject M <br /> anagerr <br /> 2081370.WAT <17> <br />