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R6 <br /> �Ml <br /> SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive - Redwood City.CA 94063 <br /> (415)164-9600 FAX(4151364-9233 <br /> b ta Environmental Consultants CAlent Project ID-:4o-s& w <br /> s .oi Charter Way Shall,Stockton <br /> 6l' <br /> :.13330 Data Drive <br /> Rancho Cordova,CA 95670 <br /> Attention: Hugh Miles OC Sample Group:1073938-39 Reported: Jul 30, 1991 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene benzene ?Yenes <br /> Method. EPA 8= EPA 8020 EPA 8020 EPA 8020 <br /> Ana:yst: L Laikhtman L LWkhlman L Latkhtman L Lalkhtman <br /> Reporting Units: ng no no no <br /> Date Analyzed: Jul 26, 1991 Jul 26, 1991 Jul 26, 1991 Jul 26, 1991 <br /> OC Sample#. GBLKo72691 GBLK072691 GBLK072691 GBLK072691 <br /> MS/MSD MS/MSD MS/MSD MS/MSD <br /> Sample Conc.: N.D. N.D. N.D. N.D. <br /> Spike Conc. <br /> Added: 100 100 100 300 <br /> Conc.Matrix <br /> Spike: 100 100 100 300 <br /> Matrix Spike <br /> %Recovery: 100 100 100 100 <br /> Conc.Matrix <br /> Spike Dup.: 98 97 96 300 <br /> Matrix Spike <br /> Duplicate 97 96 100 <br /> %Recovery: 98 <br /> Relative. <br /> %Difference: 2.0 3.0 4.1 0.0 <br /> JEC)UOIA ANALYTICAL %Recovery; Conc,of -Conc.of Sample X 100 <br /> Spike Conc,Added <br /> Relative%Difference: <br /> Conc.of M.S.-Conc.of MLS'o' X 100 <br /> Malle McBlmey ring (Conc.of WS.+Conc.of M.S.U) 2 l <br /> Project Manager 073934.D4r 45> <br />