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+g.��.rq � $- i{�'-. �h: .a�'„�y '"' ,�- t.�, r z` �.'i" 'F <8...� _�<' � t.L,.9�ia. .mac �.H.� .- .. �,,,a F,—`��• « <br /> 'sr <br /> ate"" <br /> a <br /> F <br /> IN <br /> 0 OR W-_ <br /> SEQUOIA ANALYTICAL <br /> 6104 680 Chesapeake Drive Redwood City,CA 94063 <br /> (415)364-9600 - FAX(415)364.9233 <br /> "EWronmental Consultants aient Traject ID.40-88-586,Charier Way,Shel±,Stockton "A <br /> 3330 Data Drive <br /> Rancho Coro'"ova,CA 95670 <br /> Attention Hal Dlhm QC Sample Group 1044560 1444566 Reported: May 2, 1991 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Benzene Toluene Ethyl Xyienes <br /> Benzene <br /> EPA EPA EPA EPA <br /> Method: 8015;9020 sots/8020 8015/8020 SD1s/8020 <br /> Analyst: S.Chieffo S.Chleffo S.Chfeffo S.C,•-*Sffo <br /> Reporting Units: ng ng no ng <br /> Date Analyzed: Apr 30, 1991 l.pr 30. 1491 Apr 30, 1991 Apr 30, 1991 <br /> QC Sample#: BLK043o9i BLK043091 BL1t043091 BL.KG43091 <br /> Sample Cenc.: N.D. N.D. N.q.). N.D. <br /> Spike Cone. <br /> Added: 140 100 100 300 <br /> Conc.Matrix <br /> Spike: 94 94 94 280 <br /> Matrix Spike <br /> %Recovery: 94 94 94 93 <br /> Cone.Matrix <br /> Spike Dup.: 95 95 93 280 <br /> Matrix Spike <br /> Duplicate <br /> %Recovery: 95 95 93 93 <br /> Relative <br /> %Difference: 1.1 1.1 1.1 0.0 <br /> -� 'EQUOIA ANALYTICAL 96 Flecovary; Conc.of M.S.-Conc.of Sample x 100 <br /> `7� 1� n Spike Conc.Added <br /> 1 eEalive%Differanw: Conc.of M.S.-Conc.of M.S.O. x too <br /> Mahe cl3lrne ptgery p g � (Canc.of M.S.+ Conc.ofM.S.D.)/3 _ <br /> Project Manager VVV 1044560.DLT c7> <br />