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® <br /> SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive Fedv,00d amity,CA 94063 <br /> (415)364-9600 FAX(415)364.9233 <br /> fl'Waterwork Client Project ID: Eckhczm <br /> 1710 Main Street <br /> ;Escaion C/, 953213 <br /> fA°i�rtion: Blli Channell QC Sample Group 1 04373 1-3741 Reported Mai+ 6. 1991 <br /> Y�?^��..f`iw...;.-,: ..-.. �.��--'-r'ar,..�.,ra�xzr.-%mr'Y:p;Gv-/.,r:;zt''�z-�.s�':h'=^,{,a'_--�r:::mx�r�-Y/•=fir,�;;;.w.r'C:r,.. - r^X^c:s:�^*.':G^'.fgrCT'a.,�.'2 ".�." <br /> Wiz±: <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ed's <br /> Benzene Toluena Benzene Xylanas <br /> Method: FPA 8020 EPA8020 EPA 8= EPA 8020 <br /> Analyst• G.A&ytr G h"T G.player G.N%ycr <br /> Reporting Units: ng ng ng ng <br /> Date Analyzed: Apr 25, 1991 Apr 25, 199, Apr 25, 1991 Apr 25, 1991 <br /> QC Sample#: GBLK 042591 GBIK 042591 GBLK 042591 GBLK 042591 <br /> Sample Cone.: N.D. N.D. N.D. N.D. <br /> Space Cone. <br /> Added: 100 100 T00 300 <br /> Cone.Matrix <br /> Spike: 92 94 94 2130 <br /> Matrix Spike <br /> %Recovery: 92 94 94 93 <br /> Conc.Matrix <br /> Spike Dup.: 93 100 100 300 <br /> Matrix,.'-,Ike <br /> Duplicte <br /> %Recovery: 93 100 100 100 <br /> Relative <br /> %Difference: 1.1 6.2 6.2 5.9 <br /> SEC�'l101A ANALY rCAL %R<x'"Fry: Conc.erf M.S.-Ccnc.a1 Sample x 100 <br /> Spike Conc.Added <br /> FielsNve X(JiHerence: Cam.of M.S. Conc.of M.5.0. x 100 <br /> W.Hac (Conc.of M.S.+Conc.of f,1.S.0.) 2 <br /> / P ject Manager 1043r31.wAT <5> <br />