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4 <br /> x _ <br /> ,p. <br /> 1 <br /> �. SEQUOIA ANALYTICAL <br /> 4D 884 Chesapeeke Drive • Redwood city,CA W63 RECEIVE®MAY 3 <br /> (4�5}364-0600 FAX(415)384-9233 <br /> ,w b . <br /> rLrk Cti•ent Project ID„:`i,.evOSa3. rl3aW <br /> avao .. ''vc',"ma^l^.o.ff.a��^�:.�s°,y.r"•".u.�.>ru.-.we,w:.,,....:.x� �.•a:,n- <br /> . <br /> 11710 Main Street <br /> Esca;on,CA 95320 <br /> Attention: 8111 Channell QC:iample Group: 1042585-2995 R' ed { <br /> QUALITY CONTROL DATA REPORT <br /> k i <br /> ANALYTEZinc lead <br /> Lead Hexpvalen3 Chromium CadmEu:n Ct+rcmfum <br /> Metl.od' EPA 7421 EPA719S EPA6010 EpAs0t0 EPR6d10 EPA 7421 <br /> Analyst: Fl Eastman Y.Aslasga S.Foster S.Foster mg/kp, rnglkg <br /> Reporting Units: malt:. m4/kg mg/kg mg/kg <br /> Date Analyzed: Apr 24. YAl AP' 1019. 1991 104.4140 1 10Apr 4-4140 199 <br /> 1 104-4140 1 X104-2910 l <br /> QC Sample 104-2m <br /> 9.3 <br /> N.D. <br /> Sample Cone.; 4.2 25 54 18 <br /> Spike Cone. 250 250 250 50 <br /> Added: 50 5.0 <br /> Conc.Matrix260 260 270 63 <br /> 4 <br /> Spike: 54 " <br /> Matrix Spike 95 100 94 86 94 <br /> %Recovery: 89 <br /> Conc.Matrix4.3 220 250 250 53 <br /> Spike Dup.: 53 <br /> Matrix Spike <br /> Duplicate 86 86 94 78 84 <br /> %Recovery: 87 <br /> Relative11 17 3.9 7.7 8.3 - - - - <br /> -- %Difference: 1.0 <br /> Conc.of trS.S.-5*1.0.of Sample x 100 <br /> SEG A ANALYTICAL e7 —�- splxe Conc.ArJ led <br /> Cone a7 M.S.•Cane.of M.S.Q. x 100 <br /> ~/ Istive 7i piHererce: <br /> ((( <br /> Ii abeth W. aekl Conc.of M.S.t 1042910.WAT <23> <br /> _(P jest Manager <br />