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. LR_,u=z' - r Vr -'7x1= t'•:_�- . _ <br /> R <br /> EUAN MICAL J U L 1 7 1991 <br /> 1900 Bates Avenue • Su se LM • Concord,Calilorria 94520 til f i I r l i;•,1C t'l I Fli_t't`�_ALI 11 <br /> `k <br /> (415)6669500 • FAX(415)666 9684 1 <br /> - <br /> Kaprealian Engineering.inc- Client Project ID: Unocal,601 E.Ketileman Lana,Lodi <br /> P.O.Bax 995 <br /> Benicia,CA 94510 Reported: Mar 21' 1991 <br /> Be <br /> Attention: Mardo Kaprealian P E. QC Sample Group: 1030591-95 <br /> QUALITY CONTROL DATA REPORT <br /> =ANAI-YTE <br /> Lead <br /> MethoJ: EPA7421 <br /> Analyst: N.Herrera <br /> Reporting Units: mg/kg <br /> Date Analyzed: Mar 21, 1991 <br /> QC Sample#: 1034)591 <br /> Sample Cone.: 17 <br /> Spike Cone. 50 <br /> Added: <br /> Conc.Matrix <br /> Spike: 54 <br /> Matrix Spike 74 <br /> %Recovery: <br /> Conc.Matrix <br /> Spike Dup.: 58 <br /> Matrix Spike <br /> Duplicate 82 <br /> %Recovery: <br /> Relative <br /> %Difference: 7.1 <br /> %Rernvery: Co"c•of M.S.-Gonc.of Sample <br /> X 100 <br /> ---"SEQUOIA ANAk_YTICAL Spike Corsa Added <br /> /��• Relative%D Herence: Conc.al M.S.-Conc.of M.S.D. <br /> X 100 <br /> (Conc.of M.S. +Ccmc.of M.S.D.)/2 1030591.KE1 <11> <br /> Belinda C.Vega <br /> Laboratory <br />