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SEQUOIA AIlAL TICAL <br /> 1900 Sates Avenue • Suite LM --96Co0ncord,Cahiornia 94520 <br /> (510)686.9066 FAX(510)686 <br /> c . " Client Project ID: Catellus•Stockton#1221.07 <br /> ERM-West(Sacramento) <br /> 2001 P Street,Suite 200 Reported Sep 27 <br /> 1991 <br /> ;Sacramento,CA 95818 <br /> • :.Attention: Shannon Sadler <br /> CC Sample Group: 1090775.80,1399 X100 <br /> OUALITY CONTROL DATA REPOR'r <br /> ANALYTE <br /> Organic Lead <br /> Method: LUFT <br /> Analyst: K.Anderson <br /> Reporting Units: mg1L <br /> Date Analyzed: Sep 18, 1591 <br /> QC Sample#: IOMT75 <br /> Sample Conc.: N.D. <br /> Spike Cone. 2.0 <br /> Added: <br /> Conc.Matrix <br /> Spike: 1.9 <br /> Matrix Spike 95 <br /> %Recovery: <br /> Conc.Matrix 21 <br /> Spike Dup.: <br /> Matrix Spike <br /> Duplicate <br /> %Recovery: 100 <br /> Relative 10 <br /> %Ditterence: <br /> 96 Recovery: Conc.of M.S.-Conc,of SamPIB <br /> x 100 <br /> SEQL1 IA ANALYTICA Spike Conc.Added <br /> V'{ J' <br /> Relative%Difference: CM'S' Conc.of M.S.D. x100 <br /> Rela <br /> (Conc.of M-S.+Conc.of M.S.D.}12 1090775.ERS <8� <br /> uli R.Malerstein <br /> of ct Manager <br />