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November 15, 1996 <br /> Metals QC Report for Sample Log 15920 (cont'd) <br /> From Southland / Stockton (Project# 02070023016504) <br /> Sample Spiked for MS/MSD 15920-01 <br /> Matrix Spikes <br /> MS MSD Date Date <br /> Analyte % Recov % Recov RPD EPA Method Di ested Analyzed <br /> Lead (Pb) 82 91 10 7421 11/14/96 11/15/96 <br /> MS = Matrix Spike MSD = Matrix Spike Duplicate RPD = Relative Percent Difference <br /> Spike Recovery Limits for Matrix Spikes are 75 - 125% The RPD Limits are t 20% <br /> Michelle L Anderson <br /> Inorganics Supervisor <br />