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SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue a Smite LM • Concord, California 94520 <br /> (415) 686-9600 • FAX (415) 686-9689 <br /> Delta Environmental Consultants dent Project lD: Stockton aur National Guard <br /> ,3330 Data Drive `> <br /> Rancho Cordova, CA 95670 <br /> Attention. Hal Hanson QC Sample Grou • d100729�31 Reported• Nov 1. 1994 ' <br /> QUALITY CONTROL DATA REPORT r <br /> r <br /> ANALYTE <br /> Diesel <br /> Method. EPA 8015 <br /> Analyst: K Lee <br /> Reporting Units- mg/kg <br /> Date Analyzed: Oct 31. 1990 <br /> QC Sample#• Matrix Blank <br /> Sample Cone.: N.D. <br /> Spike Conc. <br /> Added: 300 <br /> Conc. Matrix <br /> Spike: 240 <br /> Matrix Spike <br /> % Recovery: 80 <br /> Conc. Matrix <br /> Spike Dup.. 240 <br /> Matrix Spike <br /> Duplicate <br /> % Recovery: 80 <br /> Relative <br /> % Difference: 0 <br />*SEQUOIA ANALYTICAL %Recovery Conc of M S -Conc of Sampie x 100 <br /> Spike Conc.Added <br /> ` `'� Seiawe%Chfference Conc.of M S.-Conc,of M S D x 100 <br /> Belinda C Vega Kona of M S. + Cone. of M S D! 2 <br /> Laboratory Director 1oo729 DLT <3a <br />