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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364-9600 FAX(415) 364-9233 <br /> Analytical 1900 Bates Avenue,Suite L Concord,CA 94520 (510) 686 9600 FAX(510)686 9689 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> v <br /> RESNA Client Project 10 150077 01, Holt Brothers <br /> '1710 Main Street Matrix Liquid <br /> Escalon, CA 95320 <br /> Attention John Lane OC Sample Group 4F338014 Reported Jun 22, 19941 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Diesel <br /> Method: EPA 8015 <br /> Analyst: M Cassidy <br /> MS/MSD <br /> Batch# 41=33803 <br /> Date Prepared: 6/9/94 <br /> Date Analyzed 6/15/94 <br /> Instrument I D.# GCHP-5 <br /> Conc Spiked 600 mg/L <br /> Matrix Spike <br /> % Recovery: 54 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery. 65 <br /> Relative% <br /> Difference 18 <br /> LCS Batch#• - <br /> Date Prepared* <br /> Date Analyzed <br /> Instrument I.D #• - <br /> LCS% <br /> Recovery: - <br /> % Recovery <br /> Control Limits 28-122 <br /> Please Note <br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> SEQUOIA ANALYTICAL preparation and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> fortified with known quantities of specific compounds and subjected to the entire analytical procedure if <br /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> interference,the LCS recovery is to be used to validate the batch <br /> Vickie Tague Clark <br /> Project Manager 41733801 WAT <11> <br />