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Sequoia 680 Chesapeake Dnve Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Blaine TeCh Services, Inc Client Project ID Chevron 9-8264/970521-1-13 <br /> 1680 Rogers Avenue Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 9705C27-01-04 Reported Jun 9, 1997 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Diesel <br /> QC Batch# GC0602970HBPEXB <br /> Analy Method EPA 8015M <br /> Prep Method EPA3510 <br /> Analyst B Sullivan <br /> MS/MSD # 9705C2702 <br /> Sample Cone N D <br /> Prepared Date 6/2/97 <br /> Analyzed Date 6/4/97 <br /> Instrument I D.# GCHP4 <br /> Cone Spiked 1000)rg/L <br /> Result 860 <br /> MS %Recovery- 86 <br /> Dup Result- 880 <br /> MSD % Recov . 88 <br /> RPD 23 <br /> RPD Limit 0-50 <br /> LCS # BLK060297 <br /> Prepared Date 6/2/97 <br /> Analyzed Date 6/4/97 <br /> Instrument I D #, GCHP4 <br /> Cone Spiked. 1000pg/L <br /> LCS Result 830 <br /> LCS% Recov 83 <br /> 50-150 <br /> LCS 60-140 <br /> Control Limits <br /> Please Note <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br />. S I ANALYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample if <br /> fortified with known quantities of specific compounds and subjected to the entire analytical procedure <br /> the recovery of analm <br /> analytes from the matrix spike does not fall within specified control limits due to atrix <br /> interference,the LCS recovery is to be used to validate the batch <br /> te e Mer <br /> je Manager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9705027 BLA <5> <br />