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9233 <br /> Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (650) 364 9600 FAX (650) 364 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX (5 10) 988 9673 <br /> Analytical 819 Straker Avenue Suite 8 Sacramento CA 95834 {916} 921 9600 FAX {916) 911 0100 <br /> Blaine Tech Services, Inc Client Project ID Chevron 9-8264 / 971124-SI <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 9711 F41-01 Reported Dec 16, 1997 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Diesel <br /> QC Batch# GC1201970HBPEXZ <br /> Analy Method EPA 8015M <br /> Prep Method EPA 3520 <br /> Analyst G Fish <br /> MS/MSD # 9711 F4 101 <br /> Sample Cone 110 <br /> Prepared Date 12/1/97 <br /> Analyzed Date 12/4/97 <br /> Instrument 1 D # GCHP4 <br /> Cone Spiked 1000pg/L <br /> Result 1000 <br /> MS % Recovery 89 <br /> Dup Result 940 <br /> MSD % Recov 83 <br /> RPD 62 <br /> RPD Limit 050 <br /> LCS # BLK120197 <br /> Prepared Date: 12/1/97 <br /> Analyzed Date. 12/4/97 <br /> Instrument I D # GCHP4 <br /> Cone Spiked 1000pg/L <br /> LCS Result- 990 <br /> LCS % Recov • 99 <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 /> SEQUOIA ANALYTI AL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> t 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 /> 16p-- interference,the LCS recovery is to be used to validate the batch <br /> Peggy ginner <br /> Protect Man er **MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative% Difference 9711F41 BLA z5y <br />