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ail � <br /> Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 96M FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510) 988 9673 <br /> ,!D- Ana ytieaI 819 Stnker Avenue Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> ,}Blaine Tech Services, Inc rvV, Client Project ID ' Chevron 9-8632/960207-Z41 <br /> 985 Timothy Drive Matrix Liquid <br /> San Jose, CA 95133 <br /> Attention Jim Keller Work Order # 9602583 -01-03 Reported Feb 27, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte. Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch# GCO21296BTEX22A GCO21296BTEX22A GCO21296BTEX22A GCO21296BTEX22A <br /> Analy Method EPA 6020 EPA 8020 EPA 8020 EPA 8020 <br /> Priep Method EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst. D Jirsa D Jima D Jirsa D Jirsa <br /> MS/MSD # 960245105 960245105 960245105 960245105 <br /> Sample Conc N D N D N D N D <br /> Prepared Date 2/9/96 2/9/96 2/9/96 2/9/96 <br /> Analyzed Date 2/9/96 2/9/96 2/9/96 2/9/96 <br /> Instrument I D # GCHP22 GCHP22 GCHP22 GCHP22 <br /> Conc Spiked 10pg/L 10ug/L 10pg/L 30pg/L <br /> Result 10 10 10 31 <br /> . MS % Recovery 100 100 100 10.3 <br /> Dup Result 10 10 10 32 <br /> MSD % Recov 100 100 100 107 <br /> RPD* 00 00 00 32 <br /> RPD Limit 0-50 0-50 0-50 0-50 <br /> LCS # BLK021296 BLK021296 BLK021296 BLK021296 <br /> Prepared Date. 2/9/96 2/9/96 2/9/96 2/9/96 <br /> Analyzed Date- 2/9/96 2/9/96 2/9/96 2/9/96 <br /> Instrument I D # GCHP22 GCHP22 GCHP22 GCHP22 <br /> Conc Spiked 10lig/L 10ug/L 10pg/L 30Ng/L <br /> LCS Result 99 98 99 30 <br /> LCS % Recov : 99 98 99 loo <br /> ---MS/MSD <br /> LCS 70-130 70.130 70-130 70-130 <br /> Control Limits <br /> Please Mote <br /> The LCS is a control sample of known,interferent-free matrix that Is analyzed using the same reagents, <br /> SE I A YTICAL 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 fail within specified control limits due to matrix <br /> Interference,the LCS recovery is to be used to validate the batch <br /> Project Manager **MS=Matrix Spike, MSD=MS Duplicate,RPD=Relative%Difference 9602583 BLA <2> <br />