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Sequoia 680 Chesapeake Drive 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 4100 <br /> 'Blaine Tech Services, Inc Client Project ID Chevron 9-8632/960207-Z4 <br /> 985 Timothy Drive Matrix Liquid <br /> } San Jose, CA 95133 <br /> Attention Jim Keller Work Order# 9602583-04 Reported Feb 27, 1996,,' <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> OC Batch# GCO21396BTEX22A GCO21396BTEX22A GCO21396BTEX22A GCO21396BTEX22A <br /> Analy Method. EPA 8020 EPA 802D EPA 8020 EPA 8020 <br /> Prep Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst D Jirsa D Jirsa D Jima D Jirsa <br /> MS/MSD # 960264908 960264908 960264906 960264908 <br /> Sample Conc N D N D N D N D <br /> Prepared Date 2/13/96 2/13/96 2/13/96 2/13/96 <br /> Analyzed Date 2/13/96 2/13/96 2/13/96 2/13/96 <br /> Instrument I D # GCHP22 GCHP22 GCHP22 GCHP22 <br /> Conc Spiked: 10pg/L 10iug/L 10ug/L 30yg/L <br /> Result 10 11 11 35 <br />. MS % Recovery 100 110 110 117 <br /> Drip Result 11 11 11 35 <br /> MSD % Recov 110 110 110 117 <br /> RPD 95 00 00 00 <br /> RPD Limit 0-50 0-50 0-50 0-50 <br /> { v <br /> LCS # BLK021396 BLK021396 BLK021396 BLK021396 <br /> Prepared Date- 2/13/96 2/13/96 2/13/96 2/13/96 <br /> Analyzed Date 2/13/96 2/13/95 2/13/96 2/13/96 <br /> Instrument I D # GCHP22 GCHP22 GCHP22 GCHP22 <br /> Conc Spiked 10Ng/L 10pg/L 10pg/L 30pg/L <br /> LCS Result- 11 10 11 32 <br /> LCS %Recov : 110 100 110 107 <br /> M M D <br /> LCS 70-130 70-130 70-130 70-130 <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 /> oPeg2 LYTICAL 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 /> enner <br /> anager '*MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative%Difference 9602583 BLA <3> <br />