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Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Cane 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 9-2033/951116-Z1 <br /> 985 Timothy Drive Matrix Liquid <br /> San Jose, CA 95133 <br /> Attention Jim Keller Work Order # 9511 D14-02-04 Reported Nov 30, 1995 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> OC Batch# GC1117956TEX17B GC111795BTEX17B GC111795BTEX178 GC11179513TEX17B <br /> Analy Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep Method EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst J woo J woo J Woo J Woo <br /> MS/MSD # 951148101 951148101 951148101 951148101 <br /> Sample Conc N D N D N D N D <br /> Prepared Date 11/17/95 11/17/95 11/17/95 11/17/95 <br /> Analyzed Date 11/17/95 11/17/95 11/17/95 11/17/95 <br /> Instrument I D # GCHP17 GCHP17 GCHP17 GCHP17 <br /> Conc Spiked 10yg/L 10pg/L 10Ng/L 30pg/L <br /> Result 11 11 11 32 <br /> MS % Recovery 110 110 110 107 <br /> Dup Result 11 10 10 29 <br /> MSD % Recov 110 100 100 97 <br /> RPD 00 95 95 98 <br /> RPD Limit 050 0-50 050 0-50 <br /> LCS # BLK111795 BLK111795 BLK111795 BLK111795 <br /> Prepared Date 11/17/95 11/17/95 11/17/95 11/17/95 <br /> Analyzed Date 11/17/95 11/17/95 11/17/95 11/17/95 <br /> Instrument I D # GCHP17 GCHP17 GCHP17 GCHP17 <br /> Conc Spiked 10Ng/L 10Ng/L 10pg/L 30ug/L <br /> LCS Result 11 11 11 34 <br /> LCS %Recov 110 110 110 113 <br /> LCS 71-133 72-128 72-130 71-120 <br /> Control Limits <br /> Please Note <br />. The LCS is a control sample of known,interferent4ree matrix that is analyzed using the same reagents, <br /> S U t ALYTICAL 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 /> ggy Penner <br /> Project Manager ""MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative%Difference 9511 D14 BLA <4> <br />