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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364.9600 FAX (415) 364-9233 <br /> 404 N. Wiget Lanc Walnut Creek,CA 94598 (510) 988-9600 FAX{510}988.9673 <br /> Analytical 819 Striker Avenue,Shite 8 Sacramento, CA 95834 (916) 921.9600 FAX(916)921.0100 <br /> Blaine Tech Services, Inc. Client Project ID: Chevron 9-0557/651116-Z3 <br /> 985 Timothy Drive Matrix: Liquid <br /> San Jose, CA 95133 <br /> Attention: Jim Keller Work Order #: 9511 D05-02, 05 Reported: Nov 29, 1995 <br /> (:QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> OC Batch#: GC1121956TEX03A GC112195STEX03A GC112195BTEX03A GC1121956TEX03A <br /> Analy. Method: EPA 6020 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 #: 9511A1302 9511AI302 9511A1302 9511A1302 <br /> Sample Cone.: N.D. N.D. N.D. N.D. <br /> Prepared Date: 11/21/95 11/21/95 11/21/95 11/21/95 <br /> Analyzed Date: 11/21/95 11/21/95 11/21/95 11/21/95 <br /> Instrument l.D.#,. GCHP3 GCHP3 GCHP3 GCHP3 <br /> Cone. Spiked: long/L 10pg/L 10ug/L 30ug/L <br /> Result: 9.7 9 7 9.5 29 <br /> MS % Recovery: 97 97 95 97 <br /> Dup. Result: 10 10 9.9 30 <br /> MSD % Recov.: 100 100 99 100 <br /> RPD: 3 0 3.0 4.1 3A <br /> RPD Limit: 0-50 0-50 0-50 0-50 <br /> LCS #: BLK112195 BLK112195 BLK112195 BLK112195 <br /> I <br /> Prepared Date: 11/21/95 11/21/95 11/21/95 11/21/95 <br /> Analyzed Date: 11/21/95 11/21/95 11/21/95 11/21/95 <br /> Instrument I.D.#: GCHP3 GCHP3 GCHP3 GCHP3 <br /> Cone. Spiked: 10pg/L 10u9/L 10lrg/L 30pg/L <br /> LCS Result: 9.2 9.1 9.1 27 <br /> LCS % Recov.: 92 91 91 90 <br /> MS/MSD <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, interferent-free matrix that is analyzed using the same reagents, <br /> es7ejy <br /> C NALYTICAL 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. 11 <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 /> Penner <br /> Project Manager "*MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative%Difference 9511005.BLA c2> <br />