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Sequoia 680 Chesapeake Drive Redwood City, CA 94065 (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)92 1-0100 <br /> "'Or6jecit''I b: Chevron 9 <br /> i -0557, 95051:--'6-'- <br /> Blaine Tech Services, Inc. Client "--G' 2 <br /> ,-.985 Timothy Drive <br /> Matrix: Liquid <br /> :--.-San Jose, CA 95133 <br /> `'Attentlon: Jim Keller Work Order#: 9505C22-07 Reported: May 30, 1995-�! <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch#: GC05245BTE>=A GC052295BTEX20A GCO52295BTEX20A GC052295BTEX4A <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prop. Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: J.Minkel J.Minkel J. Minkel J.Minkel <br /> MS/MSD#: 950581104 950581104 950581104 950581104 <br /> Sample Conc.-. N.D. N.D. N.D. N.D. <br /> Prepared Date: 5/22/95 5/22/95 5/22/95 5/22/95 <br /> Analyzed Date: 5/22/95 5/22/95 5/22/95 5/22/95 <br /> Instrument I.D.#: GCHP20 GCHP20 GCHP20 GCHP20 <br /> Conc. Spiked: 101ig/L 10pg/L 10yg/L 301i9/L <br /> Result: 10 10 10 30 <br /> MS%Recovery: 100 100 100 100 <br /> Dup. Result: 11 10 10 31 <br /> MSD %Recov.: 110 1100 1100 1103 <br /> RPD: 9.5 0.0 0.0 3.3 <br /> RPD Limit: 0-50 0-50 0-50 0-50 <br /> LCS#: <br /> Prepared Date: <br /> Analyzed Date: <br /> Instrument I.D.#: <br /> Conc. Spiked: <br /> LCS Result: <br /> LCS% Recov.: - - - <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 /> S U A 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. N <br /> the recoveryof analytes from the matrix spike does not fall within specified control limits due to matrix <br /> e VyPenner linterference,the LCS recovery Is to be used to validate the batch. <br /> Project Manager MS=Matrix Spike, MSD=MS Duplicate,FtPD=Relative%Difference 9505C22.BLA 42> <br /> 4� <br />