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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)931-0100 <br /> Blalne Tech Services, Inc. Client Project 10: Chevron 9-0557/950803-S1 <br /> :-,985 Timothy Drive Matrix: Liquid <br /> San Jose, CA 95133 <br /> 11995_%' <br /> .....Attention: JimKeller Work Order#: 9508383-06 Reported: Augug..14,...... <br /> ... ...... ..... <br /> ........ ...... .. ............ .. <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch#: GC08W95BTEX03A GCO80895BTEX03A GC.WM5BTE>03A GC080895BTEX03A <br /> Analy.Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep, Method: EPA 5030 EPA 5= EPA 5030 EPA 5030 <br /> Analyst: I Minkel J.Minkel J. Minkel J.Minkel <br /> MS/MSD#: 9507,111403 9507J1403 9507JJ403 9507J1403 <br /> Sample Cone.: N.D. N.D. N.D. N.D. <br /> Prepared Date: 8/8/95 8/8/95 8/8/95 8/s/95 <br /> Analyzed Date: 8/8/95 8/8/95 8/8/95 8/8/95 <br /> Instrument I.D.#: GCHP3 GCHP3 GCHP3 GCHP3 <br /> Cone. Spiked: 10pg/L 10pg/L 10pg/L 30pg/L <br /> Result: 9.8 10 9.7 29 <br /> MS% Recovery: 98 100 97 97 <br /> Dup. Result: 10 9.9 9.9 30 <br /> MSD % Recov.: 100 99 99 100 <br /> RPD* 2.0 1.0 2.0 3.4 <br /> RPD Limit: 0-50 0-50 0-50 0-50 <br /> .......... <br /> ... . <br /> X" ..... <br /> .... ..... <br /> ................ <br /> LCS #: <br /> Prepared Date: <br /> Analyzed Date: <br /> Instrument I.D.#: <br /> Cone. Spiked: <br /> LCS Result: <br /> LCS % Recov.: <br /> /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 /> SEQ I 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 recoveryof 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 /> P 7gy Pennerr <br /> Project Manager M S=Matrix Spike, M SD=MS Duplicate, RPD=Relative%Difference 9508383.BLA <2> <br /> 4 <br />