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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 /> WCAP Analytical 819 Striker Avenue,Suite 9 Sacramento, CA 95834 (916) 921-9600 FAX (916) 921-0100 <br /> ,5.Blaine Tecfies, Inc.......... Client Project ID: Chevron 9-0557, 950516-G2 <br /> 'i%5 Timothy Drive Matrix: Liquid <br /> ,....San Jose, CA 95133 <br /> �'�'Attentlon: Jim Keller Work Order#: 9505C22-02, 05 Reported: May 30, 1995` <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch#: GCO52395BTEX17A GC052395BTEX17A GCO52395BTEX17A GO0523958TEX17A <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep. Method: EPA 5030 EPA 5= EPA 5030 EPA 5030 <br /> Analyst: R.Vincent R,Vincent R.Vincent FL Vincent <br /> MS/MSD#: 9505CMI 950500601 9505CO601 9505100601 <br /> Sample Conc.: N.D. N.D. N.D. N.D. <br /> Prepared Date: 5/23/95 6/23/95 5/23/95 5/23/95 <br /> Analyzed Date: 5/23/95 5/23/95 5/23/95 5/23/95 <br /> Instrument I.D.#: GCHP17 GCHP17 GCHP17 GCHP17 <br /> Conc. Spiked: 10pg/L 10pg/L 10pg/L 30 pg/L <br /> Result: 8.8 8.6 9.2 27 <br /> MS %Recovery: 88 86 92 91 <br /> Dup. Result: 8.6 8.2 8.8 26 <br /> MSD%Recov.; 86 82 88 87 <br /> RPD: 2.3 4.8 4,4 4.9 <br /> RPD Limit: 0-50 0-50 0-50 0_50 <br /> itq <br /> ............... <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 /> SE A ALLYTICAL 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 /> SS <br /> gPenner interference,the LCS recovery is to be used to validate the batch. - <br /> Project Manager MS=Matrix Spike,MSD=MS Duplicate, RPD-Relative%Difference 9505C22,BLA 43> <br /> 9� <br />