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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 Stnker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> �„ F <br /> lame Tech Services, Inc Client Project ID Shell, Stockton /960823-K2 <br /> 985 Timothy Drive Matrix Liquid <br /> "San Jose, CA 95133 <br /> Attention Jim Keller Work Order# 9608F64 -01-02 Reported Sep 18, 1996 <br /> ry r v} rte}} r v ~ vs } v r } r <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> CC Batch#: GCOW99613TEX03A GC0909968TEX03A 13130909966TEX03A GC090996BTIX03A <br /> Analy. Method. EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep Method EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: G Fish G Fish G Fish G Fish <br /> MS/MSD # 960810703 960810703 960810703 960810703 <br /> Sample Conc . N D N D N D N D <br /> Prepared Date- 9/9/96 9/9/98 9/9/96 9/9/96 <br /> Analyzed Date: 9/9/96 9/9/96 9/9/96 9/9/96 <br /> Instrument I D #• GCHP3 GCHP3 GCHP3 GCHP3 <br /> Conic Spiked- 10pg/L 10pg/L 10Ng/L 30pg/L <br /> Result: 94 8 9 87 27 <br /> MS % Recovery- 94 89 87 90 <br /> pup Result: 99 9 3 91 29 <br />. MSD % Recov. 99 93 91 97 <br /> RPD 52 44 45 71 <br /> RPD Limit: G-25 0-25 0-25 0-25 <br /> LCS #. BLK090996 BLK090996 BLK090996 BLK090996 <br /> Prepared Date- 9/9/96 9/9/96 9/9/96 9/9/96 <br /> Analyzed Date- 9/9/96 9/9/96 9/9/96 9/9/96 <br /> Instrument 1.10 # GCHP3 GCHP3 GCHP3 GCHP3 <br /> Conc. Spiked. t0pg/L 10ug/L 10pg/L 30Ng/L <br /> LCS Result: 10 98 94 30 <br /> LCS % Recov.. 100 98 94 100 <br /> MS/MSD 60-140 60-140 60-140 60-140 <br /> LCS 70-130 70-130 70-130 70-130 <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 /> EQ I 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 If <br /> he recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> ante ence,the LCS recovery Is to be used to validate the batch <br /> g F nn <br /> Project Manager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 960SF64 BLA 1 n <br />