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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek.CA 94598 (925)988-9600 FAX(925)988 9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> VQF Analytical 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Blaine Tech Services, Inc Client Project ID Shell 3725 S Tracy Blvd <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 9811 H56 -01-03 Reported Dec 14, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> , <br /> - Analyte Benzene - z Toluene -Ethyl - - -Xyienes BTEX as TPH <br /> Benzene <br /> OC Batch# GC120398802004A GC120396802004A GC120398802004A GC120398802004A GC120398802004A <br /> Analy Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 8015M <br /> Prep Method EPA 5030 EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst C Westwater C Westwater C Westwater C Westwater C Westwater <br /> MS/MSD # 8120018 8120018 8120018 8120018 8120018 <br /> Sample Conc N D N D N D N D N D <br /> Prepared Date 12/3/98 12/3/98 12/3/98 12/3/98 12/3/98 <br /> Analyzed Date 12/3/98 12/3/98 12/3/98 12/3/98 12/3/98 <br /> Instrument I D # HP4 HP4 HP4 HP4 HP4 <br /> Conc Spiked 20,ug/L - 20 Ng/L _ 20 ug/L 60 ug/L 360)ug/L <br /> Result 22 19 19 66 340 <br /> MS % Recovery 110 95 95 110 _ 94 • <br /> Dup Result 23 19 19 67 330 <br /> MSD % Recov 115 95 95 112 92 <br /> RPD 44 00 00 15 30 <br />-- - RPD Limit = =0 20= _ �,_ _ 0-20 <br />