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Sequoia 660 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 /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916)921-9600 FAX(916)921-0100 <br /> E455 McDowell Blvd. North.Ste.D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 1551 Industrial Road San Carlos, CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> €_€; €€ :x:::::_:::::::T.:.=::;s:::::::::......_.::::::.art <br /> .. ......... .. ................ .. ... <br /> Blaine Tech Services Client Proj. ID: Chevron 9-0557/990217-K1 Sampled: 02/17/99 <br /> 1680 Rogers Avenue Sample Descript: MW-3 Received: 02/17/99 <br /> San Jose, CA 95112 Matrix: LIQUID <br /> Analysis Method: 8015Mod/8020 Analyzed: 02/26/99 <br /> Attention: Christine Lillie Lab Number: 9902856-03 Reported: 03/04/99 <br /> QC Batch Number: GCO22699802005A <br /> Tota[ Purgeable Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> ug/I ug/I <br /> TPPH as Gas 50 N.D. <br /> Methyl t-Butyi Ether .................... 2.5 .................... 45 <br /> Benzene 0.50 N.D. <br /> Toluene 0.50 N.D. <br /> Ethyl Benzene 0.50 N.D. <br /> Xylenes (Total) 0.50 N.D. <br /> Chromatogram Pattern: <br /> Surrogates Control Limits % % Recovery <br /> Trifiluorotoluene 70 130 99 <br /> Analytes reported as N.D.were not present above the stated limit of detection. <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> i Mei Shin <br /> oject Manager Page: 3 <br />