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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 /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921 Ol0o ^ <br /> 1455 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 /> Blaine Tech Services Client Prol ID Shell 3725 S Tracy Blvd Sampled 03/05/99 <br /> 1680 Rogers Avenue Sample Descrlpt MW-3A Received 03/08/99 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mad/8020 Analyzed 03/18/99 <br /> Attention Fran Thle Lab Number 9903442-03 Reported 03J22J99 <br /> QC Batch Number GC031899BTEX02A <br /> Instrument ID GCHP02 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 50 N D <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 050 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trlfluorotoluene 70 130 94 <br /> Anaiytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Project Manager <br /> Page 7 <br />