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Sequoia 660 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N WISet 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 /> Analytical 1455 MCDoweil Blvd North Ste D Petaluma,CA 94954 (707)79Z-1965 FAX(707)792-0342 <br /> Is <br /> Blaine Tech Services Client Proi ID Chevron 9-9840/981223-Ll Sampled 12/23/98 <br /> 1680 Rogers Avenue Sample Descript MW-1 Deceived 12/28/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method EPA 8260 Analyzed 12/31/98 <br /> Attention Christine Lillie Lab Number 9812G28-01 Reported 01f11J99 <br /> QC Batch Number MS123198MTBEH6A <br /> Instrument ID H6 <br /> Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> Ethanol 500 N D <br /> t-Butanol 100 N D <br /> Methyl t-Butyl Ether (MTBE) 20 26 <br /> Di-Isopropyl Ether (DIPE) 2 0 N D <br /> Ethyl t-Butyl Ether (ETBE) 20 N D <br /> t-Amyl Methyl Ether (TAME) 20 N D <br /> Surrogates Control Limits% % Recovery <br /> 1 2-Dichloroethane-d4 76 114 96 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> e 'egory <br /> Iect Manager Page t <br />