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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 (510)988-9600 FAX(510)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Blaine Tech Services Client Proj ID Shell 2494 Fremont Sampled 05/11/98 <br /> 1680 Rogers Avenue Sample Descript EB Received 05/12/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method EPA 8260 Analyzed 05/20/98 <br /> Attention Fran Thie Lab Number 9805902-04 Reported 05J29J98 <br /> QC Batch Number MS051998MTBEF2A <br /> Instrument ID F2 <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 N D <br /> DI-Isopropyl Ether (D1PE) 20 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-Dlchloroethane-d4 76 114 101 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA A A YTICAL - ELAP #1210 <br /> y ner <br /> ct anager Page 7 <br />