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Sequoia °Chesapeake Drive Redwood C1ry CA 94063 (650) 364-9600 FAX(650)364-9133 <br /> 404 N Wlget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-%73 <br /> 819 5tnker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)92t-0100 <br /> fr�Il� Analytical 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Gettler Ryan/Geostrategies - - Client Prot ID S Unocal SS#5886/2701 W-March Sampled-09/01/98 <br /> 6747 Sierra Court Suite J Sample Descript MW-2 Received 09/02/98 = <br /> Dublin, CA 94568 Matrix LIQUID = <br /> Analysis Method EPA 8260 Analyzed 09/08/98 <br /> Attention Deanna Harding Lab Number 9809049-03 Reported 10101198 - <br /> nstrument ID MS2 <br /> Fuel Oxygenates by 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 2900 <br /> D1-Isopropyl Ether (DIPE) 20 N D <br /> Ethyl t-Butyl Ether (ETBE) 20 N D <br /> t-Amyl Methyl Ether (TAME) 2 0 5 1 <br /> Surrogates Control Limits % % Recovery <br /> 1,2-Dlchloroethane-d4 76 114 90 <br /> is <br /> analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> T Granicher <br /> Project Manager Page 5 <br /> s <br />