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r� 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 /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 fAX(707)792-0342 <br /> Cambria Client Prod ID Shell 2494 Fremont --Sampled 04/30/98 <br /> 270 Perkins Ave Sample Descript S-1-55' Received 05/01/98 <br /> Sonoma, CA 95476 Matrix SOLID Extracted 05/04/98 <br /> Analysis Method EPA 8260 Analyzed 05/05/98 <br /> „ Attention Mike Murphy Lab Number 9805086-01 Reported 05J18198 <br /> QC Batch Number MS050498MTBEEXA <br /> instrument ID H6 <br /> Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> ug/kg ug/kg <br /> Ethanol 25000 N D <br /> t-Butanol 5000 N D <br /> Methyl t-Butyl Ether(MTBE) 100 N D <br /> Di-Isopropyl Ether (DIRE) 100 N D <br /> Ethyl t-Butyl Ether (ETBE) 100 N D <br /> t-Amyl Methyl Ether (TAME) 100 N D <br /> Surrogates Control Limits % % Recovery <br /> 1,2-Dichloroethane-d4 70 121 87 <br /> Analytes reported a D were not present above the stated limit of detection <br /> SEQU NA ICAL - ELAP #1210 _ <br /> Peggy Penner • <br /> Prolect Manager Page 2 <br />