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Sequoia 6b1 Chesapeake Drive Redwood City CA 94v63 (650) 364-9600 FAX(650)364-9233 <br /> 404 N Wiget lane Walnut Creek.CA 94598 (915)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 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Cambria - - Client Prod ID Shell 420 W Kettleman Lane - - Sampled 10/29/98 <br /> 1144 65th St Suite C Sample Descrtpt SB-D(3 5') Received 10/30/98 <br /> Oakland, CA 94608 Matrix SOLID Extracted 11/05/98 <br /> Analysis Method EPA 8260 Analyzed 11/06/98 <br /> Attention Aubrey Coal Lab Number 9811146-07 Reported 11J1 7198 <br /> QC Batch Number MS110498MTBEEXA <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 (DIPS) 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-Dlchloroethane-d4 70 121 91 <br /> Analytes reported as N D e not present above the stated limit of detection <br /> SEQUO A L ICAL - ELAP #1210 <br /> Pe Pen er <br /> Project Manager Page 15 <br />