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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 (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 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br />„ Gettler-Ryan/Geostrategies--� ---- wClient-Prof ID Former Unocal Facility #5098 -y- - Sampled 09/15/98 -- <br /> 6747 Sierra Court Suite J Sample Descnpt MW-16 Received 09/15/98 a <br />, Dublin, CA 94568 Matrix LIQUID <br />_ Analysis Method EPA 8260 Analyzed 09/24/98 <br /> Attention Deanna Harding Lab Number__9809909-08 - Reported 09j30198 - <br /> QC Batch Number MS092398MTBEH6A - - - - - - - - - - <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 N D <br /> DI-Isopropyl Ether(DIPS) 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 /> I 2-Dichloroethane-d4 76 114 95 <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Gr Mann r <br /> ct Manager Pae 15 <br /> 9 <br />