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1 <br /> 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 /> a- Analytical 819 Sulker 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(701)792-0342 <br /> il Gettler Ryan/Geostrategies µ� Client Proj ID Former Unocal Facility #5098 Sampled 09/15/98 µ :1 <br />- 6747 Sierra Court Suite J Sample Descript MW-17 <br /> Received 09/15/98 - <br /> Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method EPA 8260 Analyzed 09/24/98 4 <br /> Attention Deanna Harding Lab Number 9809909-09 Reported 09f30/98 <br /> OC 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) 2 0 N D <br /> Di-Isopropyl Ether (DIPS) 2 0 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-Dichloroethane-d4 76 114 93 <br /> 0 <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Tod Granicher <br /> ct Manager Page 17 <br />