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Sequoia 680 Chesapeake Drive Redwood Ciry CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (925)968-9600 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)79Z-1865 FAX(707)792-0342 <br /> Getter Ryan/Geostrategies Client Prot ID Former Unocal Facility #5098 Sampled 09/15/98µ - <br /> 6747 Sierra Court Suite J Sample Descript MW-12 Received 09/15/98 - <br /> = Dublin, CA 94568 Matrix LIQUID - <br /> Analysis Method EPA 8260 Analyzed 09/25/98 <br /> Attention Deanna Harding Lab Number 9809909-04 Reported 09J30198 <br /> QC Batch Number MS092398MTBEH6A <br /> Instrument ID H6 <br /> Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> Lig/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) 20 N D <br /> Ethyl t-Butyl Ether (ETRE) 20 N D <br /> t-Amyl Methyl Ether (TAME) 20 N D <br /> Surrogates Control Limits% % Recovery <br /> 1 2-Dichloroethane-d4 76 114 92 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 461210 <br /> Granicher <br /> Iect Manager Page 6 <br />