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.l <br /> Sequoia 680 Chesapeake Drive Redwood City CA 94863 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Credo CA 94598 (925)988-9680 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue Suite B Sacramento CA 95834 (916)921-9608 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Gettler RyanZGeostrategies Client Proi ID UNOCAL 0123, 280047 85 Sampled 06/22/98 <br /> 6747 Sierra Court Suite J Sample Descript U-1 Received 06/22/98 = <br /> Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method EPA 8260 Analyzed 06/26/98 a <br /> Attention Deanna Harding Lab Number 9806E65-02 _ _ _Reported_07198 - <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> Ethanol 3000 N D <br /> t-Butanol 200 N D <br /> Methyl t-Butyl Ether(MTBE) 20 N D <br /> Di-Isopropyl Ether(DIPE) 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 76 114 114 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP *1624 <br /> o Granicher <br /> Project Manager page 4 <br />