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680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAx(650) 364-9233 <br /> Sequoia 404 N Wiget Lane Walnut Creek.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> �� Analytical 819 Striker Avenue Suite S Sacramento CA 95834 (936)921-4600 FAX(916)921-0300 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792 0342 <br />--- - --�- ---_ - �- --- - - __ --nnr� ••••„••�_ - <br /> — <br /> - - --- -- <br />;1 Gettler Ryan/Geostrategies— Client Prol ID UNOCAL 2859, Stockton - - —_ Sampled- 06/18/98 r <br /> 6747 Sierra Court Suite J Sample Descript MW-4 Received 06/18/98 <br /> Dublin, CA 94568 Matrix LIQUID Y <br /> Analyzed 06/28/98 <br /> Analysis Method EPA 8260 <br /> Attention Deanna Harding — _ Lab Number 9806C89-05 _ _ - _-__ _— Reported 07J10198 = <br /> QC Batch Number MS062898803052A - ----- - -- --—-- - - — - — - -- -�� <br /> Instrument !D MS-2 <br /> Fuel Oxygenates by 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 (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 /> 1,2-Dlchloroethane-d4 76 114 88 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> T ranicher <br /> Project Manager Page �� <br />