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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 /> � Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (9I6)421-9680 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 7 Gettler Ryan/Geostrategies Client Proi ID UNOCAL 0123, 280047 85 Sampled 06/22/98 - <br /> 6747 Sierra Court Suite J Sample Descnpt U-2 Received 06/22/98 , <br /> Dublin, CA 94568 Matrix LIQUID = <br /> Analysis Method EPA 8260 Analyzed 06/26/98 <br /> Attention Deanna Harding Lab Number 9806E65-03 " _ _ Reparted 07/17/98_ <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 /> 1,2-Dlchloroethane-d4 76 114 98 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01624 <br /> Granlcher <br /> Project Manager Page a <br />