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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 /> Iwo Anal t1Ca1 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921 0100 <br /> Y 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> • <br /> Gettler Ryan�Geostrategies--- - - Client Proj I© Unocal 5886, 18013785 ------ --- - Sampled 06/17/98 <br /> 6747 Sierra ourt Suite J Sample Descnpt MW-3 Received 06/17/98 <br /> Dublin, CA 94568 Matroc LIQUID - <br /> Analysis Method EPA 8260 Analyzed 06/27/98 <br /> Attention Deanna Harding _ Lab Number_ 9806C26-04 " Reported 07J09j98 <br /> Batch Nurnber MS062798826052A <br /> istrument ID MS-2 <br /> Fuel Oxygenates by EPA 8260 <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> methanol 500 N D <br /> t-Butanol 100 2600 <br /> Methyl t-Butyl Ether (MTBE) 20 7300 <br /> DI-Isopropyl Ether (DIPS) 20 N D <br /> Ethyl t-Butyl Ether (ETRE) 20 N D <br /> t-Amyl Methyl Ether (TAME) 20 20 <br /> 4§urrogates Control Limits % % Recovery <br /> 1 2-Dichloroethane-d4 76 114 93 <br /> Oalytes reported as N D were not present above the stated limit of detec•icn <br /> 3E000IA ANALYTICAL - ELAP #1271 <br /> cAifLranicher <br /> Manager Page B <br /> 1� <br />