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Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX (510)988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> EA Engineering Science &Tech Client Prol 1D Exxon 7-3942, 5153942 1300 Sampled 03/03/98 <br /> 3468 Mt Diablo Blvd Ste B100 Sample Descript MW10 Received 03/04/98 <br /> F <br /> afayette, CA 94549 Matrix LIQUID <br /> Analysis Method EPA 8260 Analyzed 03/11/98 <br /> Attention Christa Mar-ting _ Lab Number 9803305-09 Reported 03j31198 <br />�C Batch Number MS031198MTBEH6A <br /> strument ID H6 <br /> Oxygenate Compounds (EPA 8260) <br /> jAnalyte Detection Limit Sample Results <br /> ug/L ug/L <br /> fthBuanol 50000 N D <br /> tanol 10000 N D <br /> Methyl t-Butyl Ether (MTBE) 200 N D <br /> Di-Isopropyl Ether (DIPE) 200 N D <br /> IEthyl t-Butyl Ether (ETBE) 200 N D <br /> -Amyl Methyl Ether (TAME) 2D0 N D <br /> Surrogates Control Limits % % Recovery <br />'1,2-Dichloroethane-d4 76 114 88 <br /> 1 <br /> 1 h, <br /> Analytes reported as N D were not present above the stated limit of detection <br /> IEQUOIAANALY"TICA - ELAP #1210 <br /> J*r,d Herling <br /> Manager Page 17 <br />