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i 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 /> alAnalytical <br /> 819 Striker Avenue Suite B Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> EA Engineering Science &Tech Client Prod ID _ Exxon 7-3942, 5153942 1300 Sampled 03/03/96 <br /> 3468 Mt Diablo Blvd Ste B100 Sample Descript MW6 Received 03/04/98 <br /> Lafayette, CA 94549 Matrix LIQUID _ <br /> Analysis Method EPA 8260 Analyzed 03/11/98 <br /> Attention Christa Marting Lab Number 9803305-05 Reported 03f31 f98 <br /> nBatch Number MS031198MTBEH6A <br /> strument 1D H6 <br /> Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> ug/L u911- <br /> Ethanol <br /> g/LEthanol 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-Dichloroethane-d4 76 114 91 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> IEQUOIA ANALYTICAL,-- ELAP #1210 <br /> 1,--7 */"� <br /> and Herling <br /> sect Manager Pae 9 <br /> 4 <br />