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Sequoia 680 Chesapeake Drive Redwood City CA 94063 {650) 364 9600 FAX(650)364 9233 <br /> 404 tai Wtgct Lane Walnut Creek CA 94598 (510) 988 9600 FAX (510) 988 9673 <br /> Analytical 819 Striker Avenuc Suite 8 Sacramento CA 95834 (916) 921 %00 FAX (916) 921 0100 <br /> 6 40 <br /> EA Engineering Science &Tech Client Prol ID Exxon 7-3942, 5153942 1300 Sampled 03/03/98 <br /> 3468 Mt Diablo Blvd Ste B100 Sample Descript UVB-MW2 Received 03/04/98 <br /> Lafayette, CA 94549 Matrix LIQUID <br /> Analysis Method EPA 8260 Analyzed 03/11/98 <br /> Attention Chnsta Marting Lab Number 9803307-22 Reported ( 3j31J98_ <br />� <br /> C Batch Number MS031198MTBEH6A <br /> n <br /> strument ID H6 <br /> Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> Ethanol 5000 N D <br /> t-Butanol 1000 N D <br /> Methyl t-Butyl Ether (MTBE) 20 N D <br /> Di-Isopropyl Ether (DIPE) 20 N D <br /> Ethyl t-Butyl Ether (ETRE) 20 N D <br /> t-Amyl Methyl Ether (TAME) 20 N D <br /> Surrogates Control Limits % % Recovery <br />'1,2-Dichloroethane-d4 76 114 90 <br /> I <br /> Analytes reported as N D were not present above the stated limit of detection <br /> 1E000IA ANALYTICAL - ELAP #1210 <br /> lq��A <br /> Pird Herling <br /> ct Manager Page 7 <br />