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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 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Stnkcr Avenue Suite 8 Sacramento CA 95634 (916) 921 9600 FAX (916)921 0100 <br /> EA Engineering Science &Tech Client Proj ED Exxon 7-3942, 5153942 1300 Sampled 03/03/98 <br /> 3468 Mt Diablo Blvd Ste B100 Sample Descnpt MW5 Received 03/04/98 <br /> Lafayette, CA 94549 Matrix LIQUID <br /> Analysis Method EPA 8260 Analyzed 03/11/98 _ <br /> Attention Chrlsta Marting Lab Number 9803305-04 Reported 03131198 <br /> !C Batch Number MS031198MTBEH6A --- -' <br />�istrument ID H6 <br /> Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> Ethanol 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 /> IEthyl t-Butyl Ether (E7BE) 20 N D <br /> -Amyl Methyl Ether (TAME) 20 N D <br /> Surrogates Control Limits % % Recovery <br /> 11,2-Dichloroethane-d4 76 114 92 <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> JEQUOIA ANALYTICAL - ELAP #1210 <br /> rd Herling <br /> Fict Manager <br /> Page 7 <br />