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' <br /> Sequoia <br /> *� u�la 680 Chcsapcakc Dnvc Rcdwcod City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> J <br /> q 404 N W19et Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510) 988 9673 <br /> frlll� Analytical 819 Striker Avenuc Suite 8 Sacramento CA 95834 (9 16) 921 9600 FAX (916)921 0100 <br /> EA Engineering Science &Tech Client Prod ID Exxon 7-3942, 51539 42 1300 Sampled 11/11/97 <br /> 3468 Mt Diablo Blvd Ste B100 Sample Descrlpt RW1 Received 11/12/97 <br />'Lafayette, CA 94549 Matrix LIQUID <br /> Analysis Method EPA 8260 Analyzed 11/21/97 <br /> Attention Christa Marting Lab Number 9711732-12 Reported 12J02197 <br /> C Batch Number MS112197MTBEF3A <br /> strument ID F3 <br /> Oxygenate Compounds (EPA 8260) <br />'Analyte Detection Limit Sample Results <br /> ug/L ug/L <br />'Ethanal 6250 N D <br /> t-Butanol 1250 N D <br /> Methyl t-Butyl Ether (MTBE) 25 N D <br /> Di-Isopropyl Ether (DIPE) 25 N D <br />'Ethyl t-Butyl Ether (ETBE) 25 N D <br /> t-Amyl Methyl Ether (TAME) 25 N D <br /> Surrogates Control Limits % % Recovery <br />'1,2-Dichloroethane-d4 76 114 86 <br /> lie <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> Analytes reported as N D were not present above the stated ILMIt of detection <br /> 1EO0OIA ANALYTICAL - ELAP 01210 <br /> d Herling <br /> Ir ct Manager Paye 16 <br />