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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 (5i0) 988 9600 FAX (510)988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX (916)921 010D <br /> Blaine Tech Services Client Pro] ID Chevron 9-4275/971125-S1 Sampled 11/25/97 <br /> 1680 Rogers Avenue Sample Descnpt MW-3 Received 11/26/97 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method EPA 8260 Analyzed 12/05/97 <br /> Attention Fran Thie Lab Number 9711G19-03 Reported 12/12197 <br /> QC Batch Number MS120597MTBEF3A <br /> Instrument ID F3 <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 28 <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 98 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA LYTICAL - ELAP #1210 <br /> y er <br /> Project Manager Page 7 <br />