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Sequoia 680 Chesapeake Drive Redwood Gty,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 /> �III� Analytical 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921-0100 <br /> i <br /> Blaine Tech Services Client Prol ID Shell Stockton/971224-D1 Sampled 12/24/97 <br /> 1680 Rogers Avenue Sample Descript DUP Received 12/24/97 <br /> San.lose, CA 95112 Matrix LIQUID <br /> Analysis Method EPA 8260 Analyzed 12/30/97 <br /> Attention Fran Thie Lab Number 9712F98-03 Reported 01113198 <br /> DC Batch Number MS123097MTBEH6A <br /> nstrument 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 /> 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 99 <br /> I <br /> Anaiytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA N ICAI - ELAP #1210 <br /> y Penner <br /> Project Manager Page 7 <br />