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Sequoia680 Chesapeake Drive Redwood C:M CA 94063 (650) 364 9600 FAX(650)364-9233 <br /> 404 N W'iget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Blaine Tech Services Client Prol ID Shell Stockton 980129-S1 Sampled 01/29/98 <br /> 1680 Rogers Avenue Sample Descript Franko Received 01/30/98 <br /> San Jose, CA 95112 Matrix LIQUID <br />_ Analysis-Method _EPA 8260 Analyzed 02/09/98 <br /> Attention Fran Thie Lab Number 9801H81-09 Reported-02f12f98— <br /> CC Batch Number MS020998MTBEF2A <br /> Instrument ID F2 <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 76 114 107 <br /> Analytes reported as N D were t pre 3ent above the stated limit of detection <br /> SEQUOIA L ICAL - ELAP #1210 <br /> Peggy Penn <br /> Project Manager Page 25 <br />