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y Sequoia 680 Chesapeake Dnve Redwood City,CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 N Wtget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical <br /> 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921-0100 <br /> Blaine Tech Services Client Prol ID Shell Stockton/971121-G2 Sampled 11/21/97 <br /> - 1680 Rogers Avenue Sample Descript MW-1 Received 11/24/97 <br /> - San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method EPA 8260 Analyzed 12/03/97 <br /> Attention Fran Thie _ Lab Number 9711 E94-01 -Reported 01J14198 <br /> QC Batch Number MS120397MTBEF3A <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 N D <br /> Di-Isopropyl EtherDIPE) 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 94 <br /> [BY <br /> JAN 1 5 i998 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA YTICAL - ELAP #1210 <br /> P Penner <br /> Project Manager Page i <br />