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Sequoia 680 Chesapeake Dnve Redwood City, CA 94063 (650) 364-9600 FAX(650)364 9233 <br /> 4D 404 N Wiget Lane Walnut Creek, CA 94598 (510) 988 9600 FAX(510) 988 9673 <br /> low Analytical 8 t 9 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916) 921 0100 <br /> µBlaine Tech Services Client Proi ID Shell Stockton/971009-G1 Sampled 10/09/97 _ <br /> 1680 Rogers Avenue Sample Descript MW-3 Received 90/10/97 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method EPA 8260 Analyzed 10/18/97, <br /> -- r-_, Thntt_ T QTS AT.irrmhnr []7in�.Ot-f]=. - _ _ RCnnrt�t'i�ifl-M'Z-107-- <br /> m iNitellllt]fl Fran IL-aU INuii."ci ..+. .vaa.-vv _ _ ..y.. •_ .+1�.+�.+. <br /> QC Batch Number MS1 01 797MTBEF2A <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 /> Metyl t-Butyl Ether (MTBE) 20 72 <br /> Di-Isopropyl EtherPBE) <br /> PE) 20 N D <br /> Butyl <br /> Ethyl t- Ether 20 N D <br /> t-Amyl Methyl Ether (TAME) 20 N D <br /> Surrogates Control Limits% % Recovery <br /> 1,2-Dichloroethane-d4 76 114 89 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQU Ill A A ICAL - ELAP #1210 <br /> Peggy Penner • <br /> Project Manager Page 13 <br />