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Sequoia 680 Chesapeake Drive Redwood City, CA 94063 (650) 364 9600 FAX(650)364-9233 <br /> 4D 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 %00 FAX (510)986-%73 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 %00 FAX (916)921-0100 <br /> Blaine Tech Services Client Pro! ID Shell Stockton 980129-S1 Sampled 01/29/98 <br /> 1680 Rogers Avenue Sample Descript MW-9 Received 01/30/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method EPA 8260 Analyzed 02/06/98 <br /> Attention Fran Thie Lab Number 9801 H79-08 Reported 02112198 <br /> QC Batch Number MS020698MTBEF2A <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 (ETRE) 20 N D <br /> t-Amyl Methyl Ether (TAME) 20 N D <br /> Surrogates Control Limits % % Recovery <br /> 1,2-Dichloroethane-d4 76 114 101 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA AN AL - ELAP #1210 <br /> gy Penner <br /> feet Manager Page 22 <br />