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Sequoia 680 Chesapeake Drive Redwood CEty 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 /> Analytical 819 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Paclflc Environmental Group Client Prol ID 311-174 1 A/5447,Stockton Sampled 02/04/98 <br />' 2025 Gateway Place, Suite 440 Sample Descript SE-20 Received 02/05/98 <br /> San Jose, CA 95110 Matrix SOLID Extracted 02/18/98 <br /> Analysis Method EPA 8260 Analyzed 02/18/98 <br /> Attention J Nelligan Lab Number 9802975-03 Reported 02120J98 <br />' OC Batch Number MS021798MTBEEXA <br /> Instrument ID F3 <br />' Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> ug/kg ug/kg <br />' Ethanol 25000 N D <br /> t-Butanol 5000 N D <br /> Methyl t-Butyl Ether(MTBE) 100 1800 <br />' Di-Isopropyl Ether (DIPE) 100 N D <br /> Ethyl t-Butyl Ether (ETBE) 100 N D <br /> t-Amyl Methyl Ether (TAME) 100 N D <br />' Surrogates Control Limits% % Recovery <br /> 1,2-Dichloroethane-d4 70 121 103 <br />' Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Granicher <br /> rd <br /> oject Manager Page 5 <br />