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Sequoia 680 Chesapeake Dnve Redwood City CA 94063 <br /> (650) 364 9600 FAX (650)364 9233 <br /> 404 11 Wiget line Walnut Creek CA 94598 (510) 988 9600 FAX (5 10)988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br />' Pacific Environmental Group Client Prot ID 311-174 1 A/5447,Stockton Sampled 02/04/98 <br /> 2025 Gateway Place, Suite 440 Sample Descnpt NE-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 9802975-01 Reported 02J20/98 <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 12000 <br /> Methyl t-Butyl Ether (MTBE) .. 100 4900 <br />' DI-Isopropyl EtherDIPE) 100 N D <br /> Ethyl t-Butyl Ether (ETRE ) 100 N D <br /> t-Amyl Methyl Ether(TAME) 100 N D <br /> Surrogates Control Limits % % Recovery <br /> 1,2-Dichloroethane-d4 70 121 96 <br /> 1 <br />' Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Granicher <br /> fpd <br /> ofect Manager Page y <br />