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Sequoia 680 Chesapeake Drive Redwood C" 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 819 Stnker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)92t 01p0 <br /> Get ler Rya , Geostrategles- -- - - Client Proj ID- -Chevron 9-6171, Stockton - Sampled 11/11/97 - <br /> 6747 Sierra Qourt Suite G Sample Descript MW-5 Received 11/11/97 <br /> R' Dublin, CA 94568 Matrix LIQUID <br />°a Analysis Method EPA 8260 Analyzed 11/18/97 <br /> 9 Attention Deanna Harding Lab Number 971161"6_ _ _- - Reported 11j21j97 <br /> QC Batch Number MS1 i 1897MTBEF2A <br /> Instrument ID F2 <br /> Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L. <br /> Ethanol 6250 N D <br /> t-Butanol 1250 N D <br /> Metyl t-Butyl EtherMTBE) 25 N D <br /> Di-Isopropyl Ether�ETBE) <br /> DIPE) 25 N D <br /> Ethyl t-Butyl Ether 25 N D <br /> t-Amyl Methyl Ether (TAME) 25 N D <br /> Surrogates Control Limits% % Recovery <br /> 1,2-Dichloroethane-d4 76 114 96 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 41210 <br /> 9 <br /> ect Manager Page 10 <br />