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Sequoia 680 Chesapeake Drive Redwood City, CA 94063 (650) 364 9600 IAX (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 /> 01 Gettler Ryan/Geostrategies Client Pro ID Chevron 9-1848, Manteca Sampled 08/26/97 <br /> 1@ 3164 Gold Camp Drive #240 Sample Descrlpt B2 Received 08/30/97 <br /> ,, Rancho Cordova, CA 95670 Matrix LIQUID ; <br /> ii Analysis Method EPA 8260 Analyzed 09/06/97 <br /> rr <br /> Attention Greg Gurss Lab Number 9708G33-10 Reported 09109197 <br /> QC Batch Number MS090597MT13EH6A <br /> Instrument ID H6 <br /> Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> Ethanol <br /> t-Butanol 500 N D <br /> Metyl t-Butyl Ether (MTBE) 100 N D <br /> DI-Isopropyl Ether (D1PE) 20 N D <br /> Ethyl t-Butyl Ether (EIRE) 20 N D <br /> t-Amyl Methyl Ether(TAME) 20 N D <br /> 20 ND <br /> Surrogates Control Limits % % Recovery <br /> 1,2-Dichloroethane-d4 76 114 97 <br /> • <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> G egory <br /> Project Manager <br /> Page 39 <br />