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Sequoia 680 Chesapeake Drivc Redwood City,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 Sinker Avenue,Suite 8 Sacramento, CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> r, Gettler Ryan/Geostrate les D - <br /> 9 Client Prod 1D Chevron 9-1848,Manteca Sampled 08/25/97 <br /> ,, 3164 Gold Camp Drive #240 Sample Descript 64-14 5 <br /> =t, Rancho Cordova, CA 95670 Matrix SOLID Received 08/30/97 <br /> Analysis Method EPA 8260 Extracted 09/05/97 ' <br /> 1'Attention Greg Gurss Lab Number 9708G33-08 Analyzed 09/07/97 <br /> _ <br /> QC Batch Number M50903978260EXA Reported 09J09197 <br /> Instrument ID F3 <br /> Oxygenate COmpolunds (EPA 8260) <br /> Analyte Detection Limit <br /> Sample Results <br /> ug/Kg ug/Kg <br /> Ethanol <br /> t-Butanol 25000N D <br /> 5000 <br /> Metyl t-Butyl Ether(MTBE) N D <br /> 100 <br /> Di-Isopropyl Ether(DIPE) N D <br /> 100 <br /> Ethyl t-Butyl Ether(ETRE) N D <br /> 100 <br /> t-Amyl Methyl Ether (TAME) 100 N D <br /> ND <br /> Surrogates Control Limits % fl <br /> /° <br /> 1,2-Dichloroethane-d4 70 Recovery <br /> 121 86 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA A ALYTICAL - ELAP #1210 <br /> sect Manager <br /> Page 32 <br />