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i4 Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 4D 404 N W9get Lane Walnut Creek,CA 94598 (510) 988-9600 FAX(510)988 9673 <br /> Iwo Analytical 819 Stnker Avenue,Suite 8 Sacramento, CA 95834 (9t6) 921-9600 FAX(916)921 0100 <br /> GettleiRyanGeostrategles -- - Client Proj ID µ Chevron 9-6171, Stockton -Sampled 03/01/98 <br /> 6747 Sierra Court Suite J Sample Descript MW-3 Received 03/02/98 <br /> Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method EPA 8260 Analyzed 03/04/98 <br /> Attention Deanna Harding Lab Number 9803027-02 Reported 03112198 <br /> QC Batch Number MS030298MTBEF3A _ - <br /> Instrument ID E3 <br /> Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> Ethanol 500 N D <br /> t-Butanol 100 N D <br /> Methyl t-Butyl Ether (MTBE) 20 N D <br /> Di-Isopropyl Ether DIPS) 20 N D <br /> Ethyl t-Butyl Ether(ETBE) 20 N D <br /> t-Amyl Methyl Ether (TAME) 20 N D <br /> Surrogates Control Limits % % Recovery <br /> 1,2-Dlchloroethane-d4 76 114 106 <br /> i <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> regory <br /> Project Manager Page 2 <br /> a� <br />