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Sequoia 680 Chesapeake Dnve Redwood GM 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 a 19 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921-0100 <br />� i <br /> Gettler Ryan/Geostrateg ees---- - Client Proj ID Unocal SS# 5886-- - —Sampled 03/25/98 <br /> 6747 Sierra Court Suite J Sample Descript MW-5D Received 03/25/98 - <br /> Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method EPA 8260 Analyzed 03/31/98 <br /> Attention Deanna Harding _ Lab Number 9803G82-07 Reported 04f08198 - <br /> QC Batch Number MS033198MTBE1=3A <br /> Instrument ID F3 <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 (DIPE) 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-Dichloroethane-d4 76 114 103 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA AN LYTICAL - ELAP #1210 <br /> ory <br /> Arjct Manager Page 17 <br /> m <br />