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• 680 Chesapeake Drive Redwood City CA 94063 (50) 364-9600 FAX(650)364-9233 <br /> Sequoia 404N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> � F Analytical <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> qcific Environmental Group r Client Project ID Chevron 9-9840, Stockton, CA Sampled NIA <br /> 1315 Sunrise Gold Circle, Ste M Sample Descrlpt Method Blank Received NIA <br /> Rancho Cordova, CA 95742 Analysis Method EPA 5030/8260 Extracted Oct 6, 1998 <br /> Attention Tim Anenson Lab Number BILK 1017198 Analyzed Oct 7, 1998 <br /> Reported Oct 12, 1998 <br /> OXYGENATES by GCIMS (EPA 8260) <br /> Analyte Reporting Limit Sample Results <br /> pg/kg Nglkg <br /> Ethanol 25,000 N D <br /> Tertiary butanol 5,000 N D <br /> Methyl tertiary butyl ether(MTBE) 100 N D <br /> DI-isopropyl ether(DIPE) 100 N D <br /> Ethyl tertiary butyl ether (ETBE) 100 N D <br /> Tertiary amyl methyl ether(TAME) 100 N D <br /> Surrogate Control Limits, % % Recovery <br /> 1,2-Dichloroethane-d4 50-150 94 <br /> 0 <br /> Analytes reported as N D were not detected at or above the reporting limit <br /> SEQUOIA ANALYTICAL, E #1 1 <br /> i/ 1v a�- <br /> Wrojenda C Schneider <br /> ct <br /> Manager/Sacramento Laboratory <br /> 5849342 PES e6> <br />