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680 Chesapeake Drive Redwood City CA 94063 •50) 364-9600 FAX(650) 364-9133 <br /> Sequoia 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(915)988-9673 <br /> ��► Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 10 <br /> acific Environmental Group V Client,Project iD Chevron 9-9840, Stockton, CA Sampled NIA <br /> 11315 Sunrise Gold Circle, Ste M Sample Descript Method Blank Received NIA <br /> Rancho Cordova, CA 95742 Analysis Method EPA 5030/8260 Extracted Oct 9, 1998 <br /> Attention Tim Anenson Lab Number BLK101298 Analyzed Oct 12, 1998 <br /> Reported Oct 13, 1998 <br /> OXYGENATES by GC/MS (EPA 8260) <br /> Analyte Reporting Limit Sample Results <br /> pglkg Ng/kg <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(ETRE) 100 N D <br /> Tertiary amyl methyl ether(TAME) 100 N D <br /> Surrogate Control Limits,% % Recovery <br /> 1,2-Dichloroethane-d4 50-150 95 <br /> s <br /> Analytes reported as N D were not detected at or above the reporting limit <br /> SEQU IA ANALYTICAL, ELAP#1271 <br /> � 1c (C-/ <br /> da C Schneider <br /> roject Manager/Sacramento Laboratory <br /> S809378 PES <2> <br /> r�i <br />