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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX(650) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (925)988 %00 FAX(925)988-9673 <br /> 819 Striker Avenue Susie 8 Sacramento CA 95834 (916)921 9600 FAX(916)921 0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma. CA 94954 (707)792 1865 FAX(707) 792-0342 <br /> Blaine Tech Services Client Prol ID Chevron 9-1848/980810-T3 Sampled 08/10/98 <br /> 1680 Rogers Avenue Sample Descript C-2 Received 08/13/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysts Method EPA 8260 Analyzed 08/16/98 <br /> Attention Fran Thie Lab Number 9808758-02 Reported 08J25198 <br /> QC Batch Number MS081698MTBEH6A <br /> Instrument ID H6A <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 68 <br /> DI-Isopropyl Ether (DIPE) 20 N D <br /> Ethyl t-Butyl Ether (ETRE) 20 N D <br /> t-Amyl Methyl Ether (TAME) 20 N D <br /> Surrogates Control Limits% % Recovery <br /> 1 2-Dichloroethane-d4 76 114 104 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> N <br /> Pr sect anager Page 3 <br />