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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)988-9600 FAX(925)988-9673 <br /> ` <br /> 01%0- Analytical 819 Straker Avenue Suite B Sacramento CA 95834 (916)921-9500 FAX(916)921 0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707) 792-1865 FAX(707)792-0342 <br /> Blaine Tech Services Client Prol ID Chevron 9-8632/98081 0-T2 Sampled 08/10/98 <br /> 1680 Rogers Avenue Sample Descrlpt MW-2 Received 08/13/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method EPA 8260 Analyzed 08/21/98 <br /> Attention Fran Thle Lab Number 9808853-02 Reported 08./31198 <br /> QC Batch Number MS082098MTSEH6A <br /> Instrument ID H6 <br /> Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L. <br /> Ethanol 1000 N D <br /> t-Butanol 200 N D <br /> Methyl t-Butyl Ether (MTBE) 40 240 <br /> DI-Isopropyl Ether (DIPS) 40 N D <br /> Ethyl t-Butyl Ether (ETRE) 40 N D <br /> t-Amyl Methyl Ether (TAME) 4 0 N D <br /> Surrogates Control Limits % % Recovery <br /> 1,2-Dlchloroethane-d4 76 114 111 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> gory <br /> P t Manager Page 5 <br />