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I <br /> w 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650)364 9233 <br /> Sequoia <br /> ` 404 N Wiget Lane Walnut Creek CA 94598 (915)988-9600 FAX(9Z5)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 /> I <br /> I _ <br /> Blaine Tech Services Client Prol ID Chevron 9-4275/980624-J1 Sampled 06/24/98 <br /> 1680 Rogers Avenue Sample Descript MW-5 Received 06/25/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method EPA 8260 Analyzed 07/01/98 <br /> Attention Fran Thle Lab Number 9806G68-05 Reported 07109f98 <br /> I _ _ <br /> QC Batch Number MS070198MTBEH6A <br /> Instrument ID H6 <br /> Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> Ethanol 1660 N D <br /> t-Butanol 333 N D <br /> Methyl t-Butyl Ether (MTBE) 67 110 <br /> Di-Isopropyl Ether (DIPS) 67 N D <br /> Ethyl t-Butyl Ether (ETBE) 67 N D <br /> t-Amyl Methyl Ether(TAME) 67 N D <br /> Surrogates Control Limits % % Recovery <br /> 1,2-Dlchloroethane-d4 76 114 104 <br /> I <br /> I <br /> I <br /> i <br /> i <br /> I <br /> I <br /> i <br /> I <br /> I <br /> I <br /> I <br /> Analytes reported as N D were not present above the stated lima of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> I i <br /> repo <br /> Pr ct Manager <br /> Page 9 <br />