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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 /> Analytical 819 Striker Avenue Scarce 8 Sacramento CA 95834 (916)921 9600 FAX( ) 0300 <br /> 1455 McDowell Blvd North Ste D Petaluma, CA 94954 (707)792-1865 <br /> 792-1865 FAX(707707 79) 792-0342 <br /> Blaine Tech Services Client Prol ID Chevron 9-8632/980810-T2 Sampled 08/10/98 <br /> 1680 Rogers Avenue Sample Descript MW-1 Received 08/13/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method EPA 8260 Analyzed 08/16/98 <br /> Attention Fran Thie Lab Number 9808853-01 Reported 08131198 <br /> QC Batch Number MS081698MTBEH6A <br /> Instrument ID H6 <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 75 <br /> Di-Isopropyl Ether (DIPE) 20 N D <br /> Ethyl t-Butyl Ether (ETBE) 20 N D <br /> t-Amyl Methyl Ether (TAME) 20 N D <br /> Surrogates Control Limits % % Recovery <br /> 1,2-Dichloroethane-d4 76 114 112 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> ///Zz 1`0 <br /> M ory <br /> P � anager <br /> Page 2 <br />