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i <br /> Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364 9600 FAX(650)364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510)988-9600 FAX(510)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 /> Blaine Tech Services Client Prol ID Chevron 9-1848/980520-1-2 Sampled 05/20/98 <br /> 1680 Rogers Avenue Sample Descript C-2 Received 05/22/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method EPA 8260 Analyzed 05/27/98 <br /> Attention Fran Thie Lab Number 9805E65-02 Reported 06JO4198 <br /> OC Batch Number MS052698MTBEH6B <br /> Instrument ID H6 <br /> Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> Ethanol 715 N D <br /> t-Butanol 143 200 <br /> Methyl t-Butyl Ether (MTBE) 2.9 190 <br /> Di-Isopropyl Ether (DIPE) 29 N D <br /> Ethyl t-Butyl Ether (ETRE) 29 N D <br /> t-Amyl Methyl Ether (TAME) 29 N D <br /> Surrogates Control Limits% % Recovery <br /> 1,2-Dichloroethane-d4 76 114 106 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANA YTICAL - ELAP 41210 <br /> */Cf nager <br /> Page 3 <br />