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Sequoia 680 Chesapeake Drive Redwood City CA 94963 (650)364-9600 FAX(650) 364-9233 <br /> 404 N Wlget Lane Walnut Creek CA 94598 (510)988-9600 FAX(510)98$�-9653 <br /> ' <br /> a- ) Analytical 019 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 /> Cambria - Client Proj ID Shell 2494 E Fremont Sampled 04/29/98 <br /> 270 Perkins Ave Sample Descrlpt S-2-50 Received 05/01/98 <br /> Sonoma, CA 95476 Matrix SOLID Extracted 05/04/98 <br /> Analysis Method EPA 8260 Analyzed 05/08/98 - <br /> Attention Joe Neely Lab Number 9805091-01 Reported 05118198 <br /> OC Batch Number MS050498MTBEEXA <br /> Instrument ID H6 <br /> Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> ug/kg ug/kg <br /> Ethanol 25000 N D <br /> t-Butanol 5000 N D <br /> Methyl t-Butyl Ether(MTBE) 100 N D <br /> Di-Isopropyl Ether (DIPE) 100 N D <br /> Ethyl t-Butyl Ether (ETRE) 100 N D <br /> t-Amyl Methyl Ether(TAME) 100 N D <br /> Surrogates Control Limits% % Recovery <br /> 1,2-Dichloroethane-d4 70 121 85 <br /> 1 <br /> Analytes reported as N Q er not present above the stated limit of detection <br /> SEQUOI LYT AL - ELAP #1210 <br /> P; PeVer <br /> Project Manager page 2 <br />