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Sequoia680 Chesapeake Drive Redwood City,CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 N Wiget Lane Walnut Geek,CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> tial' Analytical 819 Striker Avenue,Suite 8 Sacramento, CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> 1= Enviros - Client Prol ID Shell 6131 Pacific, Stockton iSampled 09/16/97 <br /> 11270 Perkins Ave Sample Descript MW-7-40' Received 09/19/97 0 <br /> 2 Sonoma, CA 95476 Matrix SOLID Extracted 09/29/97 <br /> Analysis Method EPA 6260 Analyzed 09/30/97 <br /> Attention J Gaarder Lab Number 9709009-13 Reported 10/03/97--� <br /> - _ µ- - ----- -------- - _ - - - - --- <br /> OC Batch Number MS092997MTBEEXA -- <br /> Instrument ID F2 <br /> Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> ug/Kg ug/Kg <br /> Ethanol 50000 N D <br /> t-Butanol 5000 N D <br /> Metyl t-Butyl Ether(MTBE) 100 N D <br /> Di-Isopropyf Ether DIPS 100 N D <br /> Ethyl t-Butyl Ether ETB ) 100 N D <br /> t-Amyl Methyl Ether(TAME) 100 N D <br /> Surrogates Control Limits% % Recovery <br /> 1,2-Dichloroethane-d4 70 121 99 <br /> >3 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> �: <br /> Mike ory <br /> Project Manager Page 38 <br />