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Sequoia 680 Chesapeake Dnvc Redwood C'M 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 B19 Stnker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> Enviros Client Pro) iD Shell 6131 Pacific, Stockton Sampled 09/16/97 <br /> 13 270 Perkins Ave Sample Descrlpt MW-5-55 5' Received 09/19/97 <br /> Sonoma, CA 95476 Matrix SOLID Extracted 09/29/97 L <br /> M Analysis Method EPA 8250 Analyzed 09/29/97 1 <br /> — Attention J-Gaarder Lab Number -9709009-06–. __ �--Reported _10/0397 _ <br /> CC 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-Isopropyl Ether DIPS) 100 N D <br /> Ethyl t-Butyl Ether (ETBE) 100 N D <br /> t-Amyl Methyl Ether(TAME) 100 N D <br /> Surrogates Control Limits % % Recovery <br /> 1,2-Dichloroethane-d4 70 121 91 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> -74 <br /> Mike re ry V • <br /> Project Manager Page 17 <br /> 9D <br />