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.1 <br /> ID 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 %00 FAX(510) 988 9673 <br /> r <br /> 14W Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> IRMCON Client Project ID ARCS 2168, Stockton, CA Sampled Nov 17, 1997 <br /> 1433 N Market Blvd Sample Descnpt Water, MW-4 (59) Received Nov 18, 1997 <br /> Sacramento, CA 95834 Analysis Method EPA 5030/8260 Analyzed Nov 26, 1997 <br /> Attention Deanna Santos Lab Number 711-0996 Reported Dec 4, 1997 <br /> OXYGENATES by GC/MS (EPA 8260) <br /> Analyte Reporting Limit Sample Results <br /> Ng/L Ng/L <br /> Tertiary butanol 1 700 N D <br /> Methyl tertiary butyl ether (MTBE) 33 58 <br /> Di-isopropyl ether (DIPE) 33 N D <br /> Ethyl tertiary butyl ether (ETBE) 33 N D <br /> Tertiary amyl methyl ether(TAME) 33 N D <br /> This page amended December 18, 1997 <br /> Anaiytes reported as N D were not detected at or above the reporting limit Because matrix effects and/or other factors <br /> required additional sample dilution reporting limas for this sample have been raised <br /> SEQU IA ANALYTI L, ELAP #1210 <br /> in <br /> da C Schneider <br /> Project Manager/Sacramento Laboratory <br /> 7110993 EMC <5> <br />