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Sequoia 680 Chesapeake Drive Redwood CiM CA 94063 (650) 364-9600 FAX(650)364.9233 <br /> (1) 404 N.Wiget Lane Walnut Creek,CA 94598 (510) 988-9&)0 FAX(510)988-%73 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento, CA 95834 (916) 921.9600 FAX(916)921-0100 <br /> EMCON Client Protect ID. Arco 2186, Stockton, CA Sampled. Feb 17, 1998 <br /> 1433 N. Market Blvd. Sample Descrip: Water, MW-4 (62.8) Received. Feb 18, 1998:;: <br /> Sacramento, CA 95834 Analysis Method: EPA 5030/8260 Analyzed: Feb 28, 19981€ <br /> Attention: Dave Foley Lab Number: 802-0469 Reported: Mar 4, 1998 s <br /> OXYGENATES by GC/MS (EPA 8260) <br /> Analyte Reporting Limit Sample Results <br /> ug/L Ng/L <br /> Tertiarybutanol.......................................................... 100 ..................................... 180 <br /> Methyl tertiary butyl ether (MTBE)............................. 2.0 ..................................... 25 <br /> Di-isopropyl ether (D1PE).................................................. 2.0 ..................................... N.D. <br /> Ethyl tertiary butyl ether (ETBE)....................................... 2.0 .............-....................... N.D. <br /> Tertiary amyl methyl ether(TAME)................................... 2.0 ..................................... N.D. <br /> Analytes reported as N.D.were not detected at or above the reporting limit. <br /> SEQUOIA ANALYTICAL, ELAP#1210 <br /> Ronald W. Bobel <br /> Project Manager/Sacramento Laboratory <br /> 8020465.EMC <3> <br />