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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> ATC Associates, Inc Client Proj ID Thiemann's Service 62605 0001 Sampled 07/08/98 <br /> 1260 Graphics Drive Sample Descript MW-4 Received 07/09/98 <br /> Modesto, CA 95351-1502 Matrix LIQUID <br /> Analysis Method EPA 82601 Analyzed 07/10/98 <br /> ,Attention Jeanne Homsey Lab Number 9807440-03 Reported 07f 16j98 <br /> QC Batch Number MS071098MT13EH6B - - <br /> Instrument ID H6 <br /> Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> Ethanal 500 N D <br /> t-Butanol 100 N D <br /> Methyl t-Butyl Ether(MTBE) 20 N D <br /> Di-Isopropyl Ether (DIPE) 20 N D <br /> Ethyl t-Butyl Ether (ETBE) 20 N D <br /> t-Amyl Methyl Ether (TAME) 20 N D <br /> Surrogates Control Limits % % Recovery <br /> 1,2-Dichloroethane-d4 76 114 95 <br />• <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Project Manager Page 5 <br />