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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Sinker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Upgradlent Environmental Consultants Project Conrady Sampled 4124198 <br /> 336 Augusta Court Project Number N/A Received 4124198 <br /> Valley Sp,CA 95252 Project Manager Vic Cherven Reported 5113198 <br /> Volatile Organic Compounds by EPA Method 8260A <br /> Sequoia Analytical-Sacramento <br /> N <br /> Batch Date Date Specific Reporting <br /> lAnalyte Number Prepared Analyzed Method Limit Result Units Notes* <br /> lYLw_I SM222-00 Water <br /> Tert-butyl alcohol 8050064 4130198 4130198 EPA 8260A 200 ND ug/1 <br /> Methyl tert-butyl ether EPA 8260A 200 ND " <br /> Di-isopropyl ether EPA 8260A 2 00 ND " <br /> Ethyl tert-butyl ether EPA 8260A 2 00 ND " <br /> Tert-amyl methyl ether EPA 8260A 200 ND " <br /> • MW-2 5804222-01 Water <br /> Tert-butyl alcohol 8050077 515198 5/5/98 EPA 8260A 1000 ND ug/l <br /> Methyl tert-butyl ether EPA 8260A 10 0 ND " <br /> Di-isopropyl ether EPA 8260A 10 0 ND " <br /> Ethyl tert-butyl ether EPA 8260A 10 0 ND " <br /> Ort-amyl methyl ether EPA 8260A 10 0 ND " <br /> MW-3 5804222-02 Water <br /> Tert-butyl alcohol 8050064 4130/98 4130198 EPA 8260A 200 ND ug/l <br /> Methyl tert-butyl ether EPA 8260A 200 ND " <br /> Di-isopropyl ether EPA 8260A 200 ND " <br /> * Ethyl tert-butyl ether EPA 8260A 200 ND " <br /> Tert-amyl methyl ether EPA 8260A 200 ND " <br /> MWA 5804222-03 Water <br /> Tert-butyl alcohol 8050064 4/30/98 4/30/98 EPA 8260A 200 ND ug/l <br /> Methyl tert-butyl ether EPA 8260A 200 ND " <br /> DI-isopropyl ether EPA 8260A 200 ND " <br /> Ethyl tent-butyl ether EPA 8260A 200 ND " <br /> Tert-amyl methyl ether EPA 8260A 200 ND " <br /> MW-5 5804222-04 Water <br /> Tert-butyl alcohol 8050064 4130/98 4130198 EPA 8260A 200 ND ug/l <br /> Methyl tert-butyl ether EPA 8260A 200 ND " <br /> Di-isopropyl ether EPA 8260A 200 ND " <br /> Ethyl tert-butyl ether EPA 8260A 2 00 ND " <br /> Tert-amyl methyl ether EPA 8260A 200 ND " <br /> Sequoia A ical-Sacramento *Refer to end of report for text of notes and definitions <br /> mda C Schneider,Laboratory Director Page 4 of 10 <br />