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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 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Sinker Avenue,Stutc 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> 10 <br /> Upgradient Environmental Consultants Project Conrady Sampled 7/6198 <br /> 336 Augusta Court Project Number N/A Received 717198 <br /> Valley SP,CA 95252 Project Manager Vic Cherven Reported 7/23198 <br /> Volatile Organic Compounds by EPA Method 8260A <br /> Sequoia Analytical-Sacramento <br /> Batch Date Date Surrogate Reporting <br /> lAnalvtc Number Prepared Analyzed Limits Limit Result Units Notes* <br /> MW-1 5807053,-aD <br /> Water <br /> Tert-butyl alcohol 8070311 7/16/98 7/16198 200 ND ug/l <br /> Methyl tert-butyl ether 200 ND " <br /> Di-isopropyl ether 200 ND " <br /> Ethyl tert-butyl ether 200 ND " <br /> Tert-amyl methyl ether 200 ND " <br /> Surrogate 1 1-DCA-d4 600-140 110 % <br /> MW-2 5807053AI Water <br /> Tert-butyl alcohol 8070312 7117198 7117198 200 ND ug/l <br /> Methyl tert-butyl ether 200 ND " <br /> Di-isopropyl ether 200 ND " <br /> yl tert-butyl ether 200 ND " <br /> -amyl methyl ether 200 ND " <br /> urrogate 12-DCA-d4 600-140 124 % <br /> MW-3 S807053-02 War tez <br /> Tert-butyl alcohol 8070311 7/16198 7/16198 200 ND ug/l <br /> Methyl tert-butyl ether 200 ND " <br /> Di-isopropyl ether 200 ND " <br /> Ethyl tert-butyl ether 200 ND " <br /> Tert-amyl methyl ether 200 ND " <br /> Surrogate 1,2-DCA-d4 " 600-140 116 % <br /> MWA SR 70� 53-03 Water <br /> Tert-butyl alcohol 8070311 7/16/98 7/16/98 200 ND ug/l <br /> Methyl tert-butyl ether2 OD ND .1 <br /> Di-isopropyl ether 200 ND " <br /> Ethyl tert-butyl ether 200 ND " <br /> Tert-amyl methyl ether 200 ND " <br /> Surrogate 12-DCA-d4 " 600-140 108 % <br /> MW-5 5807053-04 Water <br /> Tert-butyl alcohol 8070311 7/16198 7/16198 200 ND ug/1 <br /> Methyl tert-butyl ether 200 ND " <br /> Di-isopropyl ether 200 ND " <br /> Ethyl tert-butyl ether „ 200 ND,Nq " <br /> Aft <br /> uoia Analytical-Sacrame to <br /> *Refer to end of report for text of nates and definitions <br /> coda C Schnetd r,Laboratory Director ,,ppqq Page 4 of 11 <br /> tSd' <br />