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' 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> ` Sequoia 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX{9251 988-9673 <br /> 819 Sinker Avenue Suite 8 Sacramento CA 95834 (916)921 9600 FAX(916)92 1-0 100 <br /> 455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792 0342 <br /> Analytical 11551 Industrial Road San Carlos CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> SECOR International Protect TOSCO 8671,Stockton,CA Sampled 2/15/99 <br /> 9912 Business Park Drive,Ste 100 Project Number 7G888-010-01,Task# 12 01 Received 2/16/99 <br /> Sacramento,CA 95827 Project Manager RustX Benkosky Reported 3/2/99 <br /> Volatile Organic Compounds by EPA Method 8260A <br /> Sequoia Analytical-Sacramento <br /> Batch Date Date Surrogate Reporting <br /> Analyte Number Prepared Analyzed Limits Limit Result Units Notes]- <br /> MW-1 S902230-01 Water <br /> Tert-butyl alcohol 9020207 2/18/88 2/18/99 200 ND ug/l <br /> Methyl tert-butyl ether 200 306 " <br /> Di-isopropyl ether 2 00 ND " <br /> Ethyl tert-butyl ether 2 00 ND " <br /> Tert-amyl methyl ether 2 00 ND " <br /> Surrogate 1,2-DCA-d4 600-140 104 % <br /> MW-2 5902230-02 Water <br /> Tert-butyl alcohol 9020207 2/18/88 2/18/99 200 ND ug/1 <br /> Methyl tert-butyl ether 200 ND " <br /> Di-isopropyl ether 200 ND " <br /> Ethyl tert-butyl ether 200 ND " <br /> ert-amyl methyl ether 200 ND <br /> rrogate 12-DCA-d4 600-140 108 % <br /> MW-3 5902230-03 yya ter <br /> Tert-butyl alcohol 9020207 2/18/88 2/18/99 200 ND ug/l <br /> Methyl tert-butyl ether 200 ND " <br /> Di-isopropyl ether 200 ND " <br /> Ethyl tent-butyl ether 200 ND " <br /> Tert-amyl methyl ether 200 ND " <br /> Surrogate 1 2-DCA-d4 600-140 108 % <br /> MWA 5902230-04 Water <br /> Tert-butyl alcohol 9020207 2/18/88 2/18/99 200 ND ug/I <br /> Methyl ter -butyl ether 200 748 " <br /> Di-isopropyl ether 200 ND " <br /> Ethyl tert-butyl ether 2 00 ND " <br /> Tert-amyl methyl ether 2 00 ND " <br /> Surrogate 1,1-DCA-d4 600-140 105 % <br /> 11Wquoia Analytical-Sacramento *Refer to end of report for test of notes and definitions <br /> �A <br /> 2L1G <br /> Sandra R Hanson,Client Services Representative Page 3 of 6 <br />