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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(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> uma CA 94954 (707)792 1865 FAX(707)792-032 <br /> Analytical ',551 Induustrialli[�d Blvd North Ste D San Carlos CA 94070 41 11 (650)232 9600 FAX(656)232-9642 <br /> l� <br /> SECOR international Project ARCO 2133, Stockton,CA Sampled 3/15/99 <br /> 9912 Business Park Drive,Ste 100 Project Number 7G600-079-04 Received 3/16/99 <br /> Sacramento, CA 95827 Project Manager RustX Benkosky Reported 4/1/99 <br /> Volatile Oxygenate 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 /> Y-3-3' 5903219-19 SQd <br /> Di-isopropyl ether 9030385 3/26/99 3/26/99 0 100 ND mg/kg <br /> Ethyl tert-butyl ether 0 100 ND <br /> Tert-amyl methyl ether 0 100 ND " <br /> Ethanol 150 ND " <br /> Surrogate 1 2-DCA-d4 600-140 743 % <br /> V-4-2.5' 5903219-20 5911 <br /> Tert-butyl alcohol 9030385 3/26/99 3/26/99 100 ND mg/kg <br /> Methyl tert-butyl ether 0 100 ND " <br /> Di-isopropyi ether 0 100 ND <br /> Ethyl cert-butyl ether 0 100 ND <br /> Tert-amyl methyl ether 0 100 ND " <br /> Ethanol 150 ND " <br /> Crogate ! 2-DCA-d4 600-140 763 % <br /> ' S903219-21 6411 <br /> Tert-butyl alcohol 9030385 3/26/99 3/26/99 t 0 0 ND mg/kg <br /> Methyl tert-butyl ether 0 100 ND <br /> Di-isopropyl ether 0 100 ND " <br /> Ethyl tert-butyl ether 0 100 ND " <br /> Tert-amyl methyl ether 0 10 ND " <br /> Ethanol 150 ND " <br /> Surrogate 12-DCA-d4 600-140 81 7 % <br /> V-6-4, 5903219-22 $411 <br /> Tert-butyl alcohol 9030385 3/26/99 3/26/99 too ND mg/kg <br /> Methyl tert-butyl ether 0 i 00 ND " <br /> Di-isopropyl ether 0 100 ND " <br /> Ethyl tert-butyl ether 0 too ND <br /> Tert-amyl methyl ether 0 100 ND <br /> Ethanol ISO ND " <br /> Surrogate 12-DCA-d4 or 600-140 773 % <br /> V-7-4' S903219-23 SAW <br /> Tert-butyl alcohol 9030385 3/26/99 3/26/99 100 ND mg/kg <br /> Methyl tert-butyl ether 0 100 ND " <br /> Di-Isopropyl ether 0 100 ND " <br /> Ethyl tert-butyl ether 0 100 ND " <br /> Tert-amyl methyl ether 0 100 ND " <br /> Ethanol 150 ND <br /> S-urro-vale 1 2-DCA-d4 600-140 803 % <br /> uoia Analytical- Sacramento *Refer to end of report for text of motes and definitions <br /> Sandra R Hanson,Client Services Representative Page 13 of 22 <br />