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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 Straker 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 /> 1551 Industrial Road San Carlos CA 94070 41 1 1 (650)232-9600 FAX(650)232-9612 <br /> SECOR International Project ARCO 2133,Stockton,CA Sampled 3115/99 <br /> 9912 Business Park Drive,Ste 100 Project Number 7G600-079-04 Received 3116199 <br /> Sacramento,CA 95827 Project Manager Rusty 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 /> PL-6-3' (caa n Led) 5903219-14 59A <br /> Surrogate 12-DCA-d4 9030275 3/22199 3/24/99 600-140 952 % <br /> PL-7-3' S903219-15 Soil <br /> Tert-butyl alcohol 9030275 3122/99 3124199 100 ND mg/kg <br /> Methyl tert-butyl ether 0 100 ND <br /> D1-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 /> Surrogate 12-DCA-d4 600-140 964 % <br /> L-8-2.5' 5903219-16 5Qd <br /> Tert-butyl alcohol 9030275 3122/99 3/24/99 100 ND mg/kg <br /> hyl tert-butyl ether '1 " 0 100 ND <br /> sopropyl ether 0 100 ND <br /> yl tert-butyl ether 0 100 ND <br /> Tert-amyl methyl ether 0 100 ND " <br /> Ethanol 150 ND " <br /> Surrogate 12-DCA-d4 600-140 948 % <br /> V--1-3' S9,033219-17 SDA <br /> Tert-butyl alcohol 9030385 3126199 3126199 too ND mg/kg <br /> Methyl tert-butyl ether 0 100 988 " <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 /> Surrogate 1 2-DCA-d4 600-140 71 7 <br /> V-2-3' 5903219-18 $� <br /> Tert-butyl alcohol 9030385 3126/99 3/26199 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 /> Surrogate 1 2-DCA-d4 600-140 74 7 % <br /> V-3-3' S903219-19 S01l <br /> Tert-butyl alcohol 9030385 3/26/99 3126199 10 0 ND mg/kg <br /> ethyl tent-butyl ether 0 100 0 676 " <br /> uoia Analytical -Sacramento *Refer to end of report for text cf notes and definitions <br /> C' <br /> Sandra R an ,Client Services Representative Page 12 of 22 <br />