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Sequoia 680 Chesapeake Drive Rrdwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 4D 404 N Wiget Lane Walnut Creek CA 94598 (9251 988-9600 FAX(925)988 9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)92 1-0 100 <br /> I%ff 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 /> {0r <br /> SECOR International Pr41ect ARCO 2133,Stockton,CA Sampled 3/18/99 <br /> 9912 Business Park Drive, Ste 100 Project Number 7G600-019-04 Received 3/18/99 <br /> Sacramento,CA 95827 Project Manager Rusty Benkosky Reported 411/99 <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 /> T-3W-15' S903255-01 SQA <br /> Tert-butyl alcohol 9030385 3/26/99 3/29/99 100 ND mg/kg <br /> Methyl tent-butyl ether 0 100 0 125 " <br /> Di-isopropyl ether 0 100 ND " <br /> Ethyl tert-buty)ether 0 100 ND " <br /> Tert-amyl methyl ether 0 100 ND " <br /> Ethanol 150 ND " <br /> Surrogate 12-DCA-d4 600-140 750 <br /> T-3E-15' S203255-02 SQd <br /> Tert-butyl alcohol 9030385 3/26199 3129/99 100 ND mg/kg <br /> Methyl tert-butyl ether 0 100 0 156 " <br /> Di-isopropyl ether 0 100 ND " <br /> Ethyl tert-butyl ether 0 100 ND <br /> -amyl methyl ether 0 100 ND " <br /> no] 150 ND " <br /> arrogate 12-DCA-d4 600-140 690 <br /> -S' 5903255-03 SAW <br /> Tert-butyl alcohol 9030385 3/26/99 3/29/99 100 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 /> Surrogate 12-DCA-d4 600-140 70 7 <br /> PL-9-2.5' 5903255-04 SDA <br /> Tert-butyl alcohol 9030385 3/26/99 3/29/99 100 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 /> Surrogate 12-DCA-d4 600-140 733 <br /> Pl,-I - 5' 5903255-05 SD] <br /> Tert-butyl alcohol 9030387 3/29/99 3130/99 200 ND mg/kg D <br /> Methyl tert-butyl ether 2 00 124 D <br /> Di-isopropyl ether 200 ND D <br /> Ethyl tert-butyl ether 200 ND D <br /> t-amyl methyl ether 200 ND D <br /> quoia Analytical Sacramento *Refer to end of report for text of notes and definitions <br /> Sandra R Hanson,Client Services Representative Page 5 of 1 I <br />