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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 /> 455 865 FAX(707)792-03Z <br /> Analytical t 551 Indbowa 11Rooadd North Ste D San ICarlosPetaumaCCA 94070 4111 (6050)232-A 94954 (77) 9600 FAX (650)232-9642 <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 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 /> --1--3' 5993219-01 Skil <br /> Tert-butyl alcohol 9030275 3/22/99 3124199 200 ND mg/kg D <br /> Methyl tert-butyl ether 0200 13 1 D <br /> Di-isopropyl ether 0200 ND D <br /> Ethyl tert-butyl ether 0200 ND D <br /> Tert-amyl methyl ether 0200 ND D <br /> Ethanol 300 ND D <br /> Surrogate 1 2-DCA-d4 600-140 944 % D <br /> D-2-2.5' 5903219-02 SAL! <br /> Tert-butyl alcohol 9030275 3/22199 3/24/99 200 ND mg/kg D <br /> Methyl tert-butyl ether 0200 156 D <br /> D1-isopropyl ether 0200 ND D <br /> Ethyl tert-butyl ether 0200 ND D <br /> -amyl methyl ether 0200 ND D <br /> no[ 300 ND D <br /> arrogate 1 2-DCA-d4 600-140 904 / D <br /> D-3-3' 5903219-03 SAW <br /> Tert-butyl alcohol 9030275 3/22199 3/24/99 100 ND mg/kg <br /> Methyl tert-butyl ether 0 100 ND " <br /> Dt-isopropyl ether 0 100 ND <br /> Ethyl tert-butyl ether 0 100 ND " <br /> Tent-amyl methyl ether 0 100 ND " <br /> Ethanol 150 ND " <br /> Surrogate 1 2-DCA-d4 600-140 920 <br /> D-4-2.5' 5903219-04 Sg11 <br /> Tert-butyl alcohol 9030275 3/22/99 3/24/99 10 0 ND mg/kg <br /> Methyl tert-butyl ether 0 100 ND " <br /> Di-isopropyl ether 0 too 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 600-140 928 <br /> 0-5-2.51 5903219-05 5911 <br /> Tert-butyl alcohol 9030275 3/22/99 3/24/99 100 ND mg/kg <br /> Methyl tert-butyl ether 0 100 447 <br /> Di-isopropyl ether 0 100 ND <br /> Ethyl tert-butyl ether 0 100 ND <br /> -amyl methyl ether 0 100 ND " <br /> vola Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> Sandra R Hanson,Client Services Representative Page 9 of 22 <br />