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680 Chesapeake Drive Redwood City CA 94063 (650)3649600 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 Su€te 8 Sacramento CA 95834 (916)921 9600 FAX(916)921 0100 <br /> 1455 cDowel <br /> Analytical 1551 Induust al(Road BlvdNor[h Ste D San 1CarlosumaCCA 94070-41 It (650)Z32-A 94954 707 9600 FAX(6050)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 3/16/99 <br /> Sacramento, CA 95827 Project Manager Rusty Benkosky Reported 4/l/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 ANotes- <br /> Pl,-2-3'(contiI)ued <br /> ) 5903219-10 sad <br /> Methyl tert-butyl ether 9030275 3/22/99 3/24/99 0 500 320 mg/kg D <br /> Di-isopropyl ether 0 500 ND D <br /> Ethyl tert-butyl ether 0 500 ND D <br /> Tert-amyl methyl ether 0 500 ND D <br /> Ethanol 750 ND D <br /> Surrogate 12-DCA-d4 600-140 94 4 % D <br /> EL-3-2.5' S903219-11 &A <br /> Tert-butyl alcohol 9030275 3/22/99 3/24/99 100 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 /> anol 150 ND " <br /> agate 1 2-DCA-d4 600-140 91 6 % <br /> PL-4-2.5' S903219-12 5�w <br /> Tert-butyl alcohol 9030275 3/22199 3/24/99 100 ND mg/kg <br /> Methyl tert-butyl ether 0 100 563 " <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 600-140 908 % <br /> PL-5-3' S903219-13 S" <br /> Tert-butyl alcohol 9030275 3/22/99 3/24/99 100 ND mg/kg <br /> Methyl ter -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 94 4 % <br /> P1,_6-31 S903219-14 51l <br /> `Cert-butyl alcohol 9030275 3/22/99 3/24/99 100 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 /> Ptk—1 150 ND " <br /> �SZquoia Analytical -Sacramento *Refer to end of report for text of noses and definitions <br /> c�5�' <br /> Sandra R Hanson, Client Services Representative Page l I of 22 <br />