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1 Sequoia 819 Striker Avenue,Suite 8 <br /> Sacramento,CA 95$34 <br /> Analytical <br /> r� (916)921-9600 <br /> Analytical FAX(916)9abs.co 0 <br /> wwwsequolalabs.[om <br /> i <br /> Delta Environmental Consultants•Cameron Park Project: ARCO 5469,Stockton,CA Sampled: 9/8100 <br /> 3330 Cameron Park Dr. Project Number: NIA Received: 9/8100 <br /> Cameron Park,CA 95682 Project Manager: Jay Johnson Reported: 9/27/00 <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 =0tes- <br /> MW-1 <br /> 5009110-01 Water <br /> Tert-butyl alcohol 0090199 9/21/00 9/21/00 200 ND ug/l <br /> Methyl tert-butyl ether 2.00 ND " <br /> Di-isopropyl ether 2.00 ND " <br /> Ethyl tert-butyl ether 2.00 ND " <br /> Tert-amyl methyl ether 2.00 ND " <br /> Ethanol 3000 ND " <br /> 1,2-Dichloroethane " 2.00 ND " <br /> Ethylene dibromide 2.00 ND " <br /> Surrogate: 1,2-DCA-d4 60.6-140 99.2 % <br /> MW-2 5009110-02 Water <br /> Tert-butyl alcohol 0090199 9/21/00 9/21/00 200 ND ug/l <br /> Methyl tert-butyl ether " " " 2.00 ND " <br /> AiLopropyl ether " 2.00 ND <br /> Cert-butyl ether 2.00 ND <br /> "Pert-amyl methyl ether 2.00 ND " <br /> Ethanol 3000 ND " <br /> 1,2-Dichloroethane 2.00 ND " <br /> Ethylene dibromide _ 2.00 ND " <br /> Surrogate: 1,2-DCA-d4 60.6-140 105 <br /> MW-3 5009110-03 Water <br /> Tert-butyl alcohol 0090199 9121/00 9/22/00 200 ND ug/l <br /> Methyl tert-butyl ether " " 2.00 2.58 " <br /> Di-isopropyl ether 2.00 ND " <br /> Ethyl tert-butyl ether 2.00 ND <br /> Tert-amyl methyl ether 2.00 ND " <br /> Ethanol " " 3000 ND " <br /> 1,2-Dichloroethane 2.00 ND " <br /> Ethylene dibromide _ 2,00 ND " <br /> Surrogate: 1,2-DCA-d4 60.0-140 103 % <br /> MW-4 S009110-04 Water <br /> Tert-butyl alcohol 0090I99 9/21/00 9/22/00 200 ND ug/1 <br /> Di-isopropyl ether 2.00 ND " <br /> Ethyl tert-butyl ether 2.00 ND " <br /> Tert-amyl methyl ether 2.00 ND " <br /> Ethanol 3000 ND " <br /> 1,2-Dichloroethane 2.00 ND " <br /> Ethylene dibromide 2.00 ND " <br /> �09a;te' DCA-d4 " " " 60cal-Sacramento *Refer to end of report for text of notes and definitions. <br /> Page 4 of 12 <br />