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4 - ^ <br /> CALIFORNIA LABORATORY SERVICES <br /> 08/24/04 17:10 <br /> APEX Envirotech Inc.-Gold River Project: Moore Petroleum <br /> 11244 Pyrites Way Project Number: ERA02.004 CLS Work Order#:CNH0705 <br /> Gold River,CA 95670 Project Manager: Rich Johnson COC#: <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Reporting Spike Source %RITC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch CN06509-EPA 5030 Water MS <br /> .Blank(CN06509-BLK1) Prepared&Analyzed:08/23/04 <br /> Di-isopropyl ether ND 0.50 µglL <br /> Ethyl tert-butyl ether ND 0.50 „ <br /> Methyl tert-butyl ether ND 0.50 " <br /> tert-Amyl methyl ether ND 0.50 <br /> Tert-butyl alcohol ND 5.0 " <br /> Surrogale:Toluene-d8 9.53 10.0 95.3 71-125 <br /> LCS(CN06509-BS1) .. Prepared&Analyzed: 08/23/04 <br /> Methyl tert-butyl ether 20.7 0.50 µ6L 20.0 104 52-130 <br /> Surrogate:Toluene r18 10.5 10.0 105 72-115 <br /> LCS Dup(CN06509-BSDI) Prepared&Analyzed:08/23/04 <br /> Methyl tert-butyl ether 22.1 0.50 µ61L 20.0 110 52-130 6.54 30 <br /> Surrogate:Toluene-d8 10.3 10.0 103 71-115 <br /> i <br /> I <br /> E <br /> I� <br /> i <br /> I <br /> I <br /> I <br /> i <br /> i <br /> I <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova, CA 95742 www.californialab.com 916-638-7301 Fax: 916-638-4510 t <br />