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= CALIFORNIA LABORATORY SERVICES <br /> i <br /> Page 20 of 21 12/23/05 12:58 <br /> APEX Envirotech Inc.-Gold River Project: Moore Petroleum <br /> 11244 Pyrites Way Project Number: ERA02.004-QM CLS Work Order#:COL0454 <br /> Gold River,CA 95670 Project Manager: Rich Johnson <br /> Volatile Organic Compounds by EPA Method 8260B- Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> i <br /> Batch C009635-EPA 5030 Water MS <br /> t LCS(CO09635-BSI) Prepared&Analyzed: 12/19/05 <br /> j Methyl tert-butyl ether 20.3 0.50 pg/L 20.0 102 52-130 <br /> Surrogate:Toluene-& 10,3 10.0 103 72-125 <br />+ LCS Dup(CO09635-BSDI) Prepared&Analyzed: 12/19/05 <br /> Methyl tert-butyl ether 22.2 0.50 pglL 20.0 111 52-130 8.94 30 <br /> Surrogate:Toluene-& 10.1 10.0 101 72-125 <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 <br />