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{ <br /> CALIFORNIA LABORATORY SERVICES <br /> Page 19 of 20 <br /> 11110105 10:03 <br /> APEX Envirotech Inc.-Gold River Project: Moore Petroleum <br /> 11244 Pyrites Way CLS Work Order#:COK0058 <br /> Y Y Project Number: ERA02.Oo4 <br /> Gold River,CA 95670 Project Manager: Rich Johnson COC#:56131 <br /> i <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> f Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch C008393-EPA 5030 Soil MS <br /> LCS(CO08393-BS1) Prepared&Analyzed: 11/03/05 <br /> Methyl tert-butyl ether 46.7 5.0 µg/kg 50.0 93.4 60-140 <br /> Surrogate:Toluene-d8 49.0 50.0 98.0 60-140 <br /> ` LCS Dup(CO08393-ESDI) Prepared&Analyzed: 11/03/05 <br /> Methyl tert-butyl ether 52.1 5.0 µglkg 50.0 104 - 60-140 10.9 30 <br /> h Surrogate:Toluene-d8 48.7 50.0 97.4 60-140 <br /> Matrix Spike(CO08393-MSI) Source:COK0043-10 Prepared&Analyzed: 11/03/05 <br /> t <br /> Methyl tert-butyl ether 54.6 5.0 µg/kg 50.0 ND 109 60-140 <br /> Surrogate:Toluene-d8 49.4 50.0 98.8 60-140 <br /> E \'17atrix Spike Dup(C008393-MSDI) Source:COK0043-10 Prepared&Analyzed; 11/03/05 <br /> Methyl tcrt-butyl ether 53.4 5.0 µglkg 50.4 N1] 107 60-]40 2.22 3D <br /> t <br /> Surrogate:Toluene-d8 48.9 50.0 97.8 60-140 <br /> i <br /> i <br /> f ' <br /> 1 <br /> E <br /> if <br /> 1 <br /> i <br /> i <br /> F <br /> l <br /> F <br />+4 <br /> 1 _ <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 />