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CALIFORNIA LABORATORY SERVICES <br /> i <br /> Page 19 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 /> t <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 /> Batch C009589-EPA 5030 Water MS <br /> Blank(CO09589-BLKI) Prepared&Analyzed: 12/16/05 <br /> Di-isopropyl ether ND 0.56 µg/L <br /> Ethyltert-butyl ether ND 0.50 <br /> Methyl tert-butyl ether ND 0.50 " <br /> tert-Amyl methyl ether ND 0.50 " <br /> Ten-butyl alcohol ND 5.0 " <br /> 1,2-Dibromoethane(EDB) ND 0.50 <br /> 1,2-Dichloroethane ND 0.50 " <br /> Benzene ND 0.50 " <br /> Toluene ND 0.50 <br /> Ethylbenzene ND 0.50 " <br /> Qylenes(total) ND 1.0 " <br /> rrogate:Toluene-d8 9.19 " . 10.0 91.9 71-115 <br /> LCS(0009589-BSI) Prepared&Analyzed: 12/16/05 <br /> Methyl tert-butyl ether 21.4 0.50 µg/L 20.0 107 52-130 <br /> Surrogate:Toluene-d8 10.5 10.0 105 71-115 <br /> LCS Dup(CO09589-BSD]) Prepared&Analyzed: 12/16/05 <br /> Methyl tent-butyl ether 21.2 0.50 µg/l_ 20.0 106 52=130 0.939 30 <br /> Surrogate:Toluene-d8 10.1 10.0 102 71-115 <br /> Batch C009635-EPA 5030 Water MS <br /> Blank(CO09635-BLKI) Prepared&Analyzed: 12/19/05 <br /> Di-isopropyl ether ND 0.50 pg/L <br /> Ethyl tert-bury]ether ND 0.50 " <br /> Methyl tert-butyl ether ND 0.50 " <br /> ten-Amyl methyl ether ND 0.50 " <br /> Tert-butyl alcohol ND 5.0 <br /> Surrogate:Toluene-d8 9.16 10.0 91.6 71-115 <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova,CA 95742 www.californialab.com .916-638-7301 Fax: 916-6384514 <br />