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CALIFORNIA LABORATORY SERVICES <br /> " <br /> 06/15/05 12:06 <br /> APEX Envirotech Inc.-Gold River Project: Moore Petroleum <br /> 1 11244 Pyrites Way Project Number: ERA02.004-QM CLS Work Order#:COF0293 <br /> Gold River,CA 95670 Project Manager: Rich Johnson <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Reporting Spike Source y %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch C004268-EPA 5030 Water MS <br /> Blank(CO04268-BLK1) Prepared&Analyzed:06/08/05 <br /> t Di-isopropyl ether ND 0.50 µg/L <br /> Ethyl Cert-butyl ether ND 0,50 " <br /> Methyl tert-butyl ether ND 0.50 ^ <br /> cert-Amyl methyl ether ND 0.50 " <br /> Tert-butyl alcohol ND 5.0 " <br /> Surrogate:Toluene-d8, 9.09 10.0 90.9 72-115 <br /> LCS(CO04268-BS1) Prepared&Analyzed:06/08/05 <br /> Methyl tert-butyl ether 18,8 0.50 µg/L 20.0 94.0 52-130 <br /> Surrogale:Toluene-d8 11.1 10.0 111 72-125 ) <br /> LCS Dup(0004268-BSDI) Prepared&Analyzed:06/08/05 <br /> Methy[tert-butyl ether 19.5 0.50 pg/L 20.0 97.5 52-130 3.66 30 <br /> Surrogale:Toluene-d8 10.4 10.0 104 72-125 <br /> E <br /> Batch C004318--EPA 5030 Water M5 <br /> Blank(CO04318-BLKI) Prepared&Analyzed:06/09/05 <br /> Di-isopropyl ether ND 0.50 pg/L <br /> II Ethyl tert-butyl ether ND 0.50 " <br /> Methyl Cert-butyl ether ND 0.50 " <br /> Cert-Amy[methyl ether„ ND 0.50 " <br /> Tert-butyl alcohol ND 5.0 " <br /> Surrogate:Toluene-d8 8.87 10.0 88.7 71-125 <br /> LCS(CO04318-BSI) Prepared&Analyzed:06/09/05 <br /> Methyl tert-butyl ether 19.5 0,50 pg/L 20.0 97.5 52-130 <br /> Surrogate:Toluene-d8 10.9 10.0 109 72.125 <br /> t <br /> CA DOHS ELAP Accred itation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova, CA 95742 www.californialab.com 916-638-7301 Fax: 916-638-4510 <br />