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CALIFORNIA LABORATORY SERVICES <br /> E <br /> 08/29/03 16:19 <br /> I`- APEX Envirotech Inc.-Gold River Project: Moore Petroleum CLS Work Order#:CMH 0711 <br /> 11244 Pyrites Way Project Number: ERA02.004-QM <br /> Gold River,CA 95670 Project Manager: Kasey Jones <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 CH32606-EPA 5030 Water MS <br /> Blank(CH32606-BLK1) Prepared&Analyzed:08/26/03 <br /> Di-isopropyl ether ND 0.50, µg/L <br /> R' Ethyl tert-butyl ether ND 0.50 " <br /> Methyl tert-butyl ether ND 0.50 " <br /> f Tert-amyl methyl ether ND 0,50 " <br /> E Tert-butyl alcohol ND 5.0 " <br /> r Surrogate:Toluene-d8 9.70 10.0 97.0 72-125 <br /> f, LCS(CH32606-BSI) Prepared&Analyzed:08/26/03 <br /> Methyl tert-butyl ether 19.2 0.50 µg/L 20.0 96.0 52.130 <br /> Surrogate:Toluene-d8,, 9.59 10.0 95.9 72-125 <br /> f <br /> =� LCS Dup(CH32606-BSD1) Prepared&Analyzed:08/26/03 t <br /> Methyl tert-butyl ether 19.2 0.50 µg/L 20.0 96.0 52-130 0.00 30 <br /> Surrogate:7oluene-d8 9.70 10.0 97.0 72-125 <br />'[ Batch CH32706-'EPA 5030 Water MS <br /> Blank(CH32706-BLKI) Prepared&Analyzed:08/27/03 <br /> Di-isopropyl ether ND 0.50 µg/L <br /> Ethyl tent-butyl ether ND 0.50 " <br /> Methyl tert-butyl ether ND 0.50 " <br /> Tert-amyl methyl ether: ND 0.50 " <br /> Tert-butyl alcohot ND 5.0 <br /> Surrogate:Toluene-d8! 9.41 10.0 94.1 72-125 <br /> 4 LCS(CH32706-BS1) Prepared&Analyzed:08/27/03 <br /> Methyl tert-butyl ether <br /> 21.0 0.50 µglL 20.0 105 52-130 <br /> E <br />` Surrogate:Toluene-d8 9.75 10,0 97.5 72-125 <br /> f i <br /> I ' <br />{ <br /> CA DOHS FLAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova,CA 95742 www.californialab.com 916-638-7301 Fax: 916-638-4510 <br /> 5 <br />