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CALIFORNIA LABORATORY SERVICES <br /> 06/01/04 16:52 <br /> APEX Envirotech Inc.-Gold River Project: Moore Petroleum <br /> 11244 Pyrites Way Project Number: ERA02.004-QM CLS Work Order#:CN G0712 <br /> Gold River,CA 95670 Project Manager: Rich Johnson COC#: I and 2 <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Reporting Spike Source %REC CCPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch CN04110-EPA 5030 Water MS <br /> Blank(CN041 I O-BLKI) Prepared&Analyzed:05/26/04 <br /> 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 /> tent-Amyl me0tyl ether ND 0.50 <br /> Tert-butyl alcohol ND 5.0 " <br /> 1,2-Dibrornoethane(EDB) ND 0.50 " <br /> 1,2-Dichlaroethane ND 0.50 " <br /> Surrogale:Toluene-d8 9,71 10.0 97,1 72-125 ---.--- <br /> LCS(CN041I0-BSI) - —� ---_ -- Prepared&Analyzed:05/26/04 — <br /> Methyl tert-butyl ether 22.5 0.50 µg/L 20.0112 52-130 <br /> Surrogale:Toluene-dS --- 9.80 10.0 93,0 72-125 <br /> LCS Dup(CN04110_BSD1) - Prepared&Analyzed:05/26/04 <br /> Methyl tett-butyl ether 22.5 0.50 µg/L 20.0 112 52-130 0.00 30 <br /> Surrogale:Toluene-d8 -- - ---- -- 9.70T- ------ - - - - 10.0 97.0 72-125 --- <br /> Batch CN04126-EPA 5030 Water MS <br /> Blank(CN04126-BLKI) – Prepared&Analyzed:QS/26/04 <br /> Di-isopropyl ether ND 0.50 µg/L <br /> Ethyl tert-butyl ether ND 0.50 " <br /> Methyl tert-buty[ether ND 0.50 " <br /> tert-Amyl methyl ether ND 0.50 " <br /> Tert-butyl alcohol ND 5.0 " <br /> 1,2-Dibromoethane(EDB) ND 0.50 <br /> 1,2-Dichlomethane ND 0.50 " <br /> Surrogate:Toluene-d8 9.83 10.0 - -98.3- - 72-125- --- ---- <br /> i <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova,CA 95742 www.californialab.cont 916-638-7301 Fax: 916-633-4510 <br />