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L <br /> F <br /> CALIFORNIA LABORATORY SERVICES i <br /> i <br /> 12/20/04 12:29 <br /> APEX Envirotech Inc. Gold River Project: Moore Petroleum <br /> 11244 Pyrites Way CLS Work Order#:CNL0427 <br /> Y Y Project Number: ERA02.004 <br /> Gold River,CA 95670 Project Manager: Rich Johnson COC#:57770 <br /> j Volatile Organic Compounds by EPA Method 8260B- Quality Control <br /> t Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC limits RPD Limit Notes <br /> Batch CN09556-EPA 5030 Water MS <br /> a <br /> Blank(CN09556-BLKI) Prepared&Analyzed: 12/13/04 <br /> Di-isopropyl ether ND 0.50 µglL <br /> Ethyl tert-butyl ether ND 0.50 <br /> Methyl tert-butyl ether ND 0.50 <br /> l tert-Amyl methyl ether ND 0.50 " <br />' Tert-butyl alcohol ND 5.0 " <br /> Surrogate:Toluene-d8 8.67 10,0 86.7 71-125 <br /> LCS(CN09556-BSI) Prepared&Analyzed: 12/13/04 <br /> Methyl tert-butyl ether 17.0 0.50 µglL 20.0 65:0 52-130 <br /> Surrogate:Toluene-d8 8.54 10.0 8514 71-125 a <br /> LCS Dup(CN09556-BSDJ) Prepared&Analyzed: 12/13/04 .# <br /> Methyl tert-butyl ether 17.2 0.50 µg/L 20.0 S6i0 52-130 1,17 30 <br /> Surrogate:Toluene-d8 9.43 10.0 943 72-115 <br /> I. Batch CN09640-EPA 5030 Water MS <br /> Blank(CN09640-BLKI) Prepared&Analyzed: 12/15/04 <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 I! <br /> tert-Amyl methyl ether ND 0.50 " <br /> Tert-butyl alcohol ND 5.0 " <br /> Surrogate:Toluene-d8 9.87 10.0 98.7 72.125 <br /> LCS(CN09640-BSI) Prepared&Analyzed: 12/15/04 <br /> Methyl tert-butyl ether 22.9 0.50 gg/L 20.0 114 52-130 <br /> Surrogate:Toluene-d8. 11.1 " 10.0 112 71-115 <br /> � M <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 />