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. r <br /> CALIFORNIA LABORATORY SER <br /> f VICES <br /> 11/17/03 12:57 <br /> APEX Envirotech Inc.-Gold River Project: Moore Petroleum <br /> 11244 Pyrites Way Project Number: ERA02.004-QM CLS Work Order#:CMKO205 <br /> Gold River,CA 95670 Project Manager: Rich Johnson <br /> I <br /> Volatile Organic Compounds by EPA Method 8260B- Quality Control <br /> 1 <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> r _ <br /> Batch CK31112-EPA 5030 Water MS <br /> E Blank(CK31I I2-BLKI) Prepared&Analyzed: 11/11103 <br /> Di-isopropyl ether ND 0.50 µfill <br /> Ethyl tert-butyl ether ND 0.50 <br /> Methyl tert-butyl ether ND 0.50 " <br /> Tert-amyl methyl ether ND 0.50 <br /> Tert-butyl alcohol ND 5.0 <br /> Surrogate;Toluene-d8 9.97 10.0 99.7 72-125 <br /> LCS(CK311I2-BSI) Prepared&Analyzed: 11/11/03 <br /> Methyl tert-butyl ether 22.0 0.50 'pg/L 20.0 Ito 52-130 <br /> Surrogate:Toluene-& 10.7 10.0 107 72-125 p <br /> C� <br /> LCS Dup(CK31112-BSDi) Prepared&Analyzed: 11/11/03 4 <br /> Methyl tert-butyl ether 21.8 0.50 pg/L 20.0 109 52-130 0.913 30 <br /> f Surrogale:Toluene-d8 10,9 10.0- 109 72-115 <br /> E <br /> f <br /> C <br /> d Ik} <br /> " I{I <br /> ' r <br /> 1 <br /> k <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> I <br /> 3249 Fitzgerald Road Rancho Cordova,CA 95742 www.californialab.com 916-638-7301 Fax: 916-638-4510' <br /> a <br /> - t <br /> k <br />