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I <br /> a CALIFORNIA LABORATORY SERVICES <br /> Page 18 of 20 <br /> � 11/10/05 10:03 <br /> APEX Envirotech Inc.-Gold River Petroleum P <br /> Project: Moore <br /> 11244 Pyrites Way Number: ER core P4 CLS Work Order#:COK0058 <br /> Project <br /> Gold River,CA 95670 Project Manager: Rich Johnson COC#:56131 <br /> Volatile Organic Compounds by EPA Method 8260B -Quality Control. <br /> Reporting Spike Source %REC RPD <br /> FA..lyt7 Result Limit Units Level- Result %REC Limits RPD Limit Notes <br /> Batch 0008359-EPA 5030 Soil MS <br /> I Blank(CO08359-BLKI) Prepared&Analyzed: 11/02/05 <br /> Di-isopropyl ether ND 5.0 gg/kg <br /> Ethyl tert-butyl ether ND 5.0 " <br /> Methyl tert-butyl ether ND 5.0 " <br /> tert-Amyl methyl ether ND 5.0 " <br /> Tert-butyl alcohol ND 50 " <br /> Surrogate:Toluene-d8 47.8 50.0 95.6 60-140 <br /> LCS(CO08359-BS1) Prepared&Analyzed: 11/02/05 <br /> l <br /> Methyl tert-butyl ether 41.1 5.0 pglkg 50.0 82.2 60-140 <br /> i Surrogate:Toluene-d8 48.6 50.0 97.2 60-140 <br /> 1CS Dup(CO08359-BSD]) Prepared&Analyzed: 11/02/05 <br /> Methyl tert-butyl ether 45.7 5.0 pg/kg 50.0 91.4 60-140 10.6 30 <br /> i <br /> Surrogate:Toluene-d8 46.2 50.0 96.4 60-140 <br /> Matrix Spike(CO08359-MS1) Source:COK0058-05 Prepared&Analyzed: 11/02/05 <br /> Methyl tert-butyl ether 48.8 5.0 pg/kg 50.0 ND 97.6 60-140 <br /> Surrogate:Toluene-dS 47.7 50.0 95.4 60-140 <br /> Matrix Spike Dup(CO08359-MSDI) Source:COK0058-05 Prepared&Analyzed: 11/02/05 <br /> Methyl tert-butyl ether 47.6 5.0 pg/kg 50.0 ND 95.2 60-140 2,49 30 <br /> Surrogate:Toluene-d8 47.7 50.0 95.4 60-140 <br /> Batch C008393-EPA 5030 Soil MS <br /> I Blank(CO08393-BLKI) Prepared&Analyzed: 11/03/05 <br /> Di-isopropyl ether ND 5.0 pg/kg <br /> Ethyl tert-butyl ether ND 5.0 " <br /> Methyl tert-butyl ether ND 5.0 " <br /> tert-Amyl methyl ether ND 5.0 " <br /> i Tert-butyl alcohol ND 50 " <br /> I. ' <br /> t Surrogate:Toluene-d8 483 50.0 96.6 60-140 <br /> f <br /> F <br /> f� <br /> I CA DOHS ELAP Accreditation/Registration Number 1233 <br /> e 3249 Fitzgerald Road Rancho Cordova, CA 95742 www.californialab.com 916-638-7301 Fax: 916-638-4510 <br /> i <br />