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CALIFORNIA LABORATORY SERVICES <br /> 07/28/10 13:18 <br /> AECOM,Inc.Ila AECOM Environment Project: Stockton Scavenger, 1240 Navy Drive,Stockton,CA <br /> 10461 Old Placerville Rd.,Suite 170 Project Number: 60157454.3 CLS Work Order#: CTG0988 <br /> Sacramento CA,95827-2508 Project Manager: Chris Drabandt COC#: <br /> r 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 /> i <br /> Batch CT05453-EPA 5030 Soil MS <br /> Blank(CT05453-BLKI) Prepared&Analyzed:07/27/10 <br /> Benzene ND 5.0 pg/kg <br /> Ethylbenzene ND 5.0 " <br /> Toluene ND 5.0 " <br /> Xylenes(total) ND 10 <br /> Surrogate:Toluene-d8 27.0 30.0 90 60-140 <br /> LCS(CT05453-BSI) Prepared&Analyzed: 07/27/10 <br /> Methyl tert butyl ether 22.3 5.0 pg/kg 20.0 111 60-140 <br /> Surrogate: Toluene-d8 31.7 30.0 106 60-140 <br /> 1 LCS Dup(CT05453-BSD1) Prepared&Analyzed: 07/27/10. <br /> 1 Methyl tert butyl ether 24.0 5.0 pg/kg 20.0 120 60-140 7 30 <br /> I <br /> Surrogate: Toluene-d8 31.4 30.0 105 60-140 <br /> Matrix Spike(CT05453-MS1) Source:CTG0988-06 Prepared&Analyzed:07/27/10 <br /> Methyl tert-butyl ether 17.6 5.0 pg/kg 20.0 ND 88 60-140 <br /> Surrogate:Toluene-d8 31.4 36.0 105 60-140 <br /> Matrix Spike Dup(CT05453-MSD1) Source:CTG0988-06 Prepared&Analyzed:07/27/10 <br /> Methyl tert-butyl ether 16.2 5.0 µg/kg 20.0 ND 81 60-140 8 30 <br /> Surrogate:Toluene-d8 31.6 30.0 105 60-140 <br /> I <br /> iL <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> 916-638-7301 Fax: 916-638-4510 <br /> 3249 Fitzgerald Road Rancho Cordova, CA 95742 WWW.californialab,com <br />